Phytochemistry of Trattinnickia burserifolia, T. rhoifolia, and Dacryodes hopkinsii: Chemosystematic Implications
نویسندگان
چکیده
O estudo de Trattinnickia burserifolia levou ao isolamento dos triterpenos conhecidos ursanos α-amirenona, α-amirina, 3-epi-α-amirina, 3α,16β-diidroxiurs-12-eno; oleananos β-amirenona, βamirina, 3-epi-β-amirina, 3α,16β-diidroxiolean-12-eno; tirucalanos ácidos 3α-hidroxitirucal-8,24dien-21-óico, 3α-hidroxitirucal-7,24-dien-21-óico, e 3-oxotirucal-8,24-dien-21-óico; damaranos dammarenediol-II e 3α,20(S)-diidroxidamar-24-eno. Além desses foram ainda isolados o monoterpeno novo 2(S*)-fenilacetoxi-4(R*)-p-menta-1(7),5-dieno, e os triterpenos novos 3βfenilacetoxiurs-12-eno, 3β-fenilacetoxiolean-12-eno e 3β,16β,11α-triidroxiurs-12-eno. Os triterpenos de T. burserifolia, T. rhoifolia e Dacryodes foram analisados em mistura. Os espectros de RMN C mostraram que os principais triterpenos eram α-amirina e β-amirina em T. burserifolia; α-amirina, βamirina, 3-epi-α-amirina, 3-epi-β-amirina, lupenona, ácidos 3α-hidroxitirucal-8,24-dien-21-óico e 3α-hidroxitirucal-7,24-dien-21-óico em T. rhoifolia; α-amirina, β-amirina, lupeol, tirucalol, sitosterol e estigmasterol em D. hopkinsii. A quimiossistemática da tribo Protieae é discutida.
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