Crotalionosides A-C, Three New Megastigmane Glucosides, Two New Pterocarpan Glucosides and a Chalcone C-Glucoside from the Whole Plants of Crotalaria zanzibarica
作者:Junko Shitamoto、Katsuyoshi Matsunami、Hideaki Otsuka、Takakazu Shinzato、Yoshio Takeda
DOI:10.1248/cpb.58.1026
日期:——
Okinawa Islands, three new megastigmane glucosides, named crotalionosides A-C, two new pterocarpan glucosides and a chalcone C-glucoside were isolated together with two known flavonoid glycosides and one known megastigmane glucoside. The structures of the new compounds were elucidated by a combination of spectroscopic analyses. The absolute configurations of allenic megastigmane glucosides were determined
从冲绳群岛猪屎豆叶的MeOH提取物的1-BuOH可溶级分中,分离出三种新的大麦角葡糖苷,称为猪八糖苷AC,两个新的翼果葡糖苷和一个查尔酮C-葡糖苷以及两个已知的类黄酮糖苷和一种已知的大麦苷。通过光谱分析的组合阐明了新化合物的结构。通过应用改良的Mosher's方法测定异位大麦角菌素苷的绝对构型。烯丙基部分的那些是通过解释衍生自瓜类化合物A和B的还原产物的圆二色性(CD)光谱确定的。