Patent ID: 6939977

Claim:
A compound represented by the following structural formula: and physiologically acceptable salts thereof, wherein: ring A has zero to three endocyclic double bonds; Z is >C(CH 3 ) 2 or —C═O; R 2 is —H, —OH, —OCH 3 , —OCH 2 CH 3 , halogen, —CN, —NO 2 , —CH 3 , —C(halogen) 3 , —CH 2 OH, —CH 2 OCH 3 , —CH 2 OCH 2 CH 3 , —CH 2 (halogen), —CH 2 CN, —CH 2 NO 2 , —CH 2 CH 3 , —CH 2 C(halogen) 3 , —CH 2 NH 2 , —CH 2 NHCH 3 or —CH 2 N(CH 3 ) 2 ; X is a covalent bond; and Y is a fused bicyclic ring system having only carbon atoms as ring members, a substituted fused bicyclic ring system having only carbon atoms as ring members, a bridged bicyclic ring system having only carbon atoms as ring members, a substituted bridged bicyclic ring system having only carbon atoms as ring members, a bridged tricyclic ring system or a substituted bridged tricyclic ring system.