Two new oxypregnane-oligoglycosides named calotroposides A (1) and B (2) have been isolated from the root of Calotropis gigantea (Asclepiadaceae), an Indonesian medicinal plant, and their chemical structures have been elucidated by chemical and spectroscopic methods as 12-O-benzoyllineolon 3-O-β-D-cymaropyranosyl(1→4)-β-D-oleandropyranosyl(1→4)-β-D-oleandropyranosyl(1→4)-β-D-cymaropyranosyl(1→4)-β-D-cymaropyranoside and 12-O-benzoylde-acetylmetaplexigenin 3-O-β-D-cymaropyranosyl(1→4)-β-D-oleandropyranosyl(1→4)-β-D-oleandropyranosyl(1→4)-β-D-cymaropyranosyl(1→4)-β-D-cymaropyranoside, respectively.
从印度尼西亚药用植物Calotropis gigantea(夷果科)的根中分离出两种新型氧孕烷
寡糖苷,分别命名为calotroposides A (1) 和B (2)。通过
化学和光谱方法阐明了它们的
化学结构,分别为12-O-苯甲酰林诺酮 3-O-β-D-
醋酸甲酰基(1→4)-β-D-油菜糖基(1→4)-β-D-油菜糖基(1→4)-β-D-
醋酸甲酰基(1→4)-β-D-
醋酸甲酰基苷和12-O-苯甲酰-去乙酰基甲基
生物雌激素 3-O-β-D-
醋酸甲酰基(1→4)-β-D-油菜糖基(1→4)-β-D-油菜糖基(1→4)-β-D-
醋酸甲酰基(1→4)-β-D-
醋酸甲酰基苷。