Studies on the Constituents of Cistanchis Herba. VIII

Abstract

A new phenylethanoid glycoside, cistanoside G (I), was isolated from Cistanchis Herba, the whole plant of Cistanche salsa (C.A. Mey.) g. Beck (Orobanchacea), along with salidroside (p-hydroxyphenethyl .beta.-D-glucoside), syringin and (+)-pinoresinol. The structure of cistanoside G was determined to be 2-(4-hydroxyphenyl)ethyl O-.alpha.-L-rhamnopyranosyl-(1 .fwdarw. 3)-.beta.-D-glucopyranoside (I) on the basis of chemical and spectral data.