Cucurbitane-Type Triterpenoids from the Stems of Momordica charantia

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• 作者：Chi-I Chang ; Chiy-Rong Chen ; Yun-Wen Liao ; Hsueh-Ling Cheng ; Yo-Chia Chen ; Chang-Hung Chou
• 刊名：Journal of Natural Products
• 出版年：2008
• 出版时间：August 2008
• 年：2008
• 卷：71
• 期：8
• 页码：1327-1330
• 全文大小：120K
• 年卷期：v.71,no.8(August 2008)
• ISSN：1520-6025

文摘

Four new cucurbitane-type triterpenes, cucurbita-5,23(E)-diene-3β,7β,25-triol (1), 3β-acetoxy-7β-methoxycucurbita-5,23(E)-dien-25-ol (2), cucurbita-5(10),6,23(E)-triene-3β,25-diol (5), and cucurbita-5,24-diene-3,7,23-trione (6), together with four known triterpenes, 3β,25-dihydroxy-7β-methoxycucurbita-5,23(E)-diene (3), 3β-hydroxy-7β,25-dimethoxycucurbita-5,23(E)-diene (4), 3β,7β,25-trihydroxycucurbita-5,23(E)-dien-19-al (7), and 25-methoxy-3β,7β-dihydroxycucurbita-5,23(E)-dien-19-al (8), were isolated from the methyl alcohol extract of the stems of Momordica charantia. The structures of the new compounds were elucidated by spectroscopic methods.