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HELMUT DUDDECK PUBLIKATIONSLISTE

(Stand: 11. August 2012) 1. Carbon-13 Nuclear Magnetic Resonance Spectra I - Monosubstituted Adamantanes and Adamantanones H. Duddeck, Org. Magn. Reson.7, 151 (1975). 2. Lanthanide Induced Shifts on the Carbon-13 Chemical Shifts of 2-Adamantanol and 2-Adamantanethiol H. Duddeck and W. Dietrich, Tetrahedron Lett. 2925 (1975). 3. Carbon-13 Nuclear Magnetic Resonance Spectra III - 2-Heteroadamantanes H. Duddeck and P. Wolff, Org. Magn. Reson. 8, 593 (1976). 4. Carbon-13 NMR Spectrum of a New Hydrocarbon Containing Atoms with "Inverted" Tetrahedral Geometry H. Duddeck and H. Klein, Tetrahedron Lett. 1917 (1976). 5. Synthese und Untersuchungen des cis- und trans-Hexahydrorutaecarpins G. Tóth, K. Horváth-Dóra, O. Clauder and H. Duddeck, Liebigs Ann. Chem. 529 (1977). 6. Carbon-13 Nuclear Magnetic Resonance Spectra V - Substituent Interactions at 4-Substituted Adamantanones

and Bicyclo[2.2.2]octanones H. Duddeck and P. Wolff, Org. Magn. Reson. 9, 528 (1977). 7. Carbon-13 Nuclear Magnetic Resonance Spectra VI - Stereochemical Dependence of γ-anti Hetero-substitu-

ent Effects on 13

C Chemical Shifts of Bridgehead Substituted Molecules H. Duddeck and H. Klein, Tetrahedron 33, 1971 (1977). 8. Carbon-13 Nuclear Magnetic Resonance Spectra VII - Through-Bond Interactions and Hyperconjugative Substituent Effects at 2,4-Disubstituted Adamantanes H. Duddeck, Tetrahedron 34, 247 (1978). 9. Carbon-13 Nuclear Magnetic Resonance Spectra VIII - 18α- and 18β-Glycyrrhetic Acid Derivatives H. Duddeck, M.H.A. Elgamal, G. Severini-Ricca, B. Danieli and G. Palmisano, Org. Magn. Reson. 11, 130

(1978). 10. Carbon-13 NMR Spectra of Some Pentacyclic Triterpenoids with the Olean-12-ene and 18-β-Olean-12-ene Skeleton G. Severini-Ricca, B. Danieli, G. Palmisano, H. Duddeck and M.H.A. Elgamal, Org. Magn. Reson. 11, 163

(1978). 11. Regioselective Functionalisation of Triamantane F. Hollowood, A. Karim, M. A. McKervey, P. McSweeney and H. Duddeck, J. Chem. Soc., Chem. Commun.

306 (1978). 12. Stereochemische Untersuchungen der 4-Benzyliden-1,2,3,4-tetrahydro-3-isochinolinone und ihrer hydrierten

Derivate G. Tóth, L. Hazai, Gy. Déak and H. Duddeck, Liebigs Ann. Chem. 1978, 1103. 13. Optishift Pmr Spectroscopic Studies on some Quinoxaline Amino Esters and Dipeptides M. M. El-Abadelah, S. S. Sabri, H. D. Tabba' and H. Duddeck, J. Heterocycl. Chem. 14, 871 (1977). 14. 13C NMR and CD of Some 3,8''-Biflavanoids from Garcinia species and of Related Flavanones H. Duddeck, G. Snatzke and S. S. Yemul, Phytochem. 17, 1369 (1978). 15. A Novel Carbonium Ion Rearrangement During Cerium Ion Oxidation of a Strained Polycyclic System G. Mehta, V. Singh and H. Duddeck, Tetrahedron Lett. 1223 (1978).

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16. An Unusual Bridgehead Substitution in a Polycyclic System G. Mehta, B. Chaudhuri and H. Duddeck, Tetrahedron Lett. 1603 (1978). 17. 13C Nuclear Magnetic Resonance Spectra. Part 9. Strain Effects on 13C Chemical Shifts of Triamantane M.-L. Dheu, D. Gagnaire, H. Duddeck, F. Hollowood and M.A. McKervey, J. Chem. Soc., Perkin Trans. II

357 (1979). 18. 13C Nuclear Magnetic Resonance Spectra. Part 10. Substituent Effects on the 13C Chemical Shifts of

Adamantanes, Diamantanes and Triamantanes H. Duddeck, F. Hollowood, A. Karim and M. A. McKervey, J. Chem. Soc., Perkin Trans. II 360 (1979). 19. 13C NMR Chemical Shifts and Carbon-Proton Coupling Constants of Some Furocoumarins and

Furochromones M. H. A. Elgamal, N. H. Elewa, E. A. M. Elkhrisy and H. Duddeck, Phytochemistry 18, 139 (1979). 20. 13C NMR Spectroscopy as a Tool for Structural Elucidation of Furocoumarins and Furochromones M. H. A. Elgamal, N. H. Elewa, E. A. M. Elkhrisy and H. Duddeck, Proc. 11th Int.. Symp. Chem. Nat. Prod.

2, 271 (1978). 21. Zur Struktur des Antibiotikums Moenomycin A F.-J. Witteler, P. Welzel, H. Duddeck, G. Höfle, W. Riemer and H. Budzikiewicz, Tetrahedron Lett. 3492

(1979). 22. Rearrangements and Unusual Reductions with Sodium Hydride and Methyl Iodide H. Duddeck, H.T. Feuerhelm and G. Snatzke, Tetrahedron Lett. 829 (1979). 23. Dipolar Relaxation Times and Signal Assignments in 13C NMR Spectra of 2-Substituted Adamantane R. Gerhards, W. Dietrich, G. Bergmann and H. Duddeck, J. Magn. Reson. 36, 189 (1979). 24. Carbon-13 Nuclear Magnetic Resonance Spectra - XII. Through-Bond and Through-Space Interactions of

Substituents in β-Substituted Ketones and Related Compounds H. Duddeck and H.-T. Feuerhelm, Tetrahedron 36, 3009 (1980). 25. Revelation of Pentacyclo[6.2.1.02,7.04,10.05,9]undecane <==> Oxa-Bird Cage Equilibrium by 13C NMR

Spectroscopy: Fragmentation of Caged Polycyclic Systems with Lead Tetraacetate G. Mehta, V. Singh, P. N. Pandey, B. Chaudhuri and H. Duddeck, Chem. Lett. 59 (1980). 26. A Novel Assigning Method in the 13C NMR Spectroscopy of Coumarins and Furocoumarins H. Duddeck, M.H.A. Elgamal, F.K. Abd Elhady and N.M.M. Shalaby, Org. Magn. Reson. 14, 256 (1980). 27. Steroidal Sapogenins: Part XVI - Carbon-13 Nuclear Magnetic Resonance of Some Natural and Synthetic

Steroidal Sapogenins M. H. A. Elgamal, M. S. Bedour and H. Duddeck, Ind. J. Chem. 19B, 549 (1980). 28. Moenomycin A: Spaltung des Antibiotikums mit Trifluoressigsäure/2-Propanol und Bestimmung der Ver-

knüpfung von D-Glucose und 2-Acetamido-2-desoxy-D-glucose P. Welzel, G. Knupp, F.-J. Witteler, Th. Schubert, H. Duddeck, D. Müller and G. Höfle, Tetrahedron 37, 97

(1981). 29. 14β-Hydroxysterole, II. Zur Prins-Reaktion von Lumihecogeninacetat P. Welzel, B. Janssen and H. Duddeck, Liebigs Ann. Chem. 1981, 546. 30. Carbon-13 Nuclear Magnetic Resonance Spectra - XIV. Carbon-Fluorine Coupling Constants as Probes for

Intramolecular Substituent Interaction H. Duddeck and M.R. Islam, Tetrahedron 37, 1193 (1981). 31. Carbon-13 Nuclear Magnetic Resonance Spectra - XV. The γ-anti Substituent Effect and its Dependence on

Substitution at the α- and γ-Carbon Atom H. Duddeck and M.R. Islam, Org. Magn. Reson. 16, 32 (1981).

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32. Carbon-13 Nuclear Magnetic Resonance Spectra - XVI. Lanthanide Induced Signal Shifts of Diastereotopic 13C Nuclei as a Probe for a Conformational Equilibrium

H. Duddeck and V. Wiskamp, Org. Magn. Reson. 15, 361 (1981). 33. Chemie der 8-Azasteroide, V. 1H- und 13C-NMR-spektroskopische Untersuchungen G. Tóth, A. Vedres, H. Duddeck and Cs. Szántay, Acta Chim. Sci. Hung. 109, 149 (1982). 34. Rearrangements of Oxahomoadamantane Derivatives in Acidic Media H. Duddeck, V. Wiskamp and D. Rosenbaum, J. Org. Chem. 46, 5332 (1981). 35. Oxazepines and Thiazepines - XIII. Conformational Analysis of 2,3-Dihydrobenzothiazepine Derivatives G. Tóth, A. Szöllösy, A. Lévai and H. Duddeck, Org. Magn. Reson. 20, 133 (1982). 36. 13C NMR Spectroscopy of Coumarin Derivatives (Übersichtsartikel) H. Duddeck and M. Kaiser, Org. Magn. Reson. 20, 55 (1982). 37. Regioselektivität der Baeyer-Villiger-Oxidation substituierter Adamantanone H. Duddeck and M. Kaiser, Z. Naturforsch.37b, 1672 (1982). 38. Konformationsanalyse und 13C-NMR-Untersuchungen einiger 1,4- Benzoxazepin-Derivate H. Duddeck and A. Lévai, Arch. Pharm. 316, 100 (1983). 39. Steric Repulsion and Intramolecular Interaction of Substituents in 4-Substituted Adamantan-2,6-diones H. Duddeck, Tetrahedron 39, 1365 (1983). 40. Differentiation of Diastereomeric Bornane Derivatives by 13C NMR Spectroscopy H. Duddeck, B. Blagoev, N.D. Berova and V. Vassilev, Org. Magn. Reson. 21, 122 (1983). 41. 2H and 13C NMR Spectra of Deuterated Adamantan-2-ols H. Duddeck and M.R. Islam, Org. Magn. Reson. 21, 140 (1983). 42. The Sesquiterpene Lactones from Two Populations of Artemisia Herba Alba R. Segal, I. Feuerstein, H. Duddeck, M. Kaiser and A. Danin, Phytochemistry 22, 129 (1983). 43. Reactions of 2-anti-Hydroxy-4-aza-5-homoadamantan-5-one H. Duddeck and D. Brosch, J. Org. Chem. 48, 3569 (1983). 44. Moenomycin A: Further Structural Studies and Preparation of Simple Derivatives P. Welzel, B. Wietfeld, F. Kunisch, Th. Schubert, K. Hobert, H. Duddeck, D. Müller, G. Huber, J. E. Maggio

and D. H. Williams, Tetrahedron 39, 1583 (1983). 45. Electronegativity and Linear Electric Field Effects on γ-anti 13C Chemical Shifts H. Duddeck and M. R. Islam, Org. Magn. Reson. 21, 727 (1983). 46. Synthese und 13C-NMR-spektrokopische Untersuchungen von (Trimethylsilyl)adamantan-Derivaten H. Duddeck and M. R. Islam, Chem. Ber. 117, 554 (1984). 47. Synthese von (Trimethylstannyl)adamantan-Derivaten H. Duddeck and M. R. Islam, Chem. Ber. 117, 565 (1984). 48. Benzotiazepinek szintézise és konformációs analíse G. Tóth, A. Szöllösy, A. Lévai and H. Duddeck, Magyar Kémiai Folyóirat 89, 274 (1983). 49. Detection of Intramolecular Substituent Interaction in Aliphatic Molecules by 13C NMR Spectroscopy H. Duddeck, Bull. Magn. Reson. 5, 230 (1983).

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50. Long-Acting Contraceptive Agents: Aliphatic and Alicyclic Carboxylic Esters of Levonorgestrel A. Shafiee, M. Vossoghi, F. Savabi, T.G. Watson, K. Schubert, K. Ponsold, W. Werner, H. Wagner, R.

