Three new lignan glycosides were isolated from the bark of Eucommia ulmoides OLIV. (Eucommiaceae). Their structures were established as (-)-olivil 4', 4"-di-O-β-D-glucopyranoside (1), (+)-1-hydroxypinoresinol 4', 4"-di-O-β-D-glucopyranoside (2) and (+)-medioresinol 4'-O-β-D-glucopyranoside (named eucommin A) (3), based on chemical evidence and spectroscopic studies. A known lignan glycoside, (+)-syringaresinol O-β-D-glucopyranoside (4) was also isolated.
从杜仲(Eucommia ulmoides OLIV.(杜仲科)树皮中分离出三种新的
木质素苷。根据
化学证据和光谱研究,它们的结构被确定为(-)-olivil 4',4"-di-O-β-
D-吡喃葡萄糖苷(1)、(+)-1-hydroxypinoresinol 4',4"-di-O-β-
D-吡喃葡萄糖苷(2)和(+)-medioresinol 4'-O-β-
D-吡喃葡萄糖苷(命名为杜仲素 A)(3)。此外,还分离出一种已知的
木质素苷,(+)-syringaresinol O-β-D-glucopyranoside(4)。