Three biflavonoids from ethanol extract of the root of Daphne genkwa
- VernacularTitle:芫花根醇提物中三个新的双黄酮类化合物
- Author:
Weifa ZHENG
;
Feng SHI
- Publication Type:Journal Article
- Keywords:
roots of Daphne genkwa;
biflavonoids;
Thymelaeaceae
- From:
Acta Pharmaceutica Sinica
2005;40(5):438-442
- CountryChina
- Language:Chinese
-
Abstract:
Aim To investigate the chemical constituents of the secondary metabolites of the roots of Daphne genkwa. Methods The roots of D. genkwa were extracted with 95% ethanol at 60 - 70 ℃ for 7 days to obtain the crude extract. The crude extract was purified by silica gel and Sephadex LH-20 column chromatography as well as the HPLC techniques. The structures of the isolates were elucidated by combined spectroscopic methods including 1D and 2D NMR, MS, UV, IR and CD. Results Three new biflavonoids were isolated from the ethanol extract of the roots of D. genkwa and their structures were identified as daphnodorin H-3-methyl ether (1), daphnodorin H-3"-methyl ether (2) and daphnodorin G-3"-methyl ether (3). Conclusion Compounds 1, 2 and 3 are three new biflavonoids.
