Cotonoates A and B, new aromatic esters from Cotoneaster racemiflora

Abstract

Phytochemical investigation of the chloroform soluble fraction of the methanolic extract of Cotoneaster racemiflora resulted in the isolation of two new aromatic esters named cotonoates A (1) and B (2) along with the known compound methyl 3,4-dihydroxy-5-methoxybenzoate (3). The structures of the new compounds have been assigned on the basis of spectral analysis including ID and 2D NMR techniques. Compound 3 shows significant antioxidant and lipoxygenase inhibitory activities. © 2008 Verlag der Zeitschrift für Naturforschung, Tübingen.