New triterpenoids from the stems and leaves of Panax ginseng.
Three new dammarane-type triterpene saponins ginsenosides Rh(18) (1), Rh(19) (3) and Rh(20) (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.
State Key Laboratory of Natural and Biomimetic Drugs (Peking University), Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University Health Science Center, Peking University Beijing, China. keli219@yahoo.com.cn
Ke-Ke
KK
Li
Xin-Bao
XB
Yang
Xiu-Wei
XW
Yang
Jian-Xun
JX
Liu
Xiao-Jie
XJ
Gong
D036145:Ginsenosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D005894:Panax / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry
D036145:Ginsenosides; D010936:Plant Extracts