Gracilipene: A heterocyclic seco-trisnor-oleanane from Calophyllum gracilipes (Guttiferae)

被引：9
作者：
Cao, SG
Sim, KY
Goh, SH
Xue, F
Mak, TCW
机构：
[1] NATL UNIV SINGAPORE,DEPT CHEM,SINGAPORE 119260,SINGAPORE
[2] CHINESE UNIV HONG KONG,DEPT CHEM,SHATIN,NEW TERRITORIES,HONG KONG
来源：
TETRAHEDRON LETTERS | 1997年 / 38卷 / 27期
关键词：
D O I：
10.1016/S0040-4039(97)01032-0
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Gracilipene, a novel heterocyclic trisnor-triterpene from the leaves of Calophyllum gracilipes, shows an unprecedented rearranged seco-trisnor-oleanane structure with a dihydropyran ring-A, as determined by NMR spectra and single crystal X-ray analysis. Other known triterpenes isolated include friedelin, lupeol, lupenone, beta-sitosterol, stigmasterol, 3 beta-hydroxy-30-norlupan-20-one, lupane-3 beta,20-diol, (20R)-3 beta-hydroxylupan-29-oic acid, betulinic acid and squalene. (C) 1997 Elsevier Science Ltd. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：4783 / 4786
页数：4
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