Quinic acid esters from herba of Siphonostegia chinensis / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the bioactive constituents, quinic acid esters, from Siphonostegia chinensis.</p><p><b>METHOD</b>The compounds were extracted with solvents, isolated by various column chromatography and identified by spectroscopic methods.</p><p><b>RESULT</b>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).</p><p><b>CONCLUSION</b>All compounds were isolated from Siphonostegia for the first time.</p>