Studies on the Acyl Glycosides from Leucoseptrum japonicum (Miq.) Kitamura et Murata

Abstract

Two new acyl glycosides, leucosceptosides A (IV) and B (V), have been isolated from Leucosceptrum japonicum (Miq.) Kitamura et Murata, together with martynoside (III), acteoside (I) and an acteoside isomer (II). The structures of IV and V were determined to be 2-(3,4-dihydroxyphenylethyl) 1-O-α-l-rhamnopyranosyl-(1→3)-β-d-(4-O-caffeyl)-glucopyranoside and 2-(3-hydroxy-4-methoxyphenylethyl) 1-O-α-l-rhamnopyranosyl-(1→ 3)-O-[β-d-apiofuranosyl (1→6)]-β-d-glucopyranoside, respectively, on the basis of chemical and spectral data. © 1982, The Pharmaceutical Society of Japan. All rights reserved.