Vlahov, V. Tarpanov, M. Boshkova-Ljapova, B. Milenkov, V. Stoilova, G. Snatzke and H. Duddeck, Steroids 41, 349 (1983).

51. Stepwise Degradation of Moenomycin A P. Welzel, F. Kunisch, F. Kruggel, H. Stein, A. Ponty and H. Duddeck, Carbohydr. Res. 126, C1 (1984). 52. Syntheses and 13C NMR Spectra of Fluorinated Adamantane Derivatives H. Duddeck and M. R. Islam, J. Fluorine Chem. 25, 371 (1984). 53. Oxazepines and Thiazepines, Part 15. Synthesis of 2,3-Dihydro-1,5-benzothiazepin-4(5H)-one Derivatives A. Lévai and H. Duddeck, Pharmazie 38, 827 (1983). 54. Synthesis of Galanthamine: Intramolecular Para-Ortho-Coupling of Diaryl Ethers by Anodic Oxidation D. Krikorian, R. Vlahov, S. Parushev, M. Chinova, J. Vlahov, H.-J. Schäfer, H. Duddeck and G. Snatzke, Tetrahedron Lett. 2969 (1984). 55. 13C and 31P NMR Spectra of 1-Adamantylphosphoryl Derivatives H. Duddeck and A.G. Hanna, Magn. Reson. Chem. 23, 41 (1985). 56. Sesquiterpene Lactones from a Further Population of Artemisia Herba Alba R. Segal, L. Eden, A. Danin, M. Kaiser and H. Duddeck, Phytochem. 23, 2954 (1984). 57. Synthese und 13C-NMR-spektroskopische Untersuchungen von brückenkopf-substituierten endo-Bicyclo[3.3.1]nonan-3-olen und Oxaadamantanen H. Duddeck and P. Wagner, Liebigs Ann. Chem.1984, 1981. 58. Intramolekuláris Szubsztituens Kölcsönhatások Vizsgálata 13C-NMR Spektroszkópiával (Übersetzung: G.

Tóth) H. Duddeck, Kém. Közlem. 59, 265 (1983). 59. New Approaches to the Total Synthesis of Galanthamine R. Vlahov, D. Krikorian, G. Spassov, M. Chinova, S. Parushev, M. Zagorova, V. Tarpanov, J. Vlahov, G.

Snatzke, H. Duddeck, H.-J. Schäfer and K. Kieslich, Chemistry and Biotechnology of Biologically Active Natural Products(Cs. Szántay, A. Gottsegen and G. Kovács, Eds.), Akadémiai Kiádo (Budapest), p. 251 (1984).

60. Cardiotonic Steroids. Part 7. Synthesis of 17β-pyridylandrostane Derivatives J. Wicha and H. Duddeck, Bull. Pol. Acad. Sci., Chem. 32, 75 (1984). 61. Sesquiterpene Lactones from Artemisia Herba Alba. Part IV. R. Segal, L. Eden, A. Danin, M. Kaiser and H. Duddeck, Phytochem. 24, 1381 (1985). 62. Synthesen und 13C-NMR-spektroskopische Untersuchungen trifluormethylsubstituierter Adamantane H. Duddeck, M. Spitzer and G. Bolte, Liebigs Ann. Chem. 1985, 545. 63. 17O NMR Spectra of 1-Adamantylphosphoryl Derivatives H. Duddeck and A.G. Hanna, Magn. Reson. Chem. 23, 533 (1985). 64. Structural Assignment of the Isomeric 2- and 4-endo- Iodobicyclo[3.3.1]non-6-ene-3-endo-carbonitrils by

Two-Dimensional 1H and 13C NMR Spectroscopy H. Duddeck, M. Kaiser and D. Brosch. Magn. Reson. Chem. 23, 548 (1985). 65. Oxazepine und Thiazepine, XVI - 1H- und 13C-NMR-Untersuchungen zur Struktur von Benzothiazepinon-

Derivaten H. Duddeck, M. Kaiser and A. Lévai, Liebigs Ann. Chem. 1985, 869.

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66. Dynamic 77Se NMR of Phenylselenyl Cyclohexane Derivatives H. Duddeck, P. Wagner and S. Gegner, Tetrahedron Lett. 1205 (1985). 67. 13C NMR and Conformational Analysis of Some 1,4-Dithiepane Spiranes B. Rys and H. Duddeck, Tetrahedron 41, 889 (1985). 68. NMR-Spektroskopische Untersuchung von Isocumarin- und Isocarbostyril-Derivaten H. Duddeck and M. Kaiser, Spectrochim. Acta 41A, 913 (1985). 69. Schmidt-Reaction of 4-Substituted Adamantanones H. Duddeck and D. Brosch, Tetrahedron 41, 3753 (1985). 70. Isomeric Diadamantylphosphinic Acid Derivatives H. Duddeck, M. Kaiser and A.G. Hanna, Tetrahedron 41, 3763 (1985). 71. Rearrangement of Oxahomoadamantane Derivatives in Acidic Media. 2. H. Duddeck and D. Brosch, J. Org. Chem. 50, 5401 (1985). 72. Separation of Isomeric Halogenobicyclononene Carbonitriles J. Kris, M. Brezina, D. Brosch, L. Vodicka and H. Duddeck, J. Chromatogr. 347, 297 (1985). 73. Conformation of 1,2:3,4-Di-O-isopropylidene-a-D-galactopyranose revisited S. Jarosz, J.W. Krajewski, A. Zamojski, H. Duddeck and M. Kaiser, Bull. Pol. Acad. Sci. Chem. 33, 181

(1985). 74. Sequence of δ-Carbon Signals in 2-Substituted Adamantanes Determined by Two-Dimensional Correlated

NMR Spectroscopy H. Duddeck, M. Kaiser and D. Rosenbaum, Tetrahedron Lett. 27, 473 (1986). 75. Substituent Effects on 13C Chemical Shifts in Aliphatic Molecular Systems. Dependence on Constitution and

Stereochemistry (Übersichtsartikel) H. Duddeck, Top. Stereochem.(E. L. Eliel, S. H. Wilen and N. L. Allinger, Eds.) Vol. 16, 219 (1986). 76. Synthesis and Mass Spectra of Adamantylphosphoryl Derivatives H. Duddeck, M.H.A. Elgamal and A.G. Hanna, Phosphorus and Sulfur 28, 307 (1986). 77. 1H, 13C, 17O and 33S NMR Investigation of Some Cyclohexyl Phenyl Sulfides, Sulfoxides and Sulfones H. Duddeck, U. Korek and D. Rosenbaum, Magn. Reson. Chem. 24, 792 (1986). 78. Synthesis of the Tetrasaccharide Repeating-Unit of the Lipopolysaccharide Isolated from Pseudomonas

maltophilia A. Lipták, L. Szabó, J. Kerékgyártó, J. Hárangi, P. Nánási and H. Duddeck, Carbohydr. Res. 150, 187

(1986). 79. Carbon-13 NMR Studies of Some Quinoxaline Amino Esters and Their N-Oxides S. S. Sabri, M. M. El-Abadelah, H. I. Tashtoush and H. Duddeck, Heterocycles 24, 3169 (1986). 80. Synthesis and NMR Spectroscopic Investigation of Phenylphosphoryl Derivatives H. Duddeck and R. Lecht, Phosphorus and Sulfur 29, 169 (1987). 81. Highfield 1H and 13C NMR Spectroscopy of Some Corticosteroids and Related Compounds H. Duddeck, D. Rosenbaum, M. H. A. Elgamal and B. E. Fayez, Magn. Reson. Chem. 24, 999 (1986). 82. Aldose-Aminoguanidine Condensation Products: Syntheses and N.M.R. Studies L. Szilágyi, Z. Györgydeák and H. Duddeck, Carbohydr. Res.158, 67 (1986). 83. Moenomycin A: Minimum Structural Requirements for Biological Activity P. Welzel, F. Kunisch, F. Kruggel, H. Stein, J. Scherkenbeck, A. Hiltmann, H. Duddeck, D. Müller, J. E.

Maggio, H.-W. Fehlhaber, G. Seibert, Y. van Heijenoort and J. van Heijenoort, Tetrahedron 43, 585 (1987).

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84. Natural Abundance 17O NMR Spectra of Coumarins, Furocoumarins and Related Compounds H. Duddeck, D. Rosenbaum, M. H. A. Elgamal and N. M. M. Shalaby, Magn. Reson. Chem. 25, 489 (1987). 85. Die 17O-Kernresonanzspektroskopie auf dem Weg zur Routinemethode Chemiedozententagung: wiss. Programm u. Vortragsreferate (hrsg. Fachbereich Chemie der Universität

Göttingen), Göttingen: Selbstverlag, 1987. 86. Synthesis of Some Furochromonesulfonamide Derivatives with Potential Pharmacological Activity M. H. A. Elgamal, N. M. M. Shalaby, H.Duddeck und D. Rosenbaum, J. Heterocycl. Chem. 24, 721 (1987). 87. A New Route to Cyclic Ureas of Sugars via Phosphinimines J. Kovács, I. Pintér, A. Messmer, G. Tóth and H. Duddeck, Carbohydr. Res. 166, 101 (1987). 88. Macrocyclic Pyrrolizidine Alkaloids of Crotolaria Rosenii B. Abegaz, G. Atnafu, H. Duddeck and G. Snatzke, Tetrahedron 43, 3263 (1987). 89. NMR Spectra and Stereochemistry of 2,3,4,5-Tetrasubstituted Pyrrolidines B. Mikhova, S. L. Spassov, K. Popandova, V. Dryanska, C. Ivanov, H. Duddeck and M. Kaiser, J. Mol.

Struct. 161, 231 (1987). 90. Highfield 1H and 13C NMR of 5-Oxygenated Cholestane-6-oxime Derivatives H.Duddeck, J. Frelek, W.J. Szczepek and W. J. Rodewald, Bull. Chem. Soc. Ethiop. 1, 18 (1987). 91. Isoflavanoids from Taverniera abyssinica H. Duddeck, A. Yenesew and E. Dagne, Bull. Chem. Soc. Ethiop.1, 36 (1987). 92. Der Mechanismus von Substitutionsreaktionen an [LRe(NO)(CO)(CH

3)]

+ in saurer Lösung und die Struktur

von [LRe(NO)(CO)2(µ-CH2OCH2)] I2 (L = 1,4,7-Triazacyclononan)

Ch. Pomp, H. Duddeck, K. Wieghardt, B. Nuber and J. Weiss, Angew. Chem. 99, 927 (1987). 93. A Mainly 13C Nuclear Magnetic Resonance Investigation of Some Indolo[2,3-a]quinolizinium Salts Cs. Szántay, Jr., G. Tóth, E. Márványos, Gy. Thaler and H. Duddeck, J. Chem. Soc., Perkin Trans. II 537

(1988). 94. The Sesquiterpene Lactones from Achillea fragrantissima, I. Achillolide A and B, Two Novel

Germacranolides R. Segal, A. Dor, H. Duddeck, G. Snatzke, D. Rosenbaum and M. Kajtár, Tetrahedron 43, 4125 (1987). 95. CAS-Online, eine Datenbasis für Chemiker H. Duddeck, Bibliothekszeitung der Ruhr-Universität Bochum 10, 8 (1987). 96. Crystal and Molecular Structure of Ambrosin and Damsin, Sesquiterpene Lactone Isolates of Ambrosia Maritima L. G. M. Iskander, B. M. Modawi, H. E. Ahmed, E. O. Schlemper and H. Duddeck, J. prakt. Chem. 330, 182

(1988). 97. Strukturaufklärung mit moderner NMR-Spektroskopie - ein Übungsbuch H. Duddeck and W. Dietrich, Steinkopff-Verlag, Darmstadt, 1988. 98. Bianthraquinones and a Spermidine Alkaloid from Cassia floribunda G. Alemayehu, B. Abegaz, G. Snatzke and H. Duddeck, Phytochemistry 27, 325 (1988). 99. Literaturrecherche in Datenbanken - nicht nur etwas für Spezialisten H. Duddeck, Mitteilungen des Hochschulverbandes 36 (5), 255 (1988). 100. Transannular Interactions in Difunctional Medium Rings, Part 3. 13C and 17O Nuclear Magnetic Resonance Studies on Cyclic Amino Ketones G. Spanka, P. Rademacher and H. Duddeck, J. Chem. Soc., Perkin II 2119 (1988).

