Patent ID: 7235674

Claim:
A compound selected from the group consisting of: 3-Cyano-7-methoxy-4-(3-bromo-4,5-dimethoxyphenyl)-2-oxo-2H-chromene; 3-Cyano-7-methoxy-4-(3,5-dimethoxyphenyl)-2-oxo-2H-chromene; 3-Cyano-4-(3-methoxy-phenyl)-7-methoxy-2-oxo-2H-chromene; 7-Amino-4-(3-bromo-4,5-dimethoxyphenyl)-3-cyano-2-oxo-2H-chromene; 3-Cyano-7-dimethylamino-4-(3-bromo-4,5-dimethoxyphenyl)-2-oxo-2H-chromene; 7-Amino-3-cyano-4-(3,5-dimethoxyphenyl)-2-oxo-2H-chromene; 3-Cyano-7-dimethylamino-4-(3,5-dimethoxyphenyl)-2-oxo-2H-chromene; 4-(3-Bromo-4,5-dimethoxy-phenyl)-3-cyano-7-methylamino-2-oxo-2H-chromene; 7-Amino-4-(3-bromo-4,5-dimethoxy-phenyl)-3-cyano-2-imino-2H-chromene; 7-Bromo-4-(3-bromo-4,5-dimethoxy-phenyl)-3-cyano-2-imino-2H-chromene; 4-(3-Bromo-4,5-dimethoxy-phenyl)-7-chloro-3-cyano-2-oxo-2H-chromene; 4-(3-Bromo-4,5-dimethoxy-phenyl)-7-chloro-3-cyano-2-imino-2H-chromene; and 2-Imino-3-cyano-7-dimethylamino-4-(3-bromo-4,5-dimethoxyphenyl)-2H-chromene.