New triterpenoids from the stems and leaves of Panax ginseng

Three new dammarane-type triterpene saponins ginsenosides Rh18 (1), Rh19 (3) and Rh20 (4), along with two new triterpene sapogenins 12β,23(R)-epoxydammara-24-ene-3β,6α,20(S)-triol (2) and dammara-(20E)22,25-diene-3β,6α,12β,24S-tetrol (5) were isolated from the stems and leaves of Panax ginseng C. A. Mey. Their structures were elucidated on the basis of spectral evidence and comparisons with literature data.

Five new triterpenoid compounds, namely ginsenosides Rh18 (1), Rh19 (3), Rh20 (4) and 12β,23(R)-epoxydammara-24-ene-3β,6α,20(S)-triol (2) as well as dammara-(20E)22,25-diene-3β,6α,12β,24S-tetrol (5) were isolated from the stems and leaves of Panax ginseng.201