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The Discovery of the Potent and Selective Antitumour Agent 2-(4-Amino-3-methylphenyl) benzothiazole (DF 203) and Related Compounds

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The development of a series of potent and selective antitumour agents, the 2-(4-aminophenyl) benzothiazoles, is described. The original lead compound in this series, CJM 126, exhibits nanomolar in vitro activity against certain human breast cancer cell lines. Structure-activity relationship studies within this simple antitumour benzothiazole pharmacophore revealed that 2-(4-aminophenyl) benzothiazoles bearing a 3-methyl, 3-bromo, 3-iodo or 3-chloro substituent are especially potent, extending the spectrum of in vitro antitumour activity to ovarian, lung, renal and colon carcinoma cell lines with a remarkable selectivity profile (NCI analysis). Other interesting features of this series include the highly unusual transient biphasic dose response relationship and possible unique mechanism of action (NCI COMPARE analysis). 2-(4-Amino-3-methylphenyl)benzothiazole (DF 203) has been selected as the lead compound in this series on the basis of superior in vivo results.
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Keywords: Anticancer agents; Biotransformation produts; CJM and Analogues; Selective Antitumour Agents; Trapping of Nitrenium; prodrugs

Document Type: Review Article

Publication date: February 1, 2001

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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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