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[Quinic acid esters from herba of Siphonostegia chinensis]
Hong-liang Jiang1, Li-zhen Xu, Xue-dong Yang
1Institute of Medicinal Plant, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100094, China.
Abstract
Objective:
To study the bioactive constituents, quinic acid esters, from Siphonostegia chinensis.
Method:
The compounds were extracted with solvents, isolated by various column chromatography and identified by spectroscopic methods.
Result:
Three quinic acid esters were isolated and identified as 3,4-di-O-caffeoylquinic acid(I), macranthoin F(II), and methyl ester of 3, 4,5-tri-O-caffeoylquinic acid (III).
Conclusion:
All compounds were isolated from Siphonostegia for the first time.