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Pure Appl. Chem., 2003, Vol. 75, No. 2-3, pp. 389-393

http://dx.doi.org/10.1351/pac200375020389

Biotransformation of triptonide by cell suspension cultures of Platycodon grandiflorum

L. Ning1,2, Hongzhu Guo2, Xiaomei Jiang2, Kaishun Bi1 and Dean Guo2*

1 Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, P. R. China
2 The State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100083, P. R. China

Abstract: The biotransformation of triptonide by cell suspension cultures of Platycodon grandiflorum was investigated. After six days of incubation, five products were obtained. On the basis of chemical and spectral evidence, their structures were elucidated as epitriptolide-14-O-β-d-glucoside, 5α-hydroxytriptonide, triptolide, triptodiolide, and 2β-hydroxytriptonide, among which epitriptolide-14-O-β-d-glucoside and 5α-hydroxytriptonide are new compounds.