摘 要 :从苦绳(Dregea sinensis var. corrugata)的根茎中分得一个新的C21-甾体甙成分,命名为苦绳甙甲(dregeoside A)。经光谱分析和化学反应证明,其结构为:苦绳甙元甲 3-O-3-O-甲基-6-去氧-β-D-阿洛吡喃糖(1→4)-β-D-夹竹桃吡喃糖(1→4)- β-D-磁麻吡喃糖1→4)-β-D-磁麻吡喃糖甙(drevogenin A 3-O-3-O-methyl-6-deoxy - β-D-allopyranosyl-(1→4)-β-D-oleandropyranosyl-(1→4)- β-D-cymaropyranosyl- (1→4)-β-D-cymaropyranoside).
Abstract:A new glycoside, named dregeoside, was isolated from the rhizome of Dregea sinensis var. corrugata (Asclepiadaceae). The structure of dregeoside A was deduced on the basis of chemical and spectral evidence as drevogenin A 3 -0-3-0 -methyl- 6 -deoxy- β-D-allopyranosyl-(1→4)-β-D-oleandropyranosyl-(1→4)- β-D-cymaropyranosyl- (1→4)-β-D-cymaropyranoside).