PENTACYCLIC TRITERPENOIDS FROM THE LEAVES OF PLUMERIA-OBTUSA

被引：15
作者：
SIDDIQUI, S
SIDDIQUI, BS
NAEED, A
BEGUM, 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：
PLUMERIA-OBTUSA; APOCYNACEAE; TRITERPENOIDS; 3-BETA-HYDROXY-24-P-E-COUMAROYLOXYURS-12-EN-28-OIC ACID; 3-BETA-HYDROXY-27-P-Z-COUMAROYLOXYURS-12-EN-30-OIC ACID;
D O I：
10.1016/0031-9422(92)80458-Q
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Nine pentacyclic triterpenoids along with a coumarin have been isolated from the fresh, undried and uncrushed spring leaves of Plumeria obtusa. The new triterpenes obtusin and obtusilic acid have been characterized as the 24-E and 27-Z p-coumaric esters of the novel 3beta,24-dihydroxyurs-12-en-28-oic acid and 3beta,27-dihydroxyurs-12-en-30-oic acid, respectively, through chemical and spectral studies while the other eight compounds have been identified as known kaneroside, oleandrin, alpha-amyrin, neriucoumaric acid, isoneriucoumaric acid, alphitolic acid, oleanonic acid, methyl p-E-coumarate and scopoletin hitherto unreported from this source.
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页码：4279 / 4283
页数：5
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