143061-65-8

Quercetin 3-O-β-D-(6''-p-coumaroyl)glucopyranosyl(1→2)-α-L-rhamnopyranoside (Quercetin-3-O-[2-O-(6-O-p-hydroxyl-E-coumaroyl)-D-glucosyl]-(1→2)-L-rhamnoside) is one of the major antioxidants of Ginkgo biloba leaves[1].

ChEBI:Quercetin 3-O-alpha-L-[6'''-p-coumaroyl-beta-D-glucopyranosyl-(1->2)-rhamnopyranoside] is a quercetin O-glucoside that is quercetin substituted by a alpha-L-[6'''-p-coumaroyl-beta-D-glucopyranosyl-(1->2)-rhamnopyranosyl] residue at position 3 via a glycosidic linkage. Isolated from Ginkgo biloba, it exhibits antioxidant activity. It has a role as a metabolite and an antioxidant. It is a quercetin O-glucoside, a cinnamate ester and a disaccharide derivative. It is functionally related to a trans-4-coumaric acid.

[1] Ma H, et al. A powerful on line ABTS+-CE-DAD method to screen and quantify major antioxidants for quality control of Shuxuening Injection. Sci Rep.?2018 Apr 3;8(1):5441. DOI:10.1038/s41598-018-23748-x