[Studies on triterpenoid constituents from Rabdosia japonica var. galaucocalyx].
OBJECTIVE
To study the chemical constitutes in Rabdosia japonica var. galaucocalyx .


METHODS
The compounds were isolated by nomal phase silica gel chromatography. The structures were identified by physical and spectral data.


RESULTS
Nine triterpenoids were isolated and identified as friedelin (I), 3beta, 28-dihydroxy-ursane (II), ursolic acid (III), 3beta-acetyloxy-ursolic acid (IV), 2alpha, 3alpha-dihydroxy-urs-12-en-28-oic acid (V), 2alpha, 3alpha, 23-trihydroxy-urs-12-en-28-oic acid (VI), oleanic acid (VII), beta-sitosterol (VIII), daucousterol (IX).


CONCLUSIONS
Compounds I, II, IV, V and VI were isolated from R. japonica var. galaucocalyx for the first time.
Wang
Fu-Dong
FD
State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Ding
Lan
L
Wang
Han-Qing
HQ
D037602:Isodon / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D000094042:Lupanes
D014315:Triterpenes; C060796:friedelin; D000094042:Lupanes