Phytochemical study of the ethyl acetate extract of male Carica papaya flowers from Quảng Nam - Đà Nẵng

Abstract

Male Carica papaya flowers, one of natural materials, have manv pharmacology activities including anti cancer. Wc report here in the isolation and structural elucidation of known compounds. Eight flavonoids, kaempferol (1), kaempferol 3-O-α-L-rhamnopyranoside (2), kaempferol 3-O-β-D-glucopyranoside (3), kaempferol 3-O-β-L- arabinopyranoside (4), quercetin (5), quercitrin (6), quercetin 3-O-β-D-galactopyranoside (7) and myricitrin (8) were isolated from the ethyl acetate extract of male Carica papaya flowers. Their structures were determined by NMR, MS spectra and by comparing with the reported data.