Brauhenefloroside C

Abstract

Phytochemical investigations of the fruits of Stocksia brauhica (Sapindaceae) resulted in the isolation of a new acylated flavone glycoside. The structure of the new compound brauhenefloroside C (1) was established as 7-[(6-O-(2E-3-(4-hydroxyphenyl)-1-oxo-2-propenyl)-β-D-glucopyranosyl)] -(1→2)-[(6-deoxy-α-L-mannopyranosyl)]-(1→3)-[(6-deoxy-α-L- mannopyranosyl]-oxy)-5-hydroxy-2-(4′-hydroxy-phenyl)-4H-1-benzopyran. The structure elucidation of the new compound was based primarily on ID and 2D NMR analysis, including COSY, 2D J-resolved, HMBC and HMQC correlations. Show more