Patent ID: 6432941
Filing Date: 2002-08-13
Classification: A61K,A61P,C07F

Abstract:
A compound of formula IV: whereinR5 is hydrogen; R4 and R6 are each independently (C1-C3)alkyl, halogen, (C1-C3)alkoxy, halo (C1-C3) alkyl, cyano, (C2-C6)alkanoyloxy or nitro; X4 and X5 are each independently OH2 or no ligand is present on X5 or taken together X4 and X5 form a N,N-bidentate ligand selected from the group consisting of N,N-bipyridine, N,N-bipyrimidine, and N,N-phenanthroline, wherein the N,N-bidentate ligand can be substituted with up to two groups that are independently (C1-C3)alkyl, halogen, (C1-C3)alkoxy, halo (C1-C3)alkyl, cyano, (C2-C6)alkanoyloxy or nitro; Y is OH2 or OSO3; or a pharmaceutically acceptable salt thereof.