Isothiazole derivatives useful as anticancer agents
申请人:Pfizer Inc.
公开号:US06235764B1
公开(公告)日:2001-05-22
The present invention relates to compounds of the formula 1
and to pharmaceutically acceptable salts, prodrugs and solvates thereof, wherein X1, R1, R2 and R3 are as defined herein. The invention also relates to pharmaceutical compositions containing the above compounds and to methods treating hyperproliferative disorders in mammals by administering the above compounds.
Herbicidal allophanimidic acid esters of the formula: ##STR1## where R.sub.1, R.sub.2, R.sub.4 and R.sub.5 are selected from hydrogen and certain organic radicals, at least one of them being an organic radical; R.sub.3 is selected from hydrogen and certain organic radicals; R.sub.6 is selected from certain organic radicals; and X.sub.1, x.sub.2, and X.sub.3 are selected from oxygen and sulfur; And salts of the above compounds in which R.sub.3 is hydrogen. Preparation of the compounds by carbamoylation of ##STR2## or by reaction of ammonia or an amine with ##STR3## where Y is --SCH.sub.3, --Cl, or ##STR4## An exemplary compound: methyl N-dimethylcarbamoyl-4-tert-butylthioallophanimidate.