Patent ID: 8143237

Claim:
A compound of formula (I) having a selenophene ring or a pharmaceutically acceptable salt thereof: wherein: R is selected from H, CH 3 and CH 2 OH; R 1 , R 2 and R 3 are each independently selected from the group consisting of H, N═N—N(CH 3 ) 2 , N═N—NHCH 3 , N═NN(CH 3 )CH 2 OH, CONH 2 , CONHR 4 , CONR 4 R 5 , CONHNH 2 , CONHNHR 4 , CONHNR 4 R 5 , COOCH 3 , COOCH 2 CH 3 , COON, COSH, CN, C≡CH, SO 2 NH 2 , SO 2 NHR 4 , SO 2 NR 4 R 5 , NO 2 , CF 3 , Cl, Br, F, CCl 3 , CH 3 , OH, OCH 3 , SH, SCH 3 , NH 2 , NHCH 3 , N(CH 3 ) 2 , alkyl, alkenyl, electron withdrawing functional groups and electron donating functional groups, wherein R 4 and R 5 are independently selected from the group consisting of H, CH 3 , C 1 -C 10 alkyl, alkenyl, alkylol, alkoxy, and alkylamine; or wherein any two of R 1 , R 2 and R 3 are joined together to form a ring selected from the group consisting of an alicyclic, aromatic, or heterocyclic ring system which is fused to two adjacent carbon atoms in said selenophene ring.