A new bibenzyl derivative from Bletilla striata
Han, G.-x.; Wang, L.-x.; Gu, Z.-b.; Zhang, W.-d.
Yao Xue Xue Bao 37(3): 194-195
2002
ISSN/ISBN: 0513-4870 PMID: 12579760 Document Number: 550860
To study the chemical constituents of Bletilla striata. Various column chromatographies with silica gel and Sephadex LH-20 were employed for the isolation and purification. The structures of the compounds were elucidated on the basis of spectral analyses and chemical methods. Three compounds were isolated from the roots of Bletilla striata (Thunb.) Reichb. f. and identified as 5-hydroxy-4-(p-hydroxybenzyl)-3'-3-dimethoxybibenzyl (I), schizandrin (II), 4,4'-dimethoxy-(1,1'-biphenanthrene)-2,2',7,7'-tetrol (III). Compound I is a new bibenzyl derivative and II was isolated from this plant for the first time.