Patent ID: 7268166

Claim:
A compound of the formula: wherein: X is independently selected from the group consisting of: —H, —Br, —Cl, —F, —I, —CF 3 , alkyl, —OH, —OCF 3 , —O-alkyl, and —O-acyl; R 1 is independently selected from the group consisting of: —H, lower alkyl, and —O-acyl; R 2 is independently selected from the group consisting of: —H, alkyl, and hydroxyalkyl, or both R 2 s together are imino; R 4 is phenoxy which is optionally substituted with —F, —Cl, —Br, —I, —CF 3 , alkyl, —OH, —OCF 3 , —O-alkyl, or —O-acyl; provided that when X is H, then R 4 is substituted with at least one of: meta-fluoro, meta-chloro, meta-methyl, meta-OH, ortho-fluoro, ortho-chloro, ortho-methyl, or ortho-OH; m is independently an integer from 1 to 5; and pharmaceutically acceptable salts and complexes thereof.