Patent ID: 7345084

Claim:
A compound of formula (I): wherein: X=S or S(O); R 1 is selected from the group consisting of hydrogen, C 1-8 alkyl, cycloalkyl, aralkyl and heteroaryl-alkyl, wherein the cycloalkyl, aralkyl or heteroaryl-alkyl group is optionally substituted with one or more substituents independently selected from the group consisting of halogen, hydroxy, alkyl, alkoxy, NO 2 , CF 3 , CN and CO 2 H; R 2 is C 1-8 alkyl or C 2-8 alkenyl optionally substituted by one or more of methyl, or hydroxyl or CH 2 OH, or R 2 is aryl optionally substituted with CF 3 , CN, NO 2 , C 1-8 alkyl or OC 1-8 alkyl, provided that when R 2 is optionally substituted C 1-8 alkyl, or C 2-8 alkenyl then R 4 and R 5 cannot be halogen; R 3 is hydrogen, NO 2 , halogen, C 1-8 alkyl, CN or CF 3 ; R 4 is halogen, NO 2 or CN; R 5 is halogen or CF 3 ; provided that R 4 is NO 2 or CN when R 5 is CF 3 , and R 4 is halogen when R 5 is halogen; and a pharmaceutically acceptable salt thereof.