[Studies on chemical constituents from EtOAc fraction of Sorbus tianschanica].
OBJECTIVE
To study the chemical constituents of Sorbus tianschanica.


METHODS
The compounds were isolated and purified by recrystallization and chromatography with silica gel and resin. Their structures were identified by physicochemical properties and spectral analysis.


RESULTS
Seven compounds were isolated from the EtOH extraction and six structures were identified as benzoic acid (1), benzyl-O-beta-D-glucopyranoside (2), ursolic acid (3), 2alpha-hydroxyursolic acid (4), hyperoside (5), quercetin-3-O-glucoside (6).


CONCLUSIONS
Compounds 1-5 were isolated from S. tianschanica for the first time.
Chang
Junmin
J
College of Pharmacy, Xinjiang Medical University, Urumuqi 830011, China. cjmcjn2471@yahoo.com.cn
Yang
Lingling
L
Rena
Kasimu
K
D000085:Acetates / Q000737:chemistry*; D009930:Organic Chemicals / Q000032:analysis / Q000302:isolation & purification; D031994:Sorbus / Q000737:chemistry*
D000085:Acetates; D009930:Organic Chemicals; C007650:ethyl acetate