[Studies on the chemical constituents of Uncaria yunanensis Hsia. C.C].
OBJECTIVE
To research the chemical constituents from dried roots of Uncaria yunanensis Hsia. C. C.


METHODS
Modern chromatography was used to isolate chemical components. Their structure were identified by spectral analysis.


RESULTS
Seven compounds were isolated and identified as 3 beta, 6 beta, 19 alpha-trihydroxyurs-12-en-28 oic acid (I), 23-nor-24-esomethylene-3 beta, 6 beta-19 alpha-trihydroxyurs-12-en-28 oic acid (II), 3-oxo-6 beta, 19 alpha-dihydroxyurs-12-en-28 oic acid (III), oleanic acid (IV), 5,7,3',4'-tetrahydroxy-flavan-3-ol (V), beta-yohimbine (VI) and diangoutengjian I (VII).


CONCLUSIONS
All of the above compounds were isolated for the first time from the root of this plant. Among them, compound VII is a new one.
Tao
Z Y
ZY
College of Pharmacy Second Military University, Shanghai 200433, China. taochaoyang@21cn.com
Yi
Y H
YH
Xu
Q Z
QZ
D026121:Indole Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D008968:Molecular Conformation; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification; D010946:Plants, Medicinal / Q000737:chemistry*; D032070:Uncaria / Q000737:chemistry*; D015016:Yohimbine / Q000737:chemistry / Q000302:isolation & purification
D026121:Indole Alkaloids; C475965:diangoutengjian I; D015016:Yohimbine; D009828:Oleanolic Acid