Patent ID: 7348342

Claim:
A compound of formula (I), their tautomers, their pharmaceutically acceptable salts, and their pharmaceutically acceptable compositions, wherein G represents one of A, B, C, E, or F as described below: R 1 represents hydrogen, substituted or unsubstituted groups selected the group consisting of from alkyl, aralkyl, acyl, alkylsulfonyl, and arylsulfonyl groups; R 2 represents alkyl, aralkyl, alkoxy or —NHR where R represents hydrogen or a lower alkyl group which may be suitably substituted; X 1 , X 2 , X 3 , and X 4 may be same or different and represent hydrogen, cyano, nitro, halo, carboxyl, formyl, hydrazino, azido, amino, thio, hydroxy, or a substituted or unsubstituted group selected from the group consisting of alkyl which may be linear or branched, alkenyl, cycloalkyl, alkoxy, cycloalkoxy, cycloalkoxyalkyl, haloalkoxy, hydroxyalkyl, alkoxyalkyl, thioalkyl, carboxyalkyl, haloalkyl, aminoalkyl, cyanoalkyl, alkylthio, alkylsulfinyl, alkylsulfonyl, alkoxycarbonylalkyl, acyl, acyloxy, acyloxyalkyl, aralkyl, aryloxy, aralkoxy, aryloxyalkyl, aralkoxyalkyl, aralkenyl, acylamino, alkylamino, dialkylamino, aralkylamino, alkoxyamino, hydroxylamino, alkoxycarbonyl, and aralkoxycarbonyl groups; R 3 represents a substituted or unsubstituted alkyl, or a substituted or unsubstituted, single or fused group selected from the group consisting of aryl, aralkenyl, heteroaryl, and heterocyclic groups; R 4 and R 5 represent hydrogen atom, halogen atom, carboxy, or a substituted or unsubstituted group selected from the group consisting of linear or branched alkyl, alkoxycarbonyl, hydroxyalkyl, alkoxyalkyl, and phenyl groups; Y represents O or S; and W represents O or S.