Chemical constituents from Zhuang medicine Dalbergia benthami (I) / 中草药

ABSTRACT

Objective: To study the chemical constituents of Zhuang medicine Dalbergia benthami. Methods: The compounds were isolated and purified by silica gel, Sephadex LH-20 chromatography, HPLC and so on. The structures of the compounds were identified on the basis of chemical and spectral methods. Results: Fourteen compounds were isolated from the ethanol extract of Dalbergia benthami and identified as 4'-hydroxy-6-hydroxymethyl-5,7-dimethoxy isoflavone (1), β-sitosterol (2), daucosterol (3), stigmasterol (4), robustin acid (5), robustin (6), 4-hydroxy-3-(3'-hydroxy-4'-methoxyphyl)-5-methoxy-2″,2″-dimethylpyrano (5″,6″6,7)coumarin (7), robustin methyl ether (8), methyl robustate (9), 4'-hydroxy-5,7-dimethoxy-6-(3-methyl-2-butenyl)-isoflavone (10), formononetin (11), pseudobaptigenin (12), calycosin (13), and stigmasterol-3-O-β-D-glucopyranoside (14). Conclusion: Compound 1 is a new compound named dalbergibenthamone, and all compounds are isolated from this plant for the first time.