Patent ID: 7183301

Claim:
A compound of the formula (I) wherein R 1 represents halo, azido, isothiocyanate, thioalcohol, OR 4 , NHR 4 or N(R 4 ) 2 , where R 4 represents hydrogen atom, or substituted or unsubstituted groups selected from acyl, thioacyl, (C 1 –C 6 )alkoxycarbonyl, (C 3 –C 6 )cycloalkoxythiocarbonyl, (C 2 –C 6 )alkenyloxycarbonyl, (C 1 –C 6 )alkenylcarbonyl, aryloxycarbonyl, (C 1 –C 6 )alkoxythiocarbonyl, (C 2 –C 6 )alkenyloxythiocarbonyl, aryloxythiocarbonyl, —C(═O)—C(═O)-alkyl, —C(═O)—C(═O)-aryl, —C(═O)—C(═O)-alkoxy, —C(═O)—C(═O)-aryloxy, —(C═S)—S-alkyl, —(C═S)—NH 2 , —(C═S)—NH-alkyl, —C(═S)—N—(alkyl) 2 , —C(═S)—NH-alkenyl, (C═S)—(C═O)-alkoxy, —(C═S)—(C═O)-aryloxy, —C(═S)—O—(C═O)-alkyl, C(═S)—C(═S)-alkyl, —C(═S)—C(═S)-aryl, thiomorpholinylthiocarbonyl or pyrrolidinylthiocarbonyl; R 2 and R 3 are same or different and independently represent hydrogen, halogen atom, (C 1 –C 6 )alkyl group, halo(C 1 –C 6 )alkyl, cyano, nitro, SR a , NR a , OR a where R a represents substituted or unsubstituted (C 1 –C 6 )alkyl group, or halo(C 1 –C 6 )alkyl; Z represents S; Y 1 represents ═O or ═S group and Y 2 and Y 3 independently represent hydrogen, halogen, cyano, nitro, formyl, hydroxy, amino, ═O, ═S group, or substituted or unsubstituted groups selected from (C 1 –C 6 )alkyl, hydroxy(C 1 –C 6 )alkyl, (C 1 –C 6 )alkoxy(C 1 –C 6 )alkyl, (C 1 –C 6 )alkoxycarbonyl, carboxy(C 1 –C 6 )alkyl, (C 1 –C 6 )alkylsulfonyl, (C 1 –C 6 )alkylcarbonylamino(C 1 –C 6 ) alkyl, arylcarbonylamino(C 1 –C 6 )alkyl, amino(C 1 –C 6 )alkyl, mono(C 1 –C 6 )alkylamino, di(C 1 –C 6 )alkylamino, arylamino, (C 1 –C 6 )alkoxy, aryl, aryloxy, aralkyl, heteroaryl, heteroaralkyl, heterocyclyl or heterocycloalkyl; and Y 2 and Y 3 when present on adjacent carbon atoms together may also form a substituted or unsubstituted 5 or 6 membered aromatic or non-aromatic cyclic structure, optionally containing one or two hetero atoms; or a tautomeric forms, a stereoisomer, a polymorph, a pharmaceutically acceptable salts or a pharmaceutically acceptable solvate thereof.