Zhongguo Zhongyao Zazhi 2008-Aug
[Studies on chemical constituents from roots of Pterospermum heterophyllum].
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关键词
抽象
OBJECTIVE
To study the chemical constituents from the roots of Pterospermum heterophyllum.
METHODS
The chemical constituents of P. heterophyllum were isolated and purified by silica gel and sephadex LH-20 column chromatography. Their structures were identified on the basis of spectroscopic data and physicochemical properties.
RESULTS
Nine compounds were isolated and identified as taraxerol (1), betulin (2), betulinic acid (3), sumaresinolic acid (4), 2-methoxy-5-hydroxy-1, 4-naphthoquinone (5), 5, 7-dihydroxy-6, 8-dimethylchromone (6), alpha-monpalmitin (7), palmitic acid (8), beta-sitosterol (9).
CONCLUSIONS
Compounds 2-7 were isolated from this genus for the first time.