Abstract
A new dammarane-type triterpene monoglucoside, named isoginsenoside-Rh3, has been isolated from the fruits of Panax ginseng C. A. Mey, together with eight known analogs, ginsenoside-Rb1, -Rb2, -Rc, -Rd, -Re, -Rg1, -Rh1, -Rh2. On the basis of chemical and physicochemical evidence, the structure of isoginsenoside-Rh3 has been elucidated as 3-O-β-d-glucopyranosyl-dammarane-(E)-20(22),24-diene-3β,12β-diol (1).