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101. Synthesis of the Tetrasaccharide Core Region of Antogenic Lipo-Oligosaccharides of Mycobacterium

kansasii A. Lipták, J. Kerékgyártó, Z. Szurmai and H. Duddeck, Carbohydr. Res.175, 241 (1988). 102. Total Synthesis of rac- 9,11-Dehydrodigitoxigenin-3-tetrahydropyranyl ether A. R. Daniewski, M. M. Kabat, M. Masnyk, J. Wicha, W. Wojciechowska and H. Duddeck, J. Org. Chem.

53, 4855 (1988). 103. Hydrogenation of 3(2H)-Isoquinolines and the Stereochemistry of the Products G. Tóth, L. Hazai, G. Deák, H. Duddeck, H. Kühne and M. Hricovini, Tetrahedron 44, 6861 (1988). 104. Biomimetic Transformation of Hodgkinsine, a Pyrrolidinoindoline Alkaloid F. Libot, N. Kunesch, J. Poisson, M. Kaiser and H. Duddeck, Heterocycl. 27, 2381 (1988). 105. Rhodium(II)-Catalysed Cyclisation of Diazoketones Derived from Biphenyl. A New Route to Benz[a]azu-

lenes and Related Systems H. Duddeck, M. Kennedy, M. A. McKervey and F. Twohig, J. Chem. Soc., Chem. Commun.1586 (1988). 106. Natural Abundance 17O NMR Spectra of Chromanones, Chromones, Flavanones and Flavones H. Duddeck, J. Cs. Jászberényi, T. Timár, A. Lévai and M. H. A. Elgamal, Magn. Reson. Chem. 27, 170

(1989). 107. Prunetin-5-O-β-D-glucopyranoside, a Novel Isoflavone from the Peduncle of Prunus avium and P. cerasus S. A. Khalid, M. Gellért, K. Szendrei and H. Duddeck, Phytochemistry 28, 1560 (1989). 108. Complete 1H and 13C NMR Ab Initio Assignment of Two α-Iso-sparteine Salts by the Use of Two-

Dimensional NMR Spectroscopy M. F. Simeonov, St. L. Spassov, H. Duddeck, U. Majchrzak-Kuczynska and J. Skolik, Magn. Reson. Chem.

27, 476 (1989). 109. Quinones of Senna Didymobotrya G. Alemayehu, B. Abegaz, G. Snatzke and H. Duddeck, Bull.Chem. Soc. Ethiop. 3, 37 (1989). 110. NMR Spectra and Conformational Analysis of Substituted 1,3,4,5-Tetrahydro-2H-1,5-benzodiazepin-2-one Derivatives F. Malik, M. Hassan, D. Rosenbaum and H. Duddeck, Magn. Reson. Chem. 27, 391 (1989). 111. Structure Elucidation by Modern NMR - A Workbook H. Duddeck and W. Dietrich, Springer-Steinkopff, New York, Darmstadt, 1989. 112. Isolation and Characterization of the Antimalarial Agent of the Neem tree Azaridachta indica A. Juss. S. A. Khalid and H. Duddeck, J. Nat. Prod. 52, 922 (1989). 113. (+)-Catechin-5-galloyl Ester, a Novel Natural Polyphenol from the Bark of Acacia nilotica of Sudanese

Origin S. A. Khalid, S. M. Yagi, P. Khristova and H. Duddeck, Planta Med. 55, 556 (1989). 114. Interpretation of Two-Dimensional NMR Spectra, A Pedagogical Approach (Übersichtsartikel) M. Gonzalez-Sierra, S. A. Khalid and H. Duddeck, Fitoterapia 60, 99 (1989). 115. A Further Contribution to the γ-Pyrone Constituents of Ammi visnaga L. Fruits E. A. Abou-Mustafa, N. A. M. Saleh, H. Duddeck, M. H. A Elgamal and N. M. M. Shalaby, Planta Medica

56, 134 (1990). 116. CD of the E/Z Pairs of Some 6-Hydroximinosteroids H. Duddeck, J. Frelek, G. Snatzke and W. J. Szczepek, Proc. FECS Third Internat. Conf. Circular Dichroism,Prag, 1989.

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117. Conformational Study of Some Amino Acid Conjugates of Indol-3-yl-acetic Acid (IAA) by 1H-NMR-NOE-Difference Spectroscopy. Structure/Auxin Activity Relationships

H. Duddeck, M. Hiegemann, M. F. Simeonov, B. Kojic-Prodic, B. Nigovic and V. Magnus, Z. Naturforsch. 44c, 543 (1989).

118. Unusual Behavior of 2,2-Dimethyl-2H-chromene Derivatives (Precocenes) in Phenylselenenylation P. Wagner, H. Duddeck, T. Tímár, É. Csuhai and J. Cs. Jászberényi, J. Chem. Soc., Perkin I 1989, 2128. 119. Synthesis and Spectroscopic Properties of Stereoisomeric 5,7-Oxido-6-hydroximinocholestane Derivative H. Duddeck, J. Frelek, D. Horvatic, B. Kojic-Prodic, G. Snatzke, W. J. Szczepek and P. Wagner, J. Phys.

Org. Chem. 3, 404 (1990). 120. 1H NMR Spectral Nonequivalence of Sulphoxide Enantiomers in the Presence of 2,2'-Dihydroxy-1,1'-

binaphthyl J. Drabowicz and H. Duddeck, Sulfur Lett. 10, 37 (1989). 121. NMR of Chalcogen Nuclei and Their Application in Natural Products Chemistry H. Duddeck, in Studies in Natural Products Chemistry, Vol. 9, S. 109, Atta-ur-Rahman (Ed.), Elsevier,

Amsterdam, 1991. 122. Synthesis and Spectroscopic Study of Some Varied Visnagin Sulfonamide Derivatives M. H. A. Elgamal, N. M. M. Shalaby and H. Duddeck, Bull. Nat. Res. Centre (Egypt) 14, 201 (1989). 123. Neo-Clerodane Diterpenoids from Ajuga Chamaepitys Var. Chia I. M. Boneva, B. P. Mikhova, P. Y. Malakov, G. Y. Papanov, H. Duddeck and St.L. Spassov, Phytochemistry

29, 2931 (1990). 124. 77Se and15N NMR Investigation of Some 1,2,3-Selenadiazole Derivatives H. Duddeck, P. Wagner, D. Müller and J. Cz. Jászbérenyi, Magn. Reson. Chem. 28, 549 (1990). 125. A Further Contribution to the Triterpenoid Constituents of Glycyrrhiza glabra G. H. Mahran, H. Duddeck, M. H. A. Elgamal, A. G. Hanna and F. K. Abdel-Hady, Proc. 37th Ann. Con-

gress Med. Plant Res.,Thieme Verlag Stuttgart, 1989. 126. Isolation of Lanosta-9(11),24-dien-3ß-yl acetate from Leuzia carthamoides S. A. Khalid, E. Varga, K. Szendrei and H. Duddeck, J. Nat. Prod. 52, 1136 (1989). 127. Conformation of 2-C:1-N-Carbonyl-2-deoxy-α-D-glycopyranosylamines M. Chmielewski, Z. Kaluza, H. Dodziuk, K. Suwinska, D. Rosenbaum, H. Duddeck, P. Magnus and J. C. Huffman, Carbohydr. Res. 203, 183 (1990). 128. The intramolecular Buchner reaction of aryl diazoketones. Synthesis and X-ray crystal structures of some

polyfunctional hydroazulene lactones H. Duddeck, G. Ferguson, M. Kennedy, M. A. McKervey and A. R. Maguire, J. Chem. Soc., Perkin I 1055-

1063 (1990). 129. An Adamantane → Protoadamantane Rearrangement and Atropisomerism About a Tert-Butyl-to-Proto- adamantyl Bond H. Duddeck, M. A. McKervey and D. Rosenbaum, Tetrahedron Lett. 31, 4061 (1990). 130. Phytochemical Investigation of the Vegetative Part of Glycyrrhiza Glabra L., Part II. G. H. Mahran, El-Fishawy, M. H. A. Elgamal, F. K. Abdel-Hady and H. Duddeck, Egypt. J. Pharmaceut. Sci.

32, 275 (1991). 131. Saponins of Silene succulenta Forssk. Grown Locally M. S. Karawya, M. H. A Elgamal, N. M. M. Shalaby, H. S. M. Soliman and H. Duddeck, Egypt. J. Pharm.

Sci. 32, 879 (1991).

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132. A Further Contribution to the Triterpenoid Constituents of Glycyrrhiza Glabra L. G. H. Mahran, M. H. A. Elgamal, F. K. Abdel-Hady, A. G. Hanna and H. Duddeck, Z. Naturforsch. 45c, 937

(1990). 133. A Digiferruginol Glycoside from the Roots of Rubia Schumanniana Y.-L. Liu, B.-Zh. Chen, Y.-L. Bai, H. Duddeck and M. Hiegemann, Phytochemistry 30, 947 (1991). 134. Structure Elucidation by Modern NMR - A Workbook H. Duddeck and W. Dietrich, Springer, Tokyo, 1990. (Japanische Übersetzung der englischen Ausgabe). 135. Constituents of Achillea Santolina M. H. A. Elgamal, A. G. Hanna and H. Duddeck, Fitoterapia 62, 359 (1991). 136. Constituents of Achillea Fragrantissima M. H. A. Elgamal, S. Abd El-Wahab and H. Duddeck, Fitoterapia 62, 362 (1991). 137. Constituents of Artemisia Monosperma M. H. A. Elgamal, F. Y. Yassin and H. Duddeck, Fitoterapia 62, 360 (1991). 138. Constituents of Cynara Sibthorpiana M. H. A. Elgamal, N. M. M. Shalaby and H. Duddeck, Fitoterapia 62, 361 (1991). 139. Synthesis and NMR Spectra of Substituted 2-Tert.-Butyladamantan-2-ols H. Duddeck and D. Rosenbaum, J. Org. Chem. 56, 1700 (1991). 140. Reactions of Substituted 2-Tert.-Butyl-adamantan-2-ols H. Duddeck and D. Rosenbaum, J. Org. Chem. 56, 1707 (1991). 141. Five-Membered Ring Formation of 2-Hydroxyethyl Malonate and Acetoacetate Derivatives. The Problem of

O- Versus C-Alkylation E. Adams, M. Hiegemann, H. Duddeck and P. Welzel,Tetrahedron 46, 5975 (1990). 142. Synthesis of 5α-Cholestan-3-spiro-3,4'-acetyl-2-(acetylamino)-∆2-1,3,4-thiadiazoline from 5α-Cholestan-3-

one M. R. Islam and H. Duddeck, J. Bangladesh Chem. Soc. 2, 81 (1989). 143. Synthesis of Some Adamantane-1,2,4-Triazole, -Triazoline and 1,3,4-Thiadiazoline Derivatives M. R. Islam, Q. M. N. Huda and H. Duddeck, Indian J. Chem. 29B, 376 (1990). 144. NMR Spectra and Conformational Analysis of Substituted 2,3-Dihydro-(1,5)-benzoxazepin-4(5H)-one Derivatives J. Ott, M. Hiegemann and H. Duddeck, Magn. Reson. Chem. 29, 244 (1991). 145. 77Se, 13C and 1H NMR Spectra of Phenylselenenylcycloalkanes, -cycloalkenes, Some of Their Selenoxides

and 125Te NMR of a Tellurium Analogue H. Duddeck, P. Wagner and A. Biallaß, Magn. Reson. Chem. 29, 248 (1991). 146. Conformational Analysis of Benzoanellated Nine-Membered Rings. Part 1. 1,4,5,7-Tetrahydro-3H-2,6-

Benzodithionin Derivatives B. Rys, H. Duddeck and M. Hiegemann, Tetrahedron 47, 1417 (1991). 147. Synthesis of Biologically Active Substances R. Vlahov, D. Krikoryan, V. Tarpanov, G. Spassov, G. Snatzke, H. Duddeck, H. J. Schäfer and K. Kieslich, Izv. Khim. 20, 59 (1987). 148. Heterocyclization with iminium chlorides. V. Condensation of 1,3-Dichlorotrimethinecyanines with 1,3- and

1,2-Dinucleophiles G. Tóth, A. Kovács, I. Bitter and H. Duddeck, Liebigs Ann. Chem.,1991, 1215.

