来自印度牛弥菜的孕烷糖苷。

Pregnane glycosides from Hemidesmus indicus.

作者信息

Deepak D, Srivastava S, Khare A

机构信息

Department of Chemistry, University of Lucknow, India.

出版信息

Phytochemistry. 1997 Jan;44(1):145-51. doi: 10.1016/s0031-9422(96)00393-7.

DOI:10.1016/s0031-9422(96)00393-7

PMID:8983217

Abstract

Three new pregnane oligoglycosides, medidesmine, hemisine and desmisine isolated from the plant Hemidesmus indicus were identified as sarcostin-3-O-alpha-D-glucopyranosyl (1 --> 4)-O-beta-D-digitoxopyranosyl (1 --> 4)-O-beta-D-oleandropyranoside, calogenin-3-O-beta-D-cymaropyranosyl (1 --> 4)-O[3-O-methyl]beta-D-glucopyranosyl (1 --> 4)-O-beta-D-glucopyranosyl (1 --> 4)-O-beta-D-cymaropyranoside and calogenin-3-O-beta-D-xylopyranosyl (1 --> 4)-O-beta-D-digitoxopyranosyl (1 --> 4)-O-beta-D-xylopyranosyl (1 --> 4)-O-beta-D-digitoxopyranoside, respectively, with the help of FAB-MS, EI-MS, 1H and 13C NMR spectroscopy, along with chemical transformations.

摘要

从植物印度牛弭藤中分离出的三种新孕甾寡糖苷，即medidesmine、hemisine和desmisine，分别被鉴定为sarcosin - 3 - O -α - D - 吡喃葡萄糖基(1→4)-O -β - D - 洋地黄毒糖基(1→4)-O -β - D - 夹竹桃糖苷、calogenin - 3 - O -β - D - cymaropyranosyl(1→4)-O[3 - O - 甲基]β - D - 吡喃葡萄糖基(1→4)-O -β - D - 吡喃葡萄糖基(1→4)-O -β - D - cymaropyranoside和calogenin - 3 - O -β - D - 吡喃木糖基(1→4)-O -β - D - 洋地黄毒糖基(1→4)-O -β - D - 吡喃木糖基(1→4)-O -β - D - 洋地黄毒糖苷，借助快原子轰击质谱(FAB - MS)、电子轰击质谱(EI - MS)、氢核磁共振(1H NMR)和碳核磁共振(13C NMR)光谱以及化学转化得以鉴定。