Patent ID: 8614333

Claim:
An acenaphtho heterocyclic compound of Formula I: wherein: R 1 is selected from the group consisting of H, thiomorpholinyl and XR 4 ; R 2 is selected from the group consisting of (CH 2 ) n Z and (CH 2 ) n Ph-(o,m,p)Z; Z is selected from the group consisting of NO 2 , Ph, CF 3 , OCH 3 , SCH 3 , NH 2 , NHCH 3 , N(CH 3 ) 2 , and straight or branched C 1-8 alkyl that is unsubstituted or substituted by halogen, amino, hydroxyl, ester or carboxyl; R 3 is (CH 2 ) n W, wherein W is selected from the group consisting of H, CN, NO 2 , NH 2 , COOH, CHO, OH, and SO 3 H; R 4 is selected from the group consisting of (CH 2 ) n Y, thenoyl, tetrahydropyrane, tetrahydrothiapyran, and (CH 2 ) n Ph-(o,m,p)Y, Y is a straight or branched C 1-8 alkyl that is unsubstituted or substituted by halogen, amino, hydroxyl, ester or carboxyl; X is O, S, amino, carbonyl, ester, amide or sulfamide; n is 0 to 4.