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149. Natural Abundance 17O NMR Spectra of Thio Analogues of Chromanones, Chromones, Flavanones and Flavones

H. Duddeck and A. Lévai, Magn. Reson. Chem., 30, 65 (1992). 150. 77Se-NMR-Spektroskopie, Anwendungen in der organischen Chemie H. Duddeck, Gesellschaft Deutscher Chemiker, 23. Hauptversammlung, München, 1991, VCH, Programm

und Kurzreferate, Seite 481. 151. Synthese und Stereochemie von Spiropyrazolinen G. Tóth, A. Szöllösy, A. Lévai and H. Duddeck, Gesellschaft Deutscher Chemiker, 23. Hauptversammlung, München, 1991, VCH, Programm und Kurzreferate, Seite 471. 152. Circular Dichroism of Dimeric Steroid Oximes H. Duddeck, J. Frelek, G. Snatzke, W. J. Szczepek and P. Wagner, Proc. 4th Int. Conf. CD, Bochum, 1991, S. 328. 153. Application de la RMN a deux Dimensions a la Determination Structurale de Sesquiterpene Lactones et Flavonoides Isolés de Plantes Medicinales Rwandaises de la Famille des Compositae J. Mungarulire, Y. Fujimoto, H. Duddeck, R. M. Munavu, N. Ikekawa and J. Nkiliza, Proc. Intern. Conf. Res.

Prod Drugs Medicin. Plants, Kigali, Rwanda, 1990. 154. Stucture of 3,5-Di-t-butyl-10-iodo-protoadamantane B. Kojic-Prodic, M. Luic, B. Nigovic, H. Duddeck and D. Rosenbaum, Acta Cryst C47, 131 (1992). 155. Constituents of Cleome amblyocarpa Barr and Murb. M. H. A. Elgamal, N. M. M. Shalaby and H. Duddeck, Fitoterapia LXIII, 285 (1992). 156. Synthesis, Tautomerism and Stereochemistry of Spiropyrazolines G. Tóth, A. Lévai and H. Duddeck, Magn. Reson. Chem. 30, 235 (1992). 157. Heterocyclization with Iminium Chlorides. V. Condensation of 1,3-Dichlorotrimethinecyanines with 1,3- and

1,2-Dinucleophiles G. Tóth, A. Kovács, I. Bitter and H. Duddeck, Liebigs Ann. Chem. 1991, 1215. 158. Conformational Analysis of Benzoannulated Nine-Membered Rings. Part 2. X-Ray Analysis and Force-Field

Calculations of 1,4,5,7-Tetrahydro-3H-2,6-Benzodithionin Derivatives B. Rys, E. Szneler, J. Grochowski, P. Serda and H. Duddeck, J. Mol. Struct. 271, 301 (1992). 159. Conformational Studies of Benzo-phosphabicyclooctenes G. Tóth, A. Kovács, G. Keglevich and H. Duddeck, Magn. Reson. Chem. 30, 449 (1992). 160. Synthesis and Spectroscopic Charaterization of Dimeric Steroid Oximes H. Duddeck, J. Frelek, G. Snatzke, W. J. Szczepek and P. Wagner, Liebigs Ann. Chem. 1992, 715. 161. Conformational Analysis of Benzoannulated Nine-Membered Rings, Part 3. 1,4,5,7-Tetrahydro-3H-2,6- benzodiselenine and its 4-Spiro Derivatives B. Rys, H. Duddeck and M. Hiegemann, J. Heterocycl. Chem. 29, 967 (1992). 162. Natural Abundance 17O NMR Spectra of Some Sulfinylimines and Isocyanates C. O. Della Védova, H. Duddeck and H.-W. Praas, Magn. Reson. Chem. 30, 962 (1992). 163. Spectroscopic Properties of 6-Hydroximino-5β-Cholestane Derivatives H. Duddeck, J. Frelek, C. Krüger, G. Snatzke, W. J. Szczepek, P. Wagner and St. Werner, Tetrahedron:Asymm. 3, 613 (1992). 164. Crispane and Crispanone - Two Compounds from Petroselium crispum with a New Carbon Skeleton M. H. Spraul, S. Nitz, F. Drawert, H. Duddeck and M. Hiegemann, Phytochemistry 31, 3109 (1992).

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165. Determination of Relative Configuration by Nuclear Magnetic Resonance Methods (Übersichtsartikel) H. Duddeck, in Houben-Weyl, Methoden der Organischen Chemie, Band E21a, 293 (1995). 166. 1,3-Diklór-trimethincianinok kondenzációja 1,3- és 1,2-dinukleofilekkel G. Tóth, A. Kovács, I. Bitter and H. Duddeck, Magyar Kém. Polyóirat 98, 231 (1992). 167. Synthesis and Conformational Analysis of Some Spiropyrazoline Isomers G. Tóth, A. Lévai, A. Szöllosy and H. Duddeck, Tetrahedron 49, 863 (1993). 168. 13C and 17O NMR Spectra of Ketenes: a New and Unusual Type of Heavy-Atom Effect H. Duddeck and H.-W. Praas, Magn. Reson. Chem. 31, 182 (1993). 169. Structure Elucidation by Modern NMR - A Workbook (Chinesische Übersetzung der englischen Ausgabe) H. Duddeck and W. Dietrich, Peking, VR China, 1991. 170. Structure Elucidation by Modern NMR - A Workbook; 2nd, revised and enlarged edition H. Duddeck and W. Dietrich, Springer-Steinkopff, New York, 1992. 171. 77Se, 13C and 1H NMR Spectra of Acyclic Phenylselenenylalkanes, -alkenes and Some of Their Selenoxides H. Duddeck, P. Wagner and B. Rys, Magn. Reson. Chem. 31, 736 (1993). 172. Coumarins and Coumarin Glucosides from the Roots of Ammi majus L. M. H. A. Elgamal, N. M. M. Shalaby, H. Duddeck and M. Hiegemann, Phytochemistry 34, 819 (1993). 173. (R)-Prechrysophanol from Aloe Graminicola A. Yenesew, J. Ogur and H. Duddeck, Phytochemistry 34, 1442 (1993). 174. Isolation of Two Adjuncts from the Fruits of Ammi Majus L. M. H. A. Elgamal, N. M. M. Shalaby and H. Duddeck, Nat. Prod. Lett. 3, 209 (1993). 175. Flavonoid Glucosides from Sideritis species A. A. Sattar, V. Bankova, S. Spassov and H. Duddeck, Fitoterapia LXIV, 278 (1993). 176. Preparation, Separation and NMR Spectral Peak Assignment to Regio-Isomeric Unsymmetrical

Benzimidazoles M. Hasan, N. Rashid, F. Malik, K. Akhtar, S. Osman and H. Duddeck, J. Chem. Soc. Pak. 14, 54 (1992). 177. Synthese von 1'H-5α-Cholest-2-eno[3,2-b]indolen J. Samu, J. Botyánszki, H. Duddeck and G. Snatzke, Liebigs Ann. Chem. 1993, 1225. 178. Chiral Recognition of Olefins by 1H NMR Spectroscopy in the Presence of a Chiral Dirhodium Complex K. Wypchlo and H. Duddeck, Tetrahedron:Asymm. 5, 27-30 (1994). 179. Synthesis and Conformational Analysis of 2-(Indol-3-yl)ethyl α-L-arabinopyranoside and its 2,3,4-tri-O- acetyl derivative S. Tomic, B. P. van Eijck, J. Kroon, B. Kojic-Prodic, G. Lacan, V. Magnus, H. Duddeck and M. Hiegemann,

Carbohydr. Res. 259, 175 (1994). 180. Substituent Effects and Stereochemistry in 125Te NMR Spectroscopy. Diorganotellurium Dihalides and Some Tellurides and Ditellurides H. Duddeck and A. Biallaß, Magn. Reson. Chem. 32, 303 (1994). 181. Iridoid Glycosides from Linaria Species N. V. Handjieva, E. I. Ilieva, S. L. Spassov and H. Duddeck, Tetrahedron 49, 9261 (1993). 182. Using Remote Imaging Plate Powder Diffraction Patterns for Preliminary Investigation of Organic

Microcrystals J. Grochowski, P. Serda and H. Duddeck, HASYLAB Jahresbericht 1993.

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183. Isolation of Two Triterpene Saponins from Gypsophila Capillaris (Forssk.) M. H. A. Elgamal, H. S. M. Soliman, M. S. Karawya and H. Duddeck, Nat. Prod. Lett. 4, 217 (1994). 184. Bianthrones from Senna Longiracemosa G. Alemayehu, B. Abegaz, G. Snatzke and H. Duddeck, Phytochemistry 32, 1273 (1993). 185. Stereochemistry in Cross-Coupling Reaction of Crotyl Alcohol Derivatives and Arylmagnesium Bromides on Trans-bis-1S,2S- and Trans-bis-1R,2R-(diphenylphosphino)cyclopentanenickel Dibromide V. A. Pavlov, E. A. Mistryukov, H. Duddeck, M.G. Vinogradov and (the late) G. Snatzke, J. Mol. Catal. 79,

55 (1993). 186. Two novel esters of angelic acid from parsley M. H. Spraul, S. Nitz, F. Drawert and H. Duddeck, Chem., Mikrobiol., Technol. Lebensm. 13, 178 (1991). 187. NMR of chalcogen nuclei and their application in natural products chemistry H. Duddeck, Stud. Nat. Prod. Chem. 9, 109 (1991). 188. Villosagenin I and II, two novel pentacyclic 28-nortriterpenes from Silene villosa (Forssk.) M. H. A. Elgamal, H. S. M. Soliman, M. S. Karawya and H. Duddeck, Nat. Prod. Lett. 4, 297 (1994). 189. Conformational Analysis of Benzoannulated Nine-Membered Rings. Part 4. 7,8-Dihydro-6H-dibenzo[f.h]-

[1.5]dioxonin and its Derivatives B. Rys and H. Duddeck, Magn. Reson. Chem. 33, 110 (1995). 190. Synthetic and Structural Studies of Key Intermediates Towards Forskolin and/or Erigerol. Relative

Stereochemistry, Conformational Preferences and Stelectivity Control J. A. Bacigaluppo, M. I. Colombo, M. González-Sierra, M. D. Preite, J. Zinczuk, E. A. Rúveda, H. Duddeck

and M. Hiegemann, J. Chem. Soc., Perkin Trans. 1993, 2009. 191. Isolation of further triterpene saponins from Gypsophila capillaris M. H. A. Elgamal, H. S. M. Soliman, M. S. Karawya, B. Mikhova and H. Duddeck, Phytochemistry 38, 1481

(1995). 192. Intramolecular Cyclization of Steroidal Diketo Aldehydes to Acetals Z. Boncza-Tomaszewski and H. Duddeck, Collect. Czech. Chem. Commun. 58, 925 (1993). 193. Selenium-77 Nuclear Magnetic Resonance Spectroscopy (Übersichtsartikel) H. Duddeck, Progr. NMR Spectrosc. 27, 1 (1995). 194. A Novel Triterpene Saponin from Gypsophila capillaris M. H. A. Elgamal, H. S. M. Soliman, H. Duddeck, B. Mikhova and M. Gartmann, Z. Naturforsch. 50b, 563

(1995). 195. Structural Investigation and Conformational Analysis of Helianthosid 2, a Saponin from Helianthus annuus L. M. Hiegemann, H. Duddeck, G. Bader and K. Hiller, Magn. Reson. Chem. 33, 337 (1995). 196. A Surprising Eight-Membered Ring Synthesis Leading to Enantiomerically Pure Tricyclic Benzodiazepine

Derivatives A. Hakiki, M. Mossadak, M. Mokhles, F. Rouessac, H. Duddeck and B. Mikhova, Tetrahedron 51, 2293

(1995). 197. 77Se and 13C NMR Spectroscopy of Some 1,2,3-Selenadiazoles H. Duddeck and T. Hotopp, Magn. Reson. Chem. 33, 490 (1995). 198. NMR Investigation and Conformational Analysis of a Synthetic Hexasaccharide H. Hiegemann, H. Duddeck, R. R. Schmidt and A. Toepfer, Z. Naturforsch. 50b, 1091 (1995).

