Four steroids were isolated from the ethyl acetate extract of the roots of Cynanchum otophyllum. Their structures were identified as qinyangshengenin-3-O-β-D-oleandropyranosyl-(1→4)-β-D-oleandropyranosyl-(1→4)-β-D-cymaropyranosyl-(1→4)-β-D-cymaropyranoside (1), gagamine (2), otophylloside B (3), and caudatin (4). Compound 1 is a new steroidal glycoside, and the structures of these compounds were established on the basis of chemical and spectroscopic methods.
从牛皮消(Cynanchum otophyllum)根部的
乙酸乙酯提取物中分离得到4个
甾体化合物,其结构被鉴定为:青阳参苷(qinyangshengenin-3-O-β-D-oleandropyranosyl-(1→4)-β-D-oleandropyranosyl-(1→4)-β-D-cymaropyranosyl-(1→4)-β-D-cymaropyranoside,1)、加加明(gagamine,2)、牛皮消苷B(otophylloside B,3)和牛皮消苷元(caudatin,4)。化合物1是一种新的甾体糖苷,这些化合物的结构是通过
化学和光谱方法确定的。