Zhongguo Zhongyao Zazhi 2010-Feb
[Chemical contituents in leaves of Ehretia thyrsiflora].
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OBJECTIVE
To investigate the chemical constituents of Ehretia thyrsiflora.
METHODS
Compounds were isolated with silica gel, Sephadex LH-20 and RP-C18 colum chromatography. Their structures were elucidated by means of physico-chemical properties and spectral analysis.
RESULTS
Six compounds were isolated and identified as beta-sitosterol (1), ethyl caffeate (2), 2-methoxyl benzoic acid octyl ester (3), tetradecenoic acid, 2,3-dihydroxypropyl ester (4), daucoster (5), allantoin (6).
CONCLUSIONS
Compounds 1-5 were obtained from this species for the first time. Compounds 2-5 were obtained from the genus Ehretia for the first time.
