A new paeoniflorin derivative isolated from the root bark ethanol extract of Paeonia suffruticosa / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the chemical constituents of paeoniflorins from root cortex of the Paeonia suffruticosa.</p><p><b>METHOD</b>Paeoniflorins were isolated by partition, silica gel column chromatography, medium-pressure RP chromatography and HPLC. Their structures were elucidated by spectroscopic methods including IR, MS and NMR techniques.</p><p><b>RESULT</b>Nine paeoniflorins were isolated and identified from the root bark ethanol extract of P. suffruticosa.</p><p><b>CONCLUSION</b>The new compound was identified as paeoniflorin-4-ethyl ether, which may be an artifact produced during extraction proved by simulate experiment.</p>