Four new cassane diterpenes from the seeds of Caesalpinia minax

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• 作者：Peng Zhao ; Hongqiang Chen ; Hao Wang ; Jing Xu ; Meicheng Wang ; Yuli Wang ; Da-Qing Jin ; Yuanqiang Guo
• 关键词：Caesalpinia minax ; Diterpenes ; Cassane ; Caesalpines A&ndash ; D
• 刊名：Phytochemistry Letters
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：6
• 期：4
• 页码：606-609
• 全文大小：419 K

文摘

In our survey on the chemical composition of traditional Chinese medicines to further elucidate their chemical substances for the treatment of diseases, we investigated the chemical constituents of the seeds of plants Caesalpinia minax. The investigation led to the isolation and identification of four new cassane diterpenes, caesalpines A-D (1-4). Their structures were elucidated on the basis of extensive 1D and 2D NMR (COSY, HMQC, HMBC, and NOESY) and mass (ESIMS and HR-ESIMS) spectroscopic data analyses. The phytochemical results imply that cassane diterpenes are maybe regarded as the characteristic constituents of C. minax.