Luo Y, Yu S, Tong L, Huang Q, Lu W, Chen Y. Synthesis and biological evaluation of new homocamptothecin analogs.
Eur J Med Chem 2012;
54:281-6. [PMID:
22647222 DOI:
10.1016/j.ejmech.2012.05.002]
[Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 03/20/2012] [Accepted: 05/03/2012] [Indexed: 11/18/2022]
Abstract
In order to increase the stability of E-ring of homocamptothecins, the electron-withdrawing group -OH or -OAc was induced to α position of ring-E lactone. Ten new homocamptothecin analogs were synthesized. Most compounds showed potent in vitro anticancer activity and potent Topo I inhibition, which was equal or superior to that of CPT, SN-38 and 10-HCPT. The stability studies of this series also displayed significant improvement of the stability.
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