terp enos
TRANSCRIPT
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UNIVERSIDADE FEDERAL DE GOIÁS
DEPARTAMENTO DE QUÍMICA
TERPENOS
JAQUELINE GONÇALVES BORGES
QUÍMICA ORGÂNICA II
JUNHO/2008
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CONTÉUDO� DEFINIÇÃO� TERPENÓIDE� EXEMPLOS � CLASSIFICAÇÃO � PROCESSO DE FORMAÇÃO � VIA ÀCIDO MEVALÔNICO� ESTABILIDADE DO DIMETIL-ALIL-DIFOSFATO (DMAPP)� VIA FOSFATO DE DEXICELULOSE� MONOTERPENOS E SESQUITERPENOS� DITERPENOS� TRITERPENOS� TETRATERPENOS� ONDE ENCONTRAR� ÓLEOS VOLÁTEIS� MÉTODOS DE EXTRAÇÃO� APLICAÇÕES� REFERÊNCIAS BIBLIOGRÁFICAS
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TERPENOS
FORMADOS POR SUCESSIVAS UNIDADES DE ISOPROPENO
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TERPENÓIDE
TERPENOS CONTENDO OXIGÊNIO COMO ÀLCOOIS, ALDEÍDOS OU CETONAS.
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EXEMPLOS DE TERPENOS
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EXEMPLOS DE TERPENOS
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EXEMPLOS DE TERPENOS
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EXEMPLOS DE TERPENOS
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CLASSIFICAÇÃO DOS TERPENOS
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FORMAÇÃO DOS TERPENOS
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ESTABILIDADE DO DMAPP
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MONOTERPENOS E SESQUITERPENOS
� BAIXA SOLUBILIDADE;
�OXIDAM RAPIDAMENTE;
� POLIMERIZAM
� COMPÕEM ÓLEOS ESSENCIAIS.
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MONOTERPENOS
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SESQUITERPENOS
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DITERPENOS
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TRITERPENOS
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TETRATERPENOS
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Unidades isoprênicas são encontradas em:
�Quinonas;
�Fenóis e Álcoois;
�Vitamina A obtida a partir do β-caroteno;
�Óleos voláteis.
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Óleos Voláteis
� Formados por terpenos;
� Encontrados em flores, frutos, sementes, raízes, folhas, pêlos glandulares e canais oleíferos;
� Apresentam funções ecológicas.
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Métodos de Extração
� Arraste por vapor de água;
� Extração com solventes orgânicos;
� Prensagem;
� CO2 Supercrítico.
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Aplicações
� Solventes;
�Aromas e fragrâncias;
� Indústria farmacêutica e farmoquímica;
� Indústria de fungicidas
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REFERÊNCIAS BIBLIOGRÁFICAS
� Dewick, Paul M. The Mevalonate And DeoxyxylulosePhosphate Pathways: Terpenoids And Steroids.Medicinal Natural Products. John Wiley & Sons, Ltd. 2002. Second Edition.University of Nottingham, UK. Páginas 167 a 231.Capítulo 5.
� Júnior, Cláudio Viegas. Terpenos com atividade inseticida: uma alternativa para o controle químico de insetos. Química Nova, vol.26, nº 3. São Paulo, 2003.