Structure of Mimengosides A and B, New Triterpenoid Glycosides from Buddlejae Flos Produced in China.
作者:Ning DING、Shoji YAHARA、Toshihiro NOHARA
DOI:10.1248/cpb.40.780
日期:——
Two new triterpenoid glycosides, named mimengosides A (1) and B (2), along with acteoside (3) were isolated from the Buddlejae Flos (flower and bud of Buddleja officinalis). The structures of 1 and 2 were determined as 3-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→3)-[β-D-glucopyranosyl-(1→2)-β-D-fucopyranoside of 16-dehydroxysaikogenin G and that of 3, 23, 28-trihydroxy-11-methoxy-olean-12-ene, respectively, by spectral and chemical methods.
从佛手花(Buddleja officinalis 的花和花蕾)中分离出了两种新的三萜类苷,分别命名为含羞草苷 A(1)和 B(2),以及猕猴桃苷(3)。通过光谱和化学方法,确定了 1 和 2 的结构分别为 16-脱羟基海柯吉宁 G 的 3-O-α-L-鼠李糖基-(1→4)-β-D-吡喃葡萄糖基-(1→3)-[β-D-吡喃葡萄糖基-(1→2)-β-D-吡喃葡萄糖苷]和 3、23、28-三羟基-11-甲氧基-油菜素-12-烯。