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199. Syntheses and CD Studies of 5α-Cholesteno[3,2-d]-, -[2,3-d-] and [3,4-d]-pyrimidines M. Hasan, N. Rashid, K. M. Khan, G. Snatzke, H. Duddeck and W. Voelter, Liebigs Ann. Chem. 1995, 889. 200. Nachruf auf Prof. Dr. Dr.h.c.(H) Günther Snatzke, Liebigs Ann. 1995, I. 201. Phytoecdysones of Silene villosa M. H. A. Elgamal, M. S. Karawya, H. S. M. Soliman and H. Duddeck, unbekannte Literaturstelle (CAS). 202. Tetracyclic Alkaloids of the Sparteine Group. 1H and 13C NMR Spectroscopy and Conformational Analysis H. Duddeck, J. Skolik and Urszula Majchrzak-Kuczynska, Khim. Geterotsikl. Soedin. 1995, 1026-1033 (in

Englisch). 203. Synthesis and Conformational Analysis of the Plant Hormone (Auxin) Related 2-(Indol-3-yl)ethyl - and 2-

Phenylethyl β-D-xylopyranosides and Their 2,3,4-Tri-O-acetyl Derivatives S. Tomic, B. P. van Eijck, B. Kojic-Prodic, J. Kroon, V. Magnus, B. Nigovic, G. Lacan, N. Ilic, H. Duddeck

and M. Hiegemann, Carbohydr. Res. 270, 11-32 (1995). 204. Sulphur, Selenium & Tellurium NMR (Review) H. Duddeck, Encyclopedia of Nuclear Magnetic Resonance, Hrsg. D. M. Grant and R. K. Harris, Vol. 7, p.

4623-4636, Wiley, Chichester, 1996. 205. 13C NMR Spectroscopy of Coumarins - A Comprehensive Review B. Mikhova and H. Duddeck, Studies in Natural Products Chemistry (Hrsg. Atta-ur-Rahman), Elsevier,

Amsterdam, 18, 971-1080 (1996). 206. Syntheses and CD Studies of Optically Active Substituted 1,3,4,5-Tetrahydro-2H-1,5-benzodiazepin-2-ones F. Malik, M. Hasan, K. M. Khan, S. Perveen, G. Snatzke, H. Duddeck and W. Voelter, Liebigs Ann. Chem.

1995, 1861-1869. 207. Syntheses and CD Studies of New [4,3-d]- and [7,6-d]-Cholestenopyrimidines M. Hasan, N. Rashid, K. M. Khan, S. Perveen, G. Snatzke, H. Duddeck and W. Voelter, Liebigs Ann. Chem.

1995, 1871-1876. 208. Conformational Analysis of Benzoannulated Nine-membered Rings. Part 5. 1,2,6.7-Tetrahydro-4H-3,5-

benzodioxonin B. Rys, E. Szneler and H. Duddeck, Liebigs Ann. Chem. 1996, 701-704. 209. Synthesis and Conformational Analysis of Plant Hormone (Auxin) Related compounds 2-(Indol-3-yl)ethyl β-

D-galactopyranosides and its 2,3,4,6-tetra-O-acetyl derivatives S. Tomic, B. Kojic-Prodic, V. Magnus, G. Lacan, V. Magnus, H. Duddeck and M. Hiegemann, Carbohydr.

Res. 279, 1-19 (1995). 210. Preparation, separation and 1H-NMR Spectral Peak Assignment to Regio-Isomeric Unsymmetrical Benzimid-

azoles M. Hasan, N. Rashid, F. Malik, K. Akhtar, S. Osman and H. Duddeck, Rev. Roum. Chim. 38, 711-718 (1993). 211. Anthraquinones from Senna multiglandulosa B. M. Abegaz, M. Bezabih, G. Alemayehu and H. Duddeck, Phytochemistry 35, 465-568 (1994). 212. Structure of a Novel Triterpene Saponin from Gypsophila Capillaris (Forssk.) M. H. A. Elgamal, H. S. M. Soliman, G. Tóth, J. Halász and H. Duddeck, Magn. Reson. Chem. 34, 697-702

(1996). 213. Syntheses and CD Studies of New Optically Active Substituted 1,5-Benzodiazepine Derivatives F. Malik, M. Hasan, K. M. Khan, G. Snatzke, S. Perveen, G. Snatzke, H. Duddeck and W. Voelter, Liebigs

Ann. Chem. 1996, 127-134.

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214. 77Se Shielding Tensors of Diphenyldiselenide, Comparison of the Results from CP/MAS NMR Spectroscopy and IGLO Calculations

G. Balzer, H. Duddeck, U. Fleischer and F. Röhr, Fresenius J. Analyt. Chem. 357, 473-476 (1997). 215. Chiral Recognition of Epoxides by 1H NMR Spectroscopy in the Presence of a Chiral Dirhodium Complex K. Wypchlo and H. Duddeck, Chirality 9, 601-603 (1997). 216. Dirhodium Complexes, New Auxiliaries for Chiral Recognition of Olefins, Nitriles and Some Other Organic

Compounds H. Duddeck, K. Wypchlo, C. Meyer, S. Hameed and R. Ahmad, VI Encontro de Usuários de Ressonáncia

Magnética Nulcear, Rio de Janeiro, Brazil, 1997, p. 481-486. 217. Applications of 77Se NMR Spectroscopy in Organic Synthesis H. Duddeck, VI Encontro de Usuários de Ressonáncia Magnética Nulcear, Rio de Janeiro, Brazil, 1997, p. 459-468. 218. Ring Opening Reactions of 6-Deoxy-9-deoxo-9-aza-9a-homoeryrythromycin A 6,9-Cyclic Imino Ether G. Lazarevski, G. Kobrehel, B. Metelko and H. Duddeck, J. Antibiot. 49, 1066-1069 (1996). 219. Synthesis of 2[1'(3',5'-Disubstituted Pyrazolyl)Methyl]-5-Phenyl Amino-1,3,4-Thiadiazoles and 1,2,4-

Triazoles as Potential Therapeutic Agents R. Ahmad, M. Zia-ul-Haq, R. Jabeen and H. Duddeck, Turk. J. Chem. 20, 186-193 (1996). 220. Study of the Conformational Equilibrium of 2-(2'-Hydroxyphenyl)-4-phenyl-3H-1,5-benzodiazepine using 1H,

13C and 15N NMR Spectroscopy R. Ahmad, M. Zia-Ul-Haq, H. Duddeck, L. Stefaniak and J. Sitkowski, Monatsh. Chem., 128, 633-640

(1997). 221. Synthesis and Spectroscopic Investigation of Some Dimeric Coumarin and Furanocoumarin Models M. H. A. Elgamal, N. M. M. Shalaby, M. A. Shaban, H. Duddeck, B. Mikhova, A. Simon and G. Tóth,

Monath. Chem. 128, 701-712 (1997). 222. Structures of Two Novel Triterpene Saponins from Arenaria Filicaulis (Boiss.) M. H. A. Elgamal, H. S. M. Soliman, D. T. Elmunajjed, G. Tóth, A. Simon and H. Duddeck, Magn. Reson.

Chem 37, 637-642 (1997). 223. Two Triterpene Saponins from Arenaria Filicaulis (Boiss.) M. H. A. Elgamal, H. S. M. Soliman, D. T. Elmunajjed, G. Tóth, A. Simon and H. Duddeck, Phytochemistry,

49, 189-193 (1998). 224. Structure of a Further Triterpene Saponin from Arenaria Filicaulis (Boiss.) G. Tóth, A. Simon, M. H. A. Elgamal, H. S. M. Soliman, D. T. Elmunajjed, Gy. Horváth and H. Duddeck, Magn. Reson. Chem. 36, 376-380 (1998). 225. Chiral Recognition of Selenides and Iodides by 1H NMR Spectroscopy in the Presence of a Chiral Dirhodium

Complex S. Hameed, R. Ahmad and H. Duddeck, Heteroatom Chem. 9, 471-474 (1998). 226. Strategies and Tactics in Structure Elucidation of Unknown Natural Products Structures by Modern NMR H. Duddeck, Nat. Prod. Analysis, P. Schreier, M. Herderich, H.-U. Humpf and W. Schwab (Hrsg.), S. 105-

118, Vieweg, Braunschweig/Wiesbaden, 1998. 227. Chiral Recognition of Nitriles by 1H NMR Spectroscopy in the Presence of a Chiral Dirhodium Complex S. Hameed, R. Ahmad and H. Duddeck, Magn. Reson. Chem. 36, S47-S53 (1998). 228. Constitution, Stereochemistry and Conformational Behaviour of the Photoreaction Product of 7-Deacetoxy-7-

oxo-khivorin J. I. Okogun, H. Duddeck, G. Habermehl, H. C. Krebs, G. Tóth and A. Simon, Magn. Reson. Chem. 36, 371-

375 (1998).

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229. Structure Elucidation by Modern NMR - A Workbook; 3rd, revised and updated edition H. Duddeck, W. Dietrich and G. Tóth, Springer-Steinkopff, New York, 1998. 230. 13C NMR Spectroscopy of Tri- and Tetracyclic Quinolizidine Alkaloids. Compilation and Discussion

(Review) B. Mikhova and H. Duddeck, Magn. Reson. Chem. 36, 779-796 (1998). 231. A Further Contribution to Some α- and γ-Pyrone Constituents of Ammi Visnaga L. M. H. A. Elgamal, N. M. M. Shalaby, A. M. El-Hagrassy, A. Z. Hassan, N. A. M. Morsy, G. Tóth, A. Simon

and H. Duddeck, Fitoterapia, LXIX, 549-550 (1998).

232. A Revised Structure for Crotaramosmin from Crotolaria ramosissima M. S. Rao, P. S. Rao, G. Tóth, B. Balázs and H. Duddeck, J. Nat. Prod. 61, 1148-1149 (1998). 233. Structure Elucidation of Triterpenoid Saponins by High-Field NMR M. H. A. Elgamal, H. S. M. Soliman, D. T. Elmunajjed, H. Duddeck, G. Tóth and A. Simon, Nat. Prod. Ana-

lysis, P. Schreier, M. Herderich, H.-U. Humpf and W. Schwab (Hrsg.), S. 129-130, Vieweg, Braun-schweig/Wiesbaden, 1998.

234. Synthesis and Spectroscopic Investigation of Some Dimeric Coumarin and Furocoumarin Models M. H. A. Elgamal, N. M. M. Shalaby, M. A. Shaban, H. Duddeck, B. Mikhova, A. Simon and G. Tóth, Nat.

Prod. Analysis, P. Schreier, M. Herderich, H.-U. Humpf and W. Schwab (Hrsg.), S. 131-132, Vieweg, Braun-schweig/Wiesbaden, 1998.

235. Structures of Three Novel Triterpene Saponins from Arenaria Filicaulis Boiss. M. H. A. Elgamal, H. S. M. Soliman, D. T. Elmunajjed, H. Duddeck, Gy. Horváth, A. Simon and G. Tóth,

Nat. Prod. Analysis, P. Schreier, M. Herderich, H.-U. Humpf and W. Schwab (Hrsg.), S. 133-134, Vieweg, Braunschweig/Wiesbaden, 1998.

236. Constituents from Taxus Species B. Singh, R. K. Gujral, R. P. Sood and H. Duddeck, Planta Med. 63, 191-192 (1997). 237. Constituents of Crotolaria trifoliastrum roots M. S. Rao, J. K. Kumar, P. S. Rao, G. Tóth, A. Simon, B. Balázs and H. Duddeck, Fitoterapia 70, 200-202

(1999). 238. Synthesis and CD spectral studies of some fused cholestenopyrimidines M. Hasan, N. Rashid, W. Voelter, G. Snatzke, H. Duddeck, Pure Appl. Chem. 66, 2057-2062 (1994). 239. Complete 1H and 13C Signal Assignments of 5α-Cardenolides Isolated from Calotropis procera R. BR. M. H. A. Elgamal, A. G. Hanna, N. A. M. Morsy, H. Duddeck, A. Simon, T. Gáti and G. Tóth, J. Mol. Struct.

