TRITERPENOIDS FROM THE FRESH FRUIT COATS OF AZADIRACHTA-INDICA

被引：21

作者：

SIDDIQUI, BS

GHIASUDDIN

FAIZI, S

SIDDIQUI, S

机构：

[1] H.E.J. Research Institute of Chemistry, University of Karachi, Karachi

来源：

PHYTOCHEMISTRY | 1992年 / 31卷 / 12期

关键词：

AZADIRACHTA-INDICA; MELIACEAE; NEEM FRUIT COATS; DEGRADED TRITERPENOIDS; 5-ALPHA; 13-ALPHA-ANDROSTONE AND 5-ALPHA; 13-ALPHA-17-OXA-ANDROSTONE DERIVATIVES;

D O I：

10.1016/0031-9422(92)80457-P

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 [生物化学与分子生物学]; 081704 [应用化学];

摘要：

Three novel degraded triterpenoids, desfurano-azadiradione [7alpha-acetoxy-4,4,8-trimethyl-5alpha-(13alphaMe)-androsta-1,14-dien-3,16-dione],7alpha-acetoxy-4,4,8-trimethyl-5alpha-(13alphaMe)-17-oxa-androsta-1,14-dien-3,16-dione and 7alpha-acetoxy-4, 4,8-trimethyl-5alpha- 1 7-oxa-androsta- 1, 14-dien-3,16-dione which were isolated from the neutral fraction of the ethanolic extract of the fresh, undried uncrushed ripe neem fruit coats of Azadirachta indica are described. Their structures were elucidated through spectroscopic methods. It is the first report of the isolation of such degraded triterpenoids of this skeleton from any plant source.

引用

页码：4275 / 4278

页数：4

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