Phenazine-1-carboxamides: Structure–cytotoxicity relationships for 9-substituents and changes in the H-bonding pattern of the cationic side chain
作者:Swarna A. Gamage、Gordon W. Rewcastle、Bruce C. Baguley、Peter A. Charlton、William A. Denny
DOI:10.1016/j.bmc.2005.09.032
日期:2006.2
A series of phenazine-1-carboxamides were prepared, including variations in both chromophore substituents and the nature of the cationic side chain. The novel side-chain analogues were prepared from the corresponding phenazine-1-carboxylic acids via Schmidt conversion to the 1-amines and from the corresponding 1-halides. Structure-cytotoxicity relationships for these compounds in a panel of tumor cell lines showed that there is very limited scope for variation of the structure of the 1-carboxamide side chain, consistent with the recent Structural model of flow tricyclic carboxamides bind to DNA. There was generally little difference in IC(50)s between parent and P-glycoprotein expressing cell lines, suggesting that most of the compounds are not affected by the presence of this efflux pump. (c) 2005 Elsevier Ltd. All rights reserved.