477, 201-208 (1999). 240. Structure Elucidation of Saponins and Related Natural Products by NMR Spectroscopy H. Duddeck. Polish J. Chem. 73, 163-171 (1999). 241. 4-Acylpyrazoloneimine Schiff Bases and Their Metal Complexes: Synthesis and Spectroscopic Studies B. A. Uzoukwu, K. Gloe and H. Duddeck, Synth. React. Inorg. Met.-Org. Chem. 28, 819-831 (1998). 242. Extraction of Uranium(VI) and Vanadium(V) with 4-adipoyl and 4-sebacoyl derivatives of bis(1-phenyl-3-

methyl-pyrazolone-5) and effect of decanol on the distribution behaviour B. A. Uzoukwu, K. Gloe and H. Duddeck, Solv. Extract. Ion Exchange. 16, 751-774 (1998). 243. Metal(II) Complexes of 4-Acylbis(1-phenyl-3-methylpyrazolones): Synthesis and Spectroscopic Studies B. A. Uzoukwu, K. Gloe and H. Duddeck, Synth. React. Inorg. Met.-Org. Chem. 28, 207-221 (1998).

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244. Synthesis and Spectroscopic Studies of 4-adipoyl-bis(1-phenyl-3-methyl-pyrazolone-5) as a bis-(1,3-diketone)

B. A. Uzoukwu, K. Gloe and H. Duddeck, J. Nat. Sci. Counc. Sri Lanka 26, 229 (1998). 245. Complete 1H and 13C Signal Assignments of 5β-Cardenolides Isolated from Acokanthera spectabilis Hook F. A. G. Hanna, M. H. A. Elgamal, A. Z. Hassan, H. Duddeck, A. Simon, J. Kovács and G. Tóth, Magn. Reson.

Chem. 36, 936-942 (1998). 246. Separation of U(VI) from V(V) and Extraction-Spectrophotometric Analysis with 4-Acylbis(1-phenyl-3-

methyl-pyrazolones B. A. Uzoukwu, K. Gloe and H. Duddeck, Radiochim. Acta 81, 33-37 (1998). 247. A New Gypsogenin Saponin from Arenaria Filicaulis H. S. M. Soliman, M. H. A. Elgamal, A. Simon, G. Tóth, Gy. Horváth and H. Duddeck. J. Nat. Prod. 62,

885-888 (1999) 248. Determination of the Relative Configuration of the C-19 to C-29 Fragment of Amycin B by 1H and 13C NMR

Investigations F. Hoyer, G. Habermehl, H. Duddeck and G. Tóth, Magn. Reson. Chem. 37, 371-375 (1999). 249. Isolation of Polyarvin, a New Prenylated Chalcone from Polygala arvensis M. S. Rao, P. S. Rao, G. Tóth, B. Balázs and H. Duddeck, Nat. Prod. Lett. 12, 277-280 (1998).

250. Kinetic Studies of the Solvent Extraction of UO2(II) and Hg(II) with 4-Sebacoylbis(1-phenyl-3-methylpyrazo-

lone-5) in Chloroform B. A. Uzoukwu, K. Gloe and H. Duddeck, Radiochim. Acta 83, 69-74 (1998). 251. Further Dihydrochalcones from Crotolaria Ramosissima J. K. Kumar, T. Narender, M. S. Rao, P. S. Rao, G. Tóth, B. Balázs and H. Duddeck, J. Braz, Chem. Soc. 10,

278-280 (1999). 252. Flavone Glycosides from Polygala Telephioides and Polygala Arvensis J. K. Kumar, M. S. Rao, P. S. Rao, G. Tóth, B. Balázs and H. Duddeck, Nat. Prod. Lett. 14, 35-38 (1999). 253. Neoadifoline, A New Indole Alkaloid from the Heartwood of Adina Cordifolia B. Balázs, G. Tóth, P. S. Rao, T. Narender, N. S. Rao, Gy. Horváth and H. Duddeck, Magn. Reson. Chem.

37, 751-753 (1999). 254. Unusual Formation of 2-Aryl-5-oxo-7,7-dimethyl-6,8-diseleno-5,6,7,8-tetrahydroquinazolines N. Tonkikh, H. Duddeck, M. Petrova, O. Neilands, A. Strakovs, Eur. J. Org. Chem. 1999, 1585-1588. 255. Chiral Discrimination of Methylphenylsulfoxide Using Dirhodium Complexes C. Meyer and H. Duddeck, Magn. Reson Chem. 38, 29-32 (2000). 256. An Unexpected Synthesis of Novel Oxygen-Bridged 1,5-Benzothiazepine Derivatives and their Reductive

Five-Membered-Ring Opening R. Ahmad, M. Zia-ul-Haq, S. Hameed, H. Akhtar and H. Duddeck, Monath. Chem./Chem. Monthly 131, 393-

400 (2000). 257. Two Cardenolides from Calotropis Procera A. G. Hanna, M. H. A. Elgamal, N. A. M. Morsy, H. Duddeck, J. Kovács and G. Tóth, Magn. Reson. Chem.

37, 754-757 (1999). 258. Chiral Aryl Sulfonyl Hydantoins as Hypoglycemic agents R. Ahmad, R. Jabeen, M. Zia-ul-Haq, H. Nadeem, H. Duddeck and E. J. Verspohl, Z. Naturforsch. B 55b,

203-207 (2000).

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259. 17O NMR Spectroscopy of 1-(2-Hydroxyphenyl)-3-naphthyl-propane-1,3-diones – Influences of Keto-Enol Tautomerism and Substituents

J. L. Jios and H. Duddeck, Magn. Reson. Chem. 38, 512-514 (2000). 260. Synthesis, Multinuclear (1H, 13C and 17O) Magnetic Resonance Spectroscopy and Conformational Analysis of

Some Substituted Aryl Naphthoates J. L. Jios and H. Duddeck, Z. Naturforsch. B. 55b, 189-192 (2000). 261. Substituent Influences on the Keto-Enol Tautomerism in 1-(2-Hydroxyphenyl)-3-α- and -β-naphthylpropane-

1,3-diones Monitored by 1H and 13C NMR Spectroscopy J. L. Jios and H. Duddeck, Z. Naturforsch. B. 55b, 193-202 (2000). 262. Nuclear Magnetic Resonance Data, Chemical Shifts for Oxygen-17 (Datensammlung) H. Duddeck, G. Tóth and A. Simon, Landolt-Börnstein, New Series, R. R. Gupta and M. D. Lechner (Hrsg.),

Band III/35E, 2002. 263. Synthesis and Structure Determination of Some Oxadiazole-2-thione and Triazole-3-thione Galactosides R. Ahmad, R. Iqbal, H. Akhtar, Zia-ul-Haq, H. Duddeck, (the late) L. Stefaniak and J. Sitkowski, Nucleosides

& Nucleotides 20 1671-1682 (2001). 264. Verfahren zum Konservieren von Papier H. Schmidt, R. Kasemann, S. Sepeur and H. Duddeck, Europäische Patentschrift, EP 0 862 671 B1;

05.04.2000. 265. Elucidación estructural mediante RMN, Ejercicios y problemas H. Duddeck, W. Dietrich, G. Tóth, traducción de la 3.a edición revisada y actualizada, translated by A. Herrera Fernández (Madrid), Springer-Verlag Ibérica, Barcelona 2000 266. Synthesis of 1-Methyl bis-dioxopyrolino[1',2':2,3;2",3":6,5] benzene and its Heterocycles via

Thiocarbohydrazone, Thiosemicarbazone M. D. Islam, M. J. Abedin, M. M. Hossain and H. Duddeck, L. J. Bangl. Chem. Soc. 11, 71-78 (1998). 267. Chiral Discrimination of Some Annelated Xanthine Derivatives by the Dirhodium Method S. Rockitt, H. Duddeck, A. Drabczynska and K. Kiec-Kononowicz, Eur. J. Org. Chem. 2000, 3489-3496. 268. First Direct Discrimination of Chiral Phosphorus Thionate (P=S) Derivatives by Multinuclear Magnetic

Resonance Spectroscopy in the Presence of a Chiral Dirhodium Complex S. Rockitt, H. Duddeck and J. Omelanczuk, Chirality 13, 214-223 (2001).

269. Modes of Xanthine Complexation to Dirhodium Tetra-(R)-α-methoxy-α-(trifluoromethyl)-phenylacetate in

Solution and in the Solid State S. Rockitt, R. Wartchow, H. Duddeck , A. Drabczynska and K. Kiec-Kononowicz, Z. Naturforsch. 56b, 319-

324 (2001). 270. Cyclization of Some Isatin-3-Thiosemicarbazones leading to ∆2-1,3,4-Thiadiazolines and their Selective

Deacetylation with Hydrazine Hydrate M. R. Islam, K. Khayer, M. I. Mahmud, M. H. Lingcon, R. Islam and H. Duddeck, J. Bangladesh Chem. Soc.

13, 149-155 (2000). 271. Nuclear Magnetic Resonance Data, Chemical Shifts for Selenium-77 (Datensammlung) H. Duddeck, Landolt-Börnstein, New Series, Band III/35G, 2004. 272. Crystal structure of 1-(4-propanoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-oneimine) 2-aminobenzene,

C19H20N4O and of 1-(4-butanoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-oneimine) 2-aminobenzene, C20H22N4O

B. A. Uzoukwu, K. Gloe, H. Duddeck and O. Rademacher, Z. Kristallogr. NCS 216, 251-254 (2001).

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273. Saturated Amine Oxides. Part 4 – Steric and Electric Field Effects on the 17O NMR Chemical Shifts of Saturated Azaheterocyclic Amine Oxides

F.Potmischil, D. Magiera, H. Duddeck and J. Buddrus, Magn. Reson. Chem. 39, 593-599 (2001). 274. Synthesis of 1,5-Benzodiazepine Nucleosides R. Ahmad, M. Zia-ul-Haq, S. Hameed, H. Nadeem and H. Duddeck, J. Chem. Soc. Pak. 22, 302-308 (2000). 275. Identification and Structure Determination of Four Triterpene Saponins from Middle-East Plants H. S. M. Soliman, A. Simon, G. Tóth and H. Duddeck, Magn. Reson. Chem. 39, 567-576 (2001). 276. Synthesis and multinuclear magnetic resonance investigation of some 1,3-selenazole and 1,3-selenazoline

derivatives H. Duddeck, R. Bradenahl, (the late) L. Stefaniak, J. Jazwinski and B. Kamienski, Magn. Reson. Chem. 39,

709-713 (2001). 277. New Developments in A1 and A2 Adenosine Receptor Antagonists K. Kiec-Kononowicz, A: Drabczynska, E. Pekala, B. Michalak, C. E. Müller, B. Schumacher J. Karolak-

Wojciechowska, H. Duddeck, S. Rockitt, R. Wartchow, Pure & Appl. Chem. 73, 1411-1420 (2001). 278. Complexation of Selenium to (R)-Rh2(MTPA)4 – Thermodynamics and Stoichiometry H. Duddeck, S. Malik, T. Gáti, G. Tóth and M. I. Choudhary, Magn. Reson. Chem., 40, 153-156 (2002). 279. First Direct Discrimination of Chiral Phosphine Selenide (P=Se) Derivatives by Multinuclear Magnetic

Resonance Spectroscopy in the Presence of a Chiral Dirhodium Complex S. Malik, H. Duddeck, J. Omelanczuk and M. I. Choudhary, Chirality 14, 407-411 (2002). 280. N-Aryl Sulfonyl Benzimidazolone Derivatives as Potential Hypoglycemic Agents Ahmad, S. Hameed, H. Duddeck, S. Lenzen, I. Rustenbeck and R. Ahmad, Zeitschr. Naturforsch. 57b, 349-

354 (2002). 281. Synthesis and Charaterization of Some Derivatives of Aminocephalosporanic Acid as Probes for

Pharmacological Studies M. R. Islam, A. S. M. A. Islam and H. Duddeck, J. Bangl. Chem. Soc. 14, 71-78 (2001). 282. Structure Determination of Zinc Complexes of Iminoacetamide Ionophores in Solution and Solid State G. Tóth, B. Balázs, Gy. Horváth, D. Magiera, H. Duddeck and I. Bitter, J. Incl. Phenom., 43, 145-148

(2002). 283. Isolation and structural elucidation of 3,4',5,7-tetraacetyl quercetin from the Adina cordifolia (Karam ki

Gaach) M. S. Rao, H. Duddeck and R. Dembinski, Fitoterapia 73, 353-355 (2002). 284. Structure of a Calotropagenin-Derived Artifact from Calotropis Procera A. G. Hanna, N. M. M. Shalaby, N. A. M. Morsy, A. Simon, G. Tóth, S. Malik and H. Duddeck, Magn.

