Patent ID: 7696382

Claim:
A compound of formula I, or a pharmaceutically acceptable salt thereof, wherein Z is NR 1 R 2 wherein each of R 1 and R 2 is independently H, or a hydrocarbyl group; X-Y is selected from —C≡C—(CH 2 ) p —Y —C(R 5 )═C(R 6 )—(CH 2 ) q —Y; and —C(R 5 )(R 6 )C(R 7 )(R 8 )—(CH 2 ) r —Y; wherein each of R 5 , R 6 , R 7 , and R 8 is independently H or alkyl, and each of p, q and r is independently 2, 3, or 4; Y is a polar functional group selected from OH, NO 2 , CN, COR 3 , COOR 3 , NR 3 R 4 , CONR 3 R 4 , SO 3 H, SO 2 —R 3 , SO 2 NR 3 R 4 and CF 3 , where each of R 3 and R 4 is independently H or a hydrocarbyl group; A is phenyl; and B is (CH 2 ) n where n is 0.