Sigler P, Saksena R, Deepak D, Khare A
Department of Chemistry, Lucknow University, India.
Phytochemistry. 2000 Aug;54(8):983-7. doi: 10.1016/s0031-9422(99)00611-1.
Two novel pregnane glycosides, denicunine (1) and heminine (4), have been isolated from the dried stem of Hemidesmus indicus R.Br. (family: Asclepiadaceae). Chemical transformations and spectroscopic evidence viz: 1H and 13C NMR spectroscopy and FABMS are consistent with the structures calogenin 3-O-3-O-methyl-beta-D-fucopyranosyl-(1-->4)-O-beta-D-oleandropyranosi de and calogenin 3-O-beta-D-cymaropyranosyl-(1-->4)-O-beta-D-digitoxopyranoside+ ++, respectively.
从印度牛弥菜（萝摩科）干燥茎中分离出两种新的孕甾糖苷，去尼库宁（1）和海米宁（4）。化学转化及光谱证据，即1H和13C核磁共振光谱以及快原子轰击质谱，分别与结构卡罗皂苷元3 - O - 3 - O - 甲基 - β - D - 岩藻吡喃糖基 - （1→4） - O - β - D - 夹竹桃吡喃糖苷和卡罗皂苷元3 - O - β - D - 磁麻吡喃糖基 - （1→4） - O - β - D - 洋地黄毒吡喃糖苷相符。
