Polyphenolic compounds isolated from the leaves of Myrtus communis

Abstract

Four hydrolyzable tannins [oenothein B (1), eugeniflorin D2 (2), and tellimagrandins I (3) and II (4)], two related polyphenolic compounds [gallic acid (5) and quinic acid 3,5-di-O-gallate (6)], and four myricetin glycosides [myricetins 3-O-β-D-xyloside (7), 3-O-β-D-galactoside (8), 3-O-β-D-galactoside 6″-O-gallate (9), and 3-O-α-l-rhamnoside (10)] were isolated from the leaves of Myrtus communis. Antioxidant activities of the isolated compounds were evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay. © 2008 The Japanese Society of Pharmacognosy and Springer.