Patent ID: 7332615

Claim:
A derivative of 4,8-dihydrobenzodithiophene-4,8-dione having the formulas (D) or (E): wherein Y and Z independently are O, S, —NH— or Se; A 1 and A 2 independently are O, S, and NR 5 , wherein R 5 is H or alkyl; R 1 , R 2 , R 3 , and R 4 independently are H, alkyl, —CR 5 R 6 —X—C (O)—(CH 2 ) n COOH, —CR 5 R 6 —X—(CH 2 ) n COOH, —CR 5 R 6 —X—(CH 2 ) n NR 5 R 6 , —C (O)—NR 6 —(CR 5 R 6 ) n COOH, —C (O)—NR 6 —(CR 5 R 6 ) n NR 5 R 6 , —CR 5 R 6 —C (O)—(CH 2 ) n COOH, CR 5 R 6 —X—C (O)—(CH 2 ) n NR 5 R 6 , —C (O)—(CR 5 R 6 ) n COOH, —C (O)—(CR 5 R 6 ) n NR 5 R 6 , —CR 5 ═N—(CH 2 ) n COOH, —CR 5 ═N—(CH 2 ) n COOH, —CR 5 ═NO, or wherein X is O, S, or NH; R 5 is defined as above; R 6 is H or alkyl; and n is 1-5; subject to the proviso that at least one of R 1 , R 2 , R 3 , and R 4 is a radical other than hydrogen and alkyl; or a pharmaceutically acceptable salt thereof.