Patent ID: 7803898

Claim:
An aminoquinoxaline compound of the following formula (1a) wherein R 1 and R 2 independently represent a hydrogen atom, a hydroxyl group, a C 1 -C 10 alkyl group, a C 1 -C 10 alkoxy group, a phenyl group which may be substituted with Y, a pyridyl group which may be substituted with Y, a biphenyl group which may