An ether extract of the wood of Protium tenuifolium furnished two lignans characterized as (+)-(2S,3S)-2-(3",4"-methylenedioxybenzyl)-3-(3',4'-methylenedioxyacetophenone)-butyrolactone [1] and a mixture of (-)-cubebin epimers. This is the first isolation of 1 as a natural product.
RESUMO -Dos extratos etéreo e etanólico da casca da madeira de Protium paniculatum Engl. foram isolados á e β-AMIRINA (0,012%), β-sitosiero! e estigmasterol (0,003%) e o ácido 3,3'-di-0-metilelágico (0,093%0). A presença do ácido 3,3',4-tri-0-metileIágico foi postulada com base na análise do espectro de massas.Palavras-chave: Burseraceac, Protium, terpenoídes, ácido 3,3'-di-o-metilelágico e ácido 3,3',4-tri-o-metilelágico.
Chemical Constituents of Protium paniculatum (Burseraceae).SUMMARY -á-e β-myrin (0,012%), β-sitosterol and stigmasterol (0.003%),3,3'-di-0-methylellagic (0.093%) acid were isolated from the bark wood of Protium paniculatum.The presence of 3.3',4-tri-0-methylellagic acid was postulate on the of mass spectral analyses.
Do cerne de Guarea carinata foi isolado como principal constituinte um triterpeno di-acetilado (I). do grupo dos protolimonóides, derivado do apo-tirucalol e que mostrou atividade no controle biológico das larvas de Urbanus acawoioa(WILLIAMS, R. C, 1926) (Lepidoptera Hesperiidac).
RESUMO -Dos extratos etéreo e etanólico da casca da madeira de Protium paniculatum Engl. foram isolados a-e β-amirina (0,012%), β-sitosterol e estigmasterol (0,003%) e o ácido 3,3'-di-O-metilelágico (0,093%0). A presença do ácido 3,3',4-tri-O-metilelágico foi postulada com base na análise do espectro de massas.Palavras-chave: Burseraceae, Protium, terpenóides, ácido 3,3'-di-0-metilelágico e ácido 3,3',4-tri-O-metilelágico.
Chemical Constituents of Protium paniculatum (Burseraceae).SUMMARY -α-and β-amyrin (0,012%), β-sitosterol and stigmasterol (0.003%),3,3'-di-Omethylellagic acid (0.093%) were isolated from the bark wood of Protium paniculatum. The pres ence of 3,3',4-tri-O-methylellagic acid was postulate on the basis of mass spectral analyses.
RESUMO -Da casca da madeira de Guarea trichilioides foram isoladas e identificadas através de métodos espectrométricos as antraquinonas crisofanol e fisciona e das sementes o limonóide 7-desacetoxi-7-hidroxiazadirona. Da fração lipofílica das sementes foram ainda identificados por co-injeçao de padrões, através de cromatografia gasosa os ácidos esteárico, palmítico e linolênico.Palavras-Chave: Meliaceae, Guarea trichilioides, Limonóides, Antraquinonas. Wiley/NBS.
Chemical Study of Fruits and Steam Bark of Guarea trichilioides (Meliaceae).ABSTRACT -In this paper we related the identification and isolation of stearic, linolenic and palmitic acids and the isolation and structural determination of the 7-desacetoxy-7-hidroxyazadirone present in the hexan extract of the fruits of Guarea trichilioides. From the chloroform extrat of steam bark were isolated and identificated the antraquinones: chrysophanol and physcion.
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