[Studies on chemical constituents from leaves of Cassia alata].
OBJECTIVE
To isolate and identify chemical constituents of Cassia alata.


METHODS
Compounds were separated and purified by column chromatography with silica gel and Sephadex LH-20, elucidated by spectroscopic methods including 1D and 2D NMR, IR and MS techniques.


RESULTS
Twelve compounds were isolated from C. alata, which were identified as chrysoeriol (1), kaempferol (2), quercetin (3), 5,7,4'-trihydroflavanone (4), kaempferol-3-O-beta-D-glucopyranoside (5), kaempferol-3-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside (6), 17-hydrotetratriacontane (7), n-dotriacontanol (8), n-triacontanol (9), palmitic acid ceryl ester (10), stearic acid (11), palmitic acid (12).


CONCLUSIONS
Compounds 3-12 were isolated from C. alata for the first time.
Liu
An
A
Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China. LA62@163
Xu
Lizhen
L
Zou
Zhongmei
Z
Yang
Shilin
S
D002366:Cassia / Q000737:chemistry*; D009930:Organic Chemicals / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry*
D009930:Organic Chemicals