Patent ID: 7456292

Claim:
A compound of the formula (Ia) its derivatives, stereoisomers and its pharmaceutically acceptable salts wherein; V is CH or N; R 1 represents —OR 10 ; NR 11 R 12 ; R 2 and R 3 may be same or different and independently represent H, COR 13 , substituted or unsubstituted groups selected from the group consisting of alkyl, alkenyl, aryl, heteroaryl, alkylsufonyl, alkylsulfinyl, arylsulfonyl, arylsulfinyl, alkylthio, arylthio and heterocyclyl; or R 2 and R 3 may together form a heterocyclic ring; Z represents O, S or NR 14 ; when Z represents O or S, R 6 represents hydrogen or substituted or unsubstituted groups selected from the group consisting of alkyl, alkenyl, aryl, aralkyl, cycloalkyl, heteroaryl, heteroaralkyl and heterocyclyl; when Z represents NR 14 , R 6 represents H, hydroxy, protected hydroxyl group, amino, substituted or unsubstituted groups selected from the group consisting of alkyl, haloalkyl, alkenyl, monoalkylamino, dialkylamino, aryl, aralkyl, cycloalkyl, heteroaryl, heteroaralkyl and heterocyclyl; R 10 represents hydrogen, substituted or unsubstituted groups selected from the group consisting of alkyl, alkenyl, aryl, aralkyl, heteroaryl, and a counter ion; R 11 and R 12 may be same or different and independently represent H, substituted or unsubstituted groups selected from the group consisting of alkyl, alkenyl and aryl or R 11 and R 12 together with nitrogen may represent substituted or unsubstituted mono or bicyclic saturated or unsaturated ring system which may contain one or more heteroatoms selected from O, S or N; R 13 represents H, substituted or unsubstituted groups selected from the group consisting of alkyl, aryl, alkenyloxy, aryloxy, alkoxy and aralkoxy; R 14 represents hydrogen or alkyl.