Synthesis and antitumor activity of 7-ethyl-9-alkyl derivatives of camptothecin

被引:18
作者
Gao, HY [1 ]
Zhang, XW [1 ]
Chen, Y [1 ]
Shen, HW [1 ]
Sun, J [1 ]
Huang, M [1 ]
Ding, J [1 ]
Li, C [1 ]
Lu, W [1 ]
机构
[1] Chinese Acad Sci, Grad Sch, Shanghai Inst Mat Med, SIBS, Shanghai 201203, Peoples R China
关键词
camptothecin; topoisomerase I; antitumor activity;
D O I
10.1016/j.bmcl.2005.02.072
中图分类号
R914 [药物化学];
学科分类号
100701 [药物化学];
摘要
A series of new camptothecin derivatives, as topoisomerase I inhibitor, were synthesized to identify potent antitumor agents. The synthesis method was based on the Claisen rearrangement of 10-allyloxy-7-ethylcamptothecin. All of the compounds were assayed for cytotoxicity against two human tumor cell lines, Bel7402, HCT116, and showed good potency in vitro. Compounds 2, 4, 9, were assessed for the stability of lactone in human plasma. And then compound 2 was tested for antitumor activity in vitro against mouse tumor sarcoma-180. The results suggested that the small alkyl groups in the both 7- and 9-positions of camptothecin could promote liposolubility, antitumor activity in vitro and vivo, though did not bring much increase of the stability of lactone. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2003 / 2006
页数:4
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