作者:Fang-Yu Yuan、Xiao-Ling Wang、Tian Wang、Tao Shen、Dongmei Ren、Hongxiang Lou、Xiao-Ning Wang
DOI:10.1021/acs.jnatprod.9b00013
日期:2019.6.28
Three new C21 pregnane steroids, chonemorphols A-C (1, 3, and 4), 11 new C21 steroidal glycosides, chonemorphosides A-K (2 and 5-14), and 11 known compounds (15-25) were obtained from the vines and leaves of Chonemorpha megacalyx Pierre. Their structures were established using extensive spectroscopic data. The X-ray crystallographic data of 1 and 3 permitted definition of their absolute configurations
从葡萄树的藤蔓和叶子中获得了三种新的C21孕激素类固醇,苯并吗啡AC(1、3和4),11种新的C21类固醇糖苷,苯并吗啡苷AK(2和5-14)和11种已知化合物(15-25)。巨大花萼皮埃尔(Chonemorpha megacalyx)使用大量的光谱数据确定了它们的结构。1和3的X射线晶体学数据允许定义其绝对构型。值得注意的是,1和2具有罕见的6/5/6/5/5融合的甾体环系统。化合物7对几种癌细胞显示出显着的细胞毒性,IC50值为2.0-3.6μM。