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

页码：4783 / 4786

页数：4

共 12 条

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