Commicarpiflavonol Glucosides A and B; Two New 5-Deoxyflavonol Glucosides from Commicarpus grandiflorus

Abstract

The phytochemical investigation of the aerial parts of Commicarpus grandiflorus (Standl.) resulted in the isolation of two new flavonol 3-O-glucosides, commicarpiflavonol glucoside A (1) and commicarpiflavonol glucoside B (2), along with the known compounds β-sitosterol (3) and betulinic acid (4). The structures of the isolated compounds have been elucidated by extensive 1D (1H, 13C) and 2D (COSY, HSQC, HMBC) NMR spectral data analysis, as well as high-resolution mass determinations.