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[A new paeoniflorin derivative isolated from the root bark ethanol extract of Paeonia suffruticosa]
Su-juan Wang1, Yong-chun Yang, Shuai Li
1Institute of Materia Medica, Peking Union Medical University and Chinese Academy of Medical Science, Beijing 100050, China.
Objective:
To study the chemical constituents of paeoniflorins from root cortex of the Paeonia suffruticosa.
Method:
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.
Result:
Nine paeoniflorins were isolated and identified from the root bark ethanol extract of P. suffruticosa.
Conclusion:
The new compound was identified as paeoniflorin-4-ethyl ether, which may be an artifact produced during extraction proved by simulate experiment.