Buxusoside, a Flavonoid Disaccharide from Buxus sinica

Abstract

A new flavonoid diglycoside named buxusoside (1), together with its aglycone chrysosplenol-D (2), as well as 4′, 5-dihydroxy-3,6,7-trimethoxyflavone (3) and 3′,4′,5-trihydroxy-3,6,7-trimethoxyflavone (4), were isolated from the 70% EtOH extract of the air-dried plant of Buxus sinica. Its structure was elucidated mainly by 1D and 2D NMR spectra.