A new diterpene glycoside from the stem bark of acanthopanax trifoliatus
Acanthopanax trifoliatus (L.) Merr. (Aralia- ceae) is distributed in the North of Vietnam and tradi-tionally used in the South-East Asia (Loi, 2001; Chi, 1997) as a drug with a ginseng-like activity. Lupane-triterpene carboxylic acids and a lupane-triterpene glycoside were isolated from the leaves of A. trifoliatus (Ty et al., 1984; Leschewski et al., 1985; Yook et al., 1998). As part of an ongoing investigation of the chemical constituents of this plant, herein we describe the isolation and structure of a new diterpene glycoside ent-kauran-16 ,17-dihydroxy-19-oic acid 16-O- -D-glucopyranosyl ether 19-O- -D- glucopyranosyl ester.
