Study on biflavonoids from stem bark of Daphne giraldii / 中草药

ABSTRACT

Object To isolate and identify the biflavonoids from the stem bark of Daphne giraldii Nitsche. Methods The flavonoids were isolated and purified by column chromatography on silica gel and Sephadex LH-20. Their structures were determined by spectroscopic methods, including IR, 1HNMR, 13 CNMR, HMBC and FAB-MS.Results Four biflavonoids daphnodorins A-D 1 (Ⅰ-Ⅳ) were isolated from the stem bark of D. giraldii. Conclusion The above four biflavonoids were isolated from the title plant only.