Effect of linkage geometry on biological activity in thiourea- and guanidine-substituted acridines and platinum–acridines
摘要:
Novel thiourea- and guanidine-modified acridine-4-carboxamides (4, 7) and a corresponding platinum intercalator conjugate (4') have been synthesized and evaluated as cytotoxic agents in human promyelocytic leukemia, HL-60, and a non-small cell lung cancer, NCI-H460. Modi. cation of thiourea sulfur in derivative 4 with a DNA platinating moiety, giving 4', resulted in a pronounced cytotoxic enhancement, and the conjugate proved to be the most active of the newly synthesized compounds in NCI-H460 cells. Conjugate 4' represents a new chemotype with potential applications in the treatment of chemoresistant tumors. (c) 2008 Elsevier Ltd. All rights reserved.
Effect of linkage geometry on biological activity in thiourea- and guanidine-substituted acridines and platinum–acridines
作者:Zhidong Ma、Gilda Saluta、Gregory L. Kucera、Ulrich Bierbach
DOI:10.1016/j.bmcl.2008.05.043
日期:2008.7
Novel thiourea- and guanidine-modified acridine-4-carboxamides (4, 7) and a corresponding platinum intercalator conjugate (4') have been synthesized and evaluated as cytotoxic agents in human promyelocytic leukemia, HL-60, and a non-small cell lung cancer, NCI-H460. Modi. cation of thiourea sulfur in derivative 4 with a DNA platinating moiety, giving 4', resulted in a pronounced cytotoxic enhancement, and the conjugate proved to be the most active of the newly synthesized compounds in NCI-H460 cells. Conjugate 4' represents a new chemotype with potential applications in the treatment of chemoresistant tumors. (c) 2008 Elsevier Ltd. All rights reserved.