Patent ID: 6734181
Filing Date: 2004-05-11
Classification: A61K,A61P,C07D

Abstract:
A pyrrolopyridazine compound having the following formula or a pharmaceutically acceptable salt thereof: wherein: R1 is selected from the group consisting of C2-C6 alkenyl groups, halogeno C2-C6 alkenyl groups, C3-C7 cycloalkyl groups which may be optionally substituted with a C1-C6 alkyl group and C3-C7 cycloalkyl-C1-C6 alkyl groups which may be optionally substituted with a C1-C6 alkyl group; R2 represents a C1-C6 alkyl group; R3 is selected from the group consisting of hydroxymethyl groups, C2-C6 aliphatic acyloxymethyl groups, C6-C10 arylcarbonyloxymethyl groups which may be optionally substituted with substituents selected from the group consisting of C1-C6 alkyl groups, C1-C6 alkoxy groups and halogen atoms, C1-C6 alkoxycarbonyloxymethyl groups, formyl groups, carboxyl groups, C1-C6 alkoxycarbonyl groups and C6-C10 aryloxycarbonyl groups which may be optionally substituted with substituents selected from the group consisting of C1-C6 alkyl groups, C1-C6 alkoxy groups and halogen atoms; R4 represents a C6-C10 aryl group which may be optionally substituted with substituents selected from the group consisting of C1-C6 alkyl groups, halogeno C1-C6 alkyl groups, C1-C6 alkoxy groups, halogeno C1-C6 alkoxy groups and halogen atoms; and A is selected from the group consisting of imino groups, oxygen atoms and sulfur atoms.