Reson. Chem. 40, 599-602 (2002). 285. Multinuclear (1H,13C and 15N) Magnetic Resonance Spectroscopy and Substituent Effects of N-Phenoxyethyl-

anilines J. L. Jios, G. P. Romanelli, J. C. Autino, D. Magiera and H. Duddeck, Z. Naturforsch. 57b, 226-232 (2002). 286. Phenylselenenylmenthane Derivatives and Their Enantiomeric Discrimination by 1H and 13C NMR Spectro-

scopy in the Presence of a Chiral Dirhodium Complex S. Malik, S. Moeller, H. Duddeck and M. I. Choudhary, Magn. Reson. Chem. 40, 659-665 (2002).

287. Stable Rh2(MTPA)4←Phosphine Adducts – The First Example of P-Chirality Recognition by 103Rh NMR Signals

D. Magiera, W. Baumann, I. S. Podkorytov, J. Omelanczuk and H. Duddeck, Eur. J. Inorg. Chem., 2002, 3253-3257.

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288. Antimicrobial acitivity and cytotoxicity of Carthamus lanatus R. Taskova, M. Mitova, H. Najdenski, I. Tzvetkova and H. Duddeck, Fitoterapia 74, 540-543 (2002). 289. Synthesis of 1,4-diazepine nucleosides M. Zia-Ul-Haq, S. Hameed, H. Duddeck and R. Ahmed, Turk. J. Chem. 26, 807-813 (2002). 290. Dirhodium Tetraacylate Complexes and Monovalent Ligands. Adduct Formation in Solution as Monitored by

NMR Spectroscopy Z. Rozwadowski, S. Malik, G. Tóth, T. Gáti and H. Duddeck, Dalton Trans., 2003, 375-379. 291. Chiral Phospholene and Phospholane Chalcogenides – Stereochemistry and Chiral Recognition by

Multinuclear NMR Spectroscopy of Their Rh2[(R)-MTPA]4 Adducts D. Magiera, S. Moeller, Z. Drzazga, Z. Pakulski, K. M Pietrusiewicz and H. Duddeck, Chirality 2003, 15,

391-399. 292. Crystal structure of N,N’-ethylenbis(4-propanoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-oneimine,

C28H32N6O2 B. A. Uzoukwu, K. Gloe, H. Duddeck and O. Rademacher, Z. Kristallogr. NCS 216, 151 (2001). 293. The Structure of Marmesinin by Powder and Single-Crystal Diffraction Methods P. Serda, J. Grochowski and H. Duddeck, J. Alloys Compds. 362, 224-230 (2003). 294. Chiral discrimination of organophosphorus compounds by multinuclear magnetic resonance in the presence of

a chiral dirhodium complex. S. Rockitt, D. Magiera, J. Omelanczuk, H. Duddeck, Phosphorus, Sulfur Silicon Relat. Elem. 177, 2079-2080

(2002). 295. Multinuclear Magnetic Resonance Study of Chiral Mesoionic Oxa- and Thiatriazole and Tetrazole Deriva-

tives – Adducts with Dirhodium Complexes and Chiral Recognition J. Jaźwiński, Z. Rozwadowski, D. Magiera and H. Duddeck, Magn. Reson. Chem. 41, 315-323 (2003). 296. Phenylselenenylalkanes, Their Adducts with the Dirhodium Complex Rh2(MTPA)4 and Ligand Exchange

Mechanisms in Solution as Studied by 1H, 13C and 77Se NMR Spectroscopy S. Malik, S. Moeller, G. Tóth, T. Gáti, M. I. Choudhary and H. Duddeck, Magn. Reson. Chem., 41, 455-465

(2003). 297. GC/MS analysis of some bioactive constituents from Carthamus lanatus L. M. Mitova, R. Taskova, S. Popov, R. Berger, U. Krings, N.Handjieva and H. Duddeck. Z. Naturforsch. 58c,

697-704 (2003). 298. Analysis and Biological Activity of the Lipid Extract of Carthamus lanatus L. K. Stefanov, R. Taskova, M. Mitova, M. Topashka, K. Seizova and H. Duddeck, Compt. Rend. Acad. Bulg.

Sci. 56, 13-18 (2003). 299. Bioactive Phenolics from Carthamus lanatus L. R. Taskova, M. Mitova, B. Mikhova and H. Duddeck, Z. Naturforsch. 58c, 704-708 (2003). 300. Phosphine-Dirhodiumtetraacylate-Adducts in Solution: Characterisation by NMR Spectroscopy and Chiral

Discrimination D. Magiera, J. Omelanczuk, K. Dziuba, K. M. Pietrusiewicz and H. Duddeck, Organometallics 22, 2464-

2471 (2003). 301. 17O NMR Data of Phenoxyethyl Derivatives J. L. Jios, H. Duddeck, G. P. Romanelli and J. C. Autino, Magn. Reson. Chem. 41, 739-740 (2003). 302. Pyridine and Aminides Derivatives as Ligands in 1:1 Rh2[tfa]4-Adducts: 1H, 13C and 15N NMR Study J. Jazwinski and H. Duddeck, Magn. Reson. Chem. 41, 921-926 (2003).

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303. Anti-inflammatory and analgesic activity of Carthamus lanatus L. aerial parts A. Bocheva, M. Mitova, R. Taskova, B. Mikhova and H. Duddeck, Fitoterapia 74, 559-563 (2003). 304. Clastogenic effect of Carthamus lanatus L. (Asteraceae) M. Topashka-Ancheva, R. Taskova, N. Handjieva, B. Mikhova and H. Duddeck, Z. Naturforsch. C. 58c,

833-836 (2003). 305. Saturated Amine Oxides: Part 5†. Hydroacridines: Part 24‡. Effects of N-oxidation on the 13C NMR chemical

shifts of saturated six-membered azaheterocyclic tertiary amines F. Potmischil, V. Câmpeanu, H. Herzog, J. Buddrus and H. Duddeck, Magn. Reson. Chem. 41, 554-556

(2003).

306. In Vitro Anti-inflammatory Effect of Carthamus lanatus L. S. Jalil, B. Mikhova, R. Taskova, M. Mitova, H. Duddeck, M. I. Choudhary and Atta-ur-Rahman, Z.

Naturforsch. 58c, 830-832 (2003). 307. Oxygenated Bisabolane Fucosides from Carthamus lanatus L. B. Mikhova, R. Taskova, M. Mitova, K. Alipieva and H. Duddeck, Z. Naturforsch. C 59c, 244-248 (2004). 308. Secondary Phosphine Oxides – Tautomerism and Chiral Recognition Monitored by Multinuclear NMR

Spectroscopy of Their Rh2[(R)-MTPA]4 Adducts D. Magiera, A. Szmigielska, K. M. Pietrusiewicz and Helmut Duddeck, Chirality 16, 57-64 (2004). 309. 77Se NMR Spectroscopy and Its Applications in Chemistry (Review) H. Duddeck, Ann. Rep. NMR Spectrosc. 58, 105-166 (2004). 310. Bis(Phosphine Oxide) Adducts of Rh2(MTPA)4 – Kinetics and Chirality Discrimination T. Gáti, A. Simon,G. Tóth, A. Szmigielska, A. M. Maj, K. M. Pietrusiewicz, S. Moeller, D. Magiera and H.

Duddeck, Eur. J. Inorg. Chem. 2004, 2160-2166. 311. Adducts of Rh2(MTPA)4 with Some Phosphine Chalcogenides - Nature of Binding and Ligand Exchange T. Gáti, A Simon, G. Tóth, D. Magiera, S. Moeller and H. Duddeck, Magn. Reson. Chem. 42, 600-604

(2004). 312. Chemical composition and antitumor activities from Givotia madagascariensis H. C. Krebs, H. Duddeck, S. Malik, W. Beil, P. Rasoanaivo and M. Andrianarijaona, Z. Naturforsch.

59b, 58-62 (2004). 313. Chiral Atropisomeric Diiodobiphenyls – Enantiodifferentiation by the Dirhodium Method S. Moeller, D. Albert, H. Duddeck, A. Simon, G. Tóth, O. M. Demchuk and K. M. Pietrusiewicz, Tetra-

hedron: Asymm. 15, 3609-3616 (2004). 314. Synthesis and spectroscopic characterization of some chromanochalcones and their dihydro derivatives

M. Srinivasa Rao, J. Kotesh, R. Narukulla and H. Duddeck, ARKIVOC 96-102 (2004). 315. Effective Enantiodifferentiation of Spirochalcogenuranes by the Dirhodium Method - Towards the Deter-

mination of Absolute Configurations? T. Gáti, G. Tóth, J. Drabowicz, S. Moeller, E. Hofer, P. L. Polavarapu and H. Duddeck, Chirality 17, S40-

S47 (2005). 316. A comparative study of synthetic methods for nitriles S. Hameed, N. H. Rama and H. Duddeck, J. Chem. Soc. Pak. 27, 667-674 (2005). 317. Chiral Atropisomeric 2-Iodo-4,4´,6,6´-tetramethyl-2´-(diphenylphosphoryl)-1,1´-biphenyl – Enantiodifferen-

tiation by Rh2[MTPA] 4-Adduct Formation and Conformational Analysis S. Moeller, D. Albert, H. Duddeck, A. Simon, G. Tóth, O. M. Demchuk and K. M. Pietrusiewicz,

Phosphorus, Sulfur and Silicon 181, 351-361 (2006).

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318. Absolute configuration of C2 symmetric spiroselenurane: 3,3,3′,3′-tetramethyl-1,1′-spirobi[3H,2,1]-benzoxa-selenole

A. G. Petrovic, P. L. Polavarapu, J. Drabowicz, Y. Zhang, O. J. McConnell and H. Duddeck, Chem. Eur. J. 11, 4257-4262 (2005).

319. Chirality Recognition of Selenium Compounds by NMR Spectroscopy in the Presence of a Chiral Dirhodium

Complex H. Duddeck, S. Malik, S. Moeller, T. Gáti, G. Tóth and Z. Rozwadowski, Phosphorus, Sulfur, Silicon Rel.

Elem. 180, 993-1000 (2005). 320. N-(Chloroacetyl)- and N-(dichloroacetyl)-N-(xylyl)alanine esters – Assignment of absolute configurations and

enantiodifferentiation by the dirhodium method E. Díaz Gómez, J. Jios, C. O. Della Védova, H. D. March, H. E. Di Loreto, G. Tóth, A. Simon, D. Albert, S.

Moeller, R. Wartchow and H. Duddeck, Tetrahedron: Asymm. 16, 2285-2293 (2005). 321. Iridoid- and Lignan Glycosides from Citharexylum spinosum L. B. Balázs, G. Tóth, H. Duddeck and H. S. M. Soliman, Nat. Prod. Res. 20, 201-205 (2006). 322. Glycosides from Bougainvillea Glabra A. Simon, G. Tóth, H. Duddeck, H. S. M. Soliman, I. I. Mahmoud and H. Samir, Nat. Prod. Res. 20, 63-67

(2006). 323. Complete 1H and 13C NMR spectral assignment of N-aralkylsulfonamides, N-sulfonyl-1,2,3,4-tetrahydro-

isoquinolines and N-sulfonyl-2,3,4,5-tetrahydro-1H-2-benzazepines – Conformational analysis of N-[((3´,4´-dichlorophenyl)methyl)sulfonyl]-3-methyl-2,3,4,5-tetrahydro-1H-2-benzazepin

J. L. Jios, G. P. Romanelli, J. C. Autino, H. E. Giaccio, H. Duddeck and M.Wiebcke, Magn. Reson. Chem. 43, 1057-1062 (2005).

