Design, synthesis and anticancer activity evaluation of novel C14 heterocycle substituted epi-triptolide
摘要:
Two series of novel C14 heterocycle substituted epi-triptolide derivatives as potential anticancer agents were synthesized and tested for their cytotoxicity against SKOV-3 and PC-3 tumor cell lines. The introduction of C14 beta-aryl heterocycle aminomethyl substituent to the leading compound was found to be an effective modification method to retain the potent anticancer activity. Meanwhile, the series of epitriptolide derivatives (21-40) with C14 alpha-hydroxyl group, still retained the natural product's cytotoxicity. This is apparently challenges the classical structure activity relationship of triptolide that considers the C14 beta-hydroxyl group to be essential for its anticancer activity. (C) 2013 Elsevier Masson SAS. All rights reserved.
Design and Synthesis of Novel C14-Hydroxyl Substituted Triptolide Derivatives as Potential Selective Antitumor Agents
作者:Zheng Li、Zhao-Li Zhou、Ze-Hong Miao、Li-Ping Lin、Hui-Jin Feng、Lin-Jiang Tong、Jian Ding、Yuan-Chao Li
DOI:10.1021/jm900342g
日期:2009.8.27
It has long been considered that the free beta hydroxyl group at C14 of triptolide(1) is essential to its potent anticancer activity. In this study, we synthesized novel derivatives of 1 with a hydroxyl group substituted by epoxy groups (4-8) ora five-membered ring (11-13). Compounds (4-8) showed significant in vitro anticancer activity although less potent than 1. Although with an alpha oxygen configuration at the C14 position, (14S)-14,21-epoxytriptolide (4) exhibited the highest potency among all these derivatives, clearly challenging the traditional viewpoint on the necessity of C14 beta-hydroxyl group of compound 1. Further studies revealed that while displaying broad spectrum ill vitro anticancer activity, compound 4 demonstrated prominent selective in vivo anticancer activity, particularly against human ovarian SK-OV-3 and prostate PC-3 cancers with obviously lower toxicity than 1. Noticeably, compound 4 was also highly effective against multidrug resistant cancer cells. Therefore, our study gives new insights into the structure-activity relationship of I and also produces a promising anticancer drug candidate with unique anticancer activities.
Design, synthesis and anticancer activity evaluation of novel C14 heterocycle substituted epi-triptolide
作者:Hongtao Xu、Huanyu Tang、Huijin Feng、Yuanchao Li
DOI:10.1016/j.ejmech.2013.11.044
日期:2014.2
Two series of novel C14 heterocycle substituted epi-triptolide derivatives as potential anticancer agents were synthesized and tested for their cytotoxicity against SKOV-3 and PC-3 tumor cell lines. The introduction of C14 beta-aryl heterocycle aminomethyl substituent to the leading compound was found to be an effective modification method to retain the potent anticancer activity. Meanwhile, the series of epitriptolide derivatives (21-40) with C14 alpha-hydroxyl group, still retained the natural product's cytotoxicity. This is apparently challenges the classical structure activity relationship of triptolide that considers the C14 beta-hydroxyl group to be essential for its anticancer activity. (C) 2013 Elsevier Masson SAS. All rights reserved.