ent-Kaurane Glycosides from Tricalysia okelensis

Abstract

Tricalysiosides V and W, two new ent-kaurane glycosides with an acylated disaccharide moiety at the C-3 position, were isolated from the roots of Tricalysia okelensis and their structures established by spectroscopic and chemical methods as ent-kauran-3α,16α,17-triol-19-al 3-O-[5-O-vanilloyl-β-D-apiopyranosyl(1→6)]-β-D-glucopyranoside (1) and ent-kauran-3α,16α,17-triol-19-al 3-O-[5-O-E-sinapoyl-β-D-apiopyranosyl(1→6)]-β-D-glucopyranoside (2).