324. Rh2[MTPA] 4, a Dirhodium Complex as NMR Auxiliary for Chiral Recognition (Review) H. Duddeck, Chem. Rec. 5, 396-409 (2005). 325. Sesquiterpene lactones from Achillea collina J. Becker ex Reichenb. A. Trendafilova, M. Todorova, B. Mikhova, A. Vitkova and H Duddeck, Phytochemistry 67, 764-770 (2006). 326. The Dirhodium-Method in the Determination of Absolute Configurations of Phospholene Chalcogenides S. Moeller, Z. Drzazga, Z. Pakulski, K. M. Pietrusiewicz and H. Duddeck, Chirality 2006, 18, 395-397;

erratum: ibid., p. 457.

327. Sesquiterpene Lactones from Achillea asplenifolia M. N. Todorova, B. Mikhova, A. Trendafilova, A. Vitkova, H. Duddeck and M. Anchev, Biochem. Syst.

Ecol. 34, 136-143 (2006). 328. Composition of the Essential Oil of Achillea Asplenifolia Vent. from Bulgaria A. Konakchiev, B. Mikhova, M. Todorova, H. Najdenski, I. Tzvetkova, A. Vitkova and H. Duddeck, J. Es-

sent. Oil Bearing Plants 8, 318-323 (2005). 329. Study of Wittig Reaction on Isatin M. R Islam, K. Khayer, A. Akhter and H.Duddeck, J. Bangl. Chem. Soc. 18, 1-8 (2005). 330. Enantiodifferentiation of Aliphatic Ethers by the Dirhodium Method E. Díaz Gómez, D. Albert, H. Duddeck, S. I. Kozhushkov and A. de Meijere, Eur. J. Org. Chem. 2006, 2278-

2280. 331. Enantiodifferentiation of a silane and the analogous hydrocarbon by the dirhodium method –

Silane···dirhodium complex interaction E. Díaz Gómez, D. Albert, J. Mattiza, H. Duddeck, J. Chojnowski and M. Cypryk, Tetrahedron: Asymm. 17,

1743-1748 (2006).

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332. Chemical Composition and Antimicrobial Activity of the Essential Oil from Two Achillea Collina Becker A. Konakchiev, M. Todorova, B. Mikhova, A. Vitkova, H. Najdenski and H. Duddeck, Compt. Rend. Acad.

Bulg. Sci. 59, 505-510 (2006). 333. A new furanocoumarin glycoside from Carum montanum (Apiaceae) M. Benahmed, S. Akkal, S. Louaar, H. Laouer and H. Duddeck, Biochem. System. Ecol. 34, 645-647 (2006). 334. Rh2[(R)-(+)-MTPA]4 as NMR Auxiliary for the Enantiodifferentiation of Chiral Secondary and Tertiary

Phosphine-Borane Complexes J. Mattiza, D. Albert, M. Stankevič, K. Dziuba, A. Szmigielska, K. M. Pietrusiewicz and H. Duddeck, Tetra-

hedron: Asymm. 17, 2689-2696 (2006). 335. Saturated amine oxides: Part 8†

. Hydroacridines: Part 27‡. Effects of N-oxidation and of N-quaternization on the 15N NMR chemical shifts of N-methylpiperidine-derived mono-, bi- and tricycloaliphatic tertiary amines.

F. Potmischil, H. Duddeck, A. Nicolescu and C. Deleanu, Magn. Reson. Chem. 45, 231-235 (2007). 336. Chemotypes in Achillea collina based on sesquiterpene lactone profile M. Todorova, A. Trendafilova, B. Mikhova, A. Vitkova and H. Duddeck, Phytochemistry 68, 1722-30

(2007). 337. Pictet-Spengler Synthesis of Some New Indolo[2,3-c]quinolines S. A. Dabaien, Mustafa, M. El-Abadelah, S. F. Haddad and H. Duddeck, Heterocycles 71, 835-846 (2007). 338. Atropisomeric 3-aryl-2-oxo-4-oxazolidinones and some thione analogues – Enantiodifferentiation

and ligand competition in applying the dirhodium method E. Díaz Gómez, Đ. Doğan, M. Yilmaz, Ö. Demir-Ordu, D. Albert and H. Duddeck, Chirality 20, 344-350

(2008). 339. Isolation and Structure Determination of Compounds from Stachys yemenensis Hedge

H. S. M. Soliman, R. El-Dib, N. M. M. Shalaby, H. Duddeck, A. Simon and G. Tóth, Nat. Prod. Commun. (2007), in print.

340. Benzaldehyde Derivatives from Sarcodontia crocea

T. Kokubun, Z. Rozwadowski and H. Duddeck, J. Nat. Prod. 70, 1539-1541 (2007). 341. Flavonoid aglycones in flower heads of three Achillea species belonging to Achillea millefolium group A. Trendafilova, M. N. Todorova, B. Mikhova and H. Duddeck, Chem. Nat. Prod. 43, 212-213 (2007).

342. Isolation and Structure Determination of Compounds from Stachys yemenensis Hedge

H. S. M. Soliman, R. El-Dib, N. M. M. Shalaby, H. Duddeck, A. Simon and G. Tóth, Nat. Prod. Commun. 2, 977-980 (2007).

343. Enantiodifferentiation of Polyethers by the Dirhodium Method – Part 2. Cyclotriveratrylenes and Crypto-

phanes E. Díaz-Gómez, T. Brotin and H. Duddeck, Tetrahedron: Asymm. 18, 2155-2164 (2007). 344. Chalcogen Atom Competition in the Coordination of Bicyclic β-Lactam Derivatives to a Dirhodium Tetra-

carboxylate Complex E. Díaz Gómez, J. Frelek, M. Woznica, P. Kowalska, J. Jaźwiński and H. Duddeck, Heterocycles, 74, 357-

367 (2007). 345. Origin of 13C Complexation Shifts in the Adduct Formation of 2-Butyl Phenyl Ethers with a Dirhodium Tetra-

carboxylate Complex

E. Díaz Gómez and H. Duddeck, Magn. Reson. Chem. 46, 23-29 (2008). 346. Terpenoids from Achillea distans Waldst. & Kit. ex Willed M. Todorova, A. Trendafilova, B. Mikhova, A. Vitkova and H. Duddeck, Biochem. System. Ecol. 35, 852-

858 (2007).

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347. Inhibitory Effect of Lactone Fractions and Indidvidual Componenets from Three Species of the Achillea Millefolium Complex of Bulgarian Origin on the Human Neutrophils Respiratory Burst Actitvity

M. Iqbal Choudhary, S. Jalil, M. Todorova, A. Trendafilova, B. Mikhova H., Duddeck and Atta-Ur-Rahman, Nat. Prod. Res. 21, 1032-6 (2007).

348. Enantiodifferentiation by 1H and 13C NMR Spectroscopy (Dirhodium Method) – Selectivity of Oxygen Func-

tionalities E. Díaz Gómez, S. Antus, R. Ferenczi, B. Rys, A. Stankiewicz and H. Duddeck, Nat. Prod. Commun. 3, 339-

344 (2008). 349. Chiral Recognition of Ethers by NMR Spectroscopy (minireview) H. Duddeck and E. Díaz Gómez, Chirality 21, 51-68 (2009).

350. Synthesis and Cytotoxicity of Some New 1,3,4-Thiadiazoline Derivatives and Their Mannich Bases S. Sultana, M. Ziaul Hoque, M. R. Islam and H. Duddeck, J. Bangl. Chem. Soc. 20, 79-85 (2007). 351. Synthesis of Some Aldehyde Schiff Bases of 4-Amino-1,2,4-Triazine-3-thione and p-Substituted

Phenylthiazolyl Derivatives and Their Cytotoxic Activities M. Shamsul Azim Khan, M. R. Islam, S. Malik and H. Duddeck, J. Bangl. Chem. Soc. 17, 52-58 (2004). 352. Von molekularen Spiegelbildern – Der Chemiker Günther Snatzke H. Duddeck, in Wilhelm Geerlings (Hrsg.) „Forscherpersönlichkeiten der Ruhr-Universität Bochum“, Klartext Verlag, Essen, 2008, S. 155 – 167. 353. A new method proposed for the determination of absolute configurations of α-amino acids E. Díaz Gómez and H. Duddeck, Magn. Reson. Chem. 47, 222-227 (2009). 354. DFT/GIAO/NBO and 13C NMR study of the δ-syn-axial effect in 2,4-disubstituted adamantanes B. Mikhova, B. Stamboliyska, A. Koch, H. Duddeck, E. Kleinpeter, Magn. Reson. Chem. 46, 1153-1157

(2008). 355. Comparing Various Chiral Dirhodium Tetracarboxylates in the Dirhodium Method J. T. Mattiza, N. Harada, S. Kuwahara, Z. Hassan, H. Duddeck, Chirality 21, 843-849 (2009). 356. Experimental verification of diverging mechanisms in the binding of ether, thioether and sulfone ligands to a

dirhodium tetracarboxylate J. T. Mattiza, V. J. Meyer and H. Duddeck, Magn. Reson. Chem. 48, 192-197 (2010). 357. Stereoisomeric 2-butylphenylsulfoxides and their binding modes in the adduct formation with an

enantiopure dirhodium tetracarboxylate complex J. T. Mattiza, V. J. Meyer and H. Duddeck, J. Mol. Struct. 978, 86-96 (2010). 358. Cytotoxic phenolic glycosides from fresh corms of Colchicum richii H. S. M. Soliman, R. El Dib, A. ElBakry, H. Swelam, H. Duddeck, G. Tóth, A. Simon, Az. J. Nat. Prod. 10,

100-106 (2006). 359. Duddeck, Helmut: Molecular Structures in Three Dimensions H. Duddeck, Encyclopedia of Magnetic Resonance (E. D. Becker, ed.), eds-in-chief R. K. Harris and R. E.

Wasylishen, John Wiley: Chichester. DOI: 10.1002/9780470034590.emrhp1013. Published online 15th December 2010.

360. Secondary metabolites of an Algerian Phlomis bovei and their antioxidant activities N. Zabaat, S. Akkal, N. Darbourne, H. Laouer, M. G. Dijoux-France, H. Duddeck, Chem. Nat. Prod. 46, 454

(2010). 361. A new isoflavone glycoside from the aerial parts of Retama sphaeorcarpa S. Akkal,S. Louaar, M. Benhamed, H. Laouer and H. Duddeck, Chem. Nat. Compounds, 46, 718-721 (2010);

Khim. Prir. Soedin. 2010, 608-609.

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362. Studies of the Reaction between Isatine and Diethylamine Md. Arifuzzaman, R. Khan Kandahary, M. R. Islam, H. Duddeck and E. Díaz Gómez, J. Bangladesh Chem.

Soc., in print. 363. Antimicrobial activity of Tamarix gallica L. Extracts and Isolated Flavonoids M. Lefahal, M. Benahmed, S. Louaar, A. Zallagui, H. Duddeck, K. Medjroubi and S. Akkal, Adv. Nat. Appl.

Sci. 4, 289-292 (2010). 364. Adamantanes as Spherical Nanosondes in Adducts with a Chiral Dirhodium Complex – Discriminating

Enantiomers and Probing Spatial Proximities H. Duddeck, G. Tóth, A. Simon, E. Díaz Gómez, J. T. Mattiza, Magn. Reson. Chem. 49, 328-342 (2011). 365. Optimizing dirhodium(II) tetrakiscarboxylates as chiral NMR auxiliaries J. T. Mattiza, J. Fohrer, H. Duddeck, M. G. Gardiner and A. Ghanem, Org. Biomol. Chem. 2011, 9, 6542-

6550. 366. Flavonoids from Algerian endemic Centaurea microcarpa and their chemotaxonomical significance S. Louaar, A. Achouri, M. Lefahal, H. Laouer, K. Medjroubi, H. Duddeck and S. Akkal, Nat. Prod.

Commun., 2011, 6, 1603-1604. 367. Competition of Ester, Amide, Ether, Carbonate, Alcohol and Epoxide Ligands in the Dirhodium Experiment

(Chiral Discrimination by NMR Spectroscopy) J. T. Mattiza, V. Meyer, G. Özüduru, T. Heine, J. Fohrer, H. Duddeck, Nat. Prod. Commun. 2012,7, 359-

362. 368. Secondary metabolites of Ranunculus bulbosus S. Louaar, S. Akkal, H. Duddeck, E. Makhloufi, A. Achouri, and K. Medjroubi, Chem. Nat. Prod. 2012, 48,

166-167.