Patent ID: 8093287

Claim:
A compound of Formula (30): wherein R 3 and R 4 are each independently H, OH, (C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, (C 1 -C 6 )alkanoyl, (C 1 -C 6 )alkanoyloxy, aryl, heteroaryl, carboxy, cyano, nitro, halo, trifluoromethyl, trifluoromethoxy, SR 5 , SO 2 N(R 5 ) 2 , NR 5 R 5 , or COOR 5 ; each R 5 is independently H, (C 1 -C 6 )alkyl, (C 1 -C 6 )alkanoyl, (C 6 -C 10 )aroyl, aryl, aryl(C 1 -C 6 )alkyl, heteroaryl, heteroaryl(C 1 -C 6 )alkyl, or a nitrogen protecting group; any alkyl, amino, aryl, or heteroaryl is optionally substituted with 1 to about 5 (C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, aryl, heteroaryl, aryl(C 1 -C 6 )alkyl, heteroaryl(C 1 -C 6 )alkyl, nitro, halo, amino, or hydroxy groups; or a pharmaceutically acceptable salt thereof.