Patent ID: 8784775

Claim:
A compound of formula Ia wherein W is —CH 2 —C≡CH; A is substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, G 4 -(C 2 -C 4 )alkynyl-, G 4 -(C 1 -C 4 )alkoxy-, (G 4 -(C 1 -C 4 )alkyl)aryl-, or G 4 -(C 1 -C 4 )alkoxy)aryl-, G 1 , G 2 , G 3 and G 4 are, independently and individually, at each occurrence, hydrogen, (C 1 -C 4 )alkyl, L, or —(C 1 -C 6 )alkyl-L, with the proviso that exactly one of G 1 -G 4 is L or —(C 1 -C 6 )alkyl-L, L is a leaving group, or L is F, n is an integer from 0 to 6, and m is an integer from 1 to 4, or a pharmaceutically acceptable salt, ester, amide, or complex thereof.