Three New Flavone Glycosides from Drymaria diandra B1.
Supported by the National Natural Science Foundation of China (30260014) and Young Academic and Technical Leader Raising Foundation of Yunnan Province of China (YP0024).
Abstract
Abstract: In order to find new structural and biologically active compounds, the constituents from the whole plant of Drymaria diandra B1. (Caryophyllaceae) were investigated and three new flavone glycosides, named drymariatins B (1), C (2), and D (3), were isolated by solvent partition, Si gel, sephadex LH-20, and Rp-18 column chromatography. Using spectroscopic methods, including two-dimensional nuclear magnetic resonance analysis, the structures of these compounds were elucidated as 6-C-(2-deoxy-β-D-fucopyranosyl)-5,7,4′-trihydroxyl-flavone, 6-C-(2-deoxy-β-D-fucopyranosyl)-7-O-(β-D-glucopyranosyl)-5,4′-dihydroxyl-flavone, and 6-C-(3-keto-β-digitoxopyranosyl)-7-O-(β-D-glucopyranosyl)-5,4′-dihydroxyl-flavone.
(Managing editor: Wei WANG)
