SUBSTITUTED PYRAZOLE AND TRIAZOLE COMPOUNDS AS KSP INHIBITORS
申请人:Xia Yi
公开号:US20080200462A1
公开(公告)日:2008-08-21
Disclosed are new substituted pyrazole and triazole compounds of Formula (I) and pharmaceutically acceptable salts, esters or prodrugs thereof, compositions of the derivatives together with pharmaceutically acceptable carriers, and uses thereof:
Novel fluorinated diaminobutane derivatives are inhibitors of gamma-aminobutyric acid transaminase and have the following general Formula l:-
R1 represents hydrogen, C1-C6 alkyl or phenyl-C1-C4 R, represents hydrogen, C1-C6 alkyl or phenyl-C1-C4
alkyl; R2 represents hydrogen, C1-C6 alkyl, phenyl-C1-C4 alkyl, or R4 is as defined below;
R3 represents hydrogen or, except when R2 represents R4, R4, where R4 is as defined below;
each R4 independently represents C2-CS alkylcarbonyl, phenylcarbonyl, phenyl-(C,-C4 alkyl) carbonyl, or an aminocarboxylic acid residue derived by removal of an hydroxy group from the carboxy moiety of an L-aminocarboxylic acid; and
p represents 1 or 2,
and pharmaceutically acceptable acid addition salts thereof.
Difluoroacetaldehyde ethyl hemiacetal (1), prepared from ethyl difluoroacetate and lithium aluminum hydride in diethyl ether, was found to be a potential difluoroethylating reagent for the preparation of a wide variety of difluoromethylated compounds. Compound 1 shows promise for use in the synthesis of carbinols prepared by the reaction of 1 with metal reagents or enol silyl ethers, the synthesis of amino acid ketones and beta-lactams via the nucleophilic reaction of imines, and the synthesis of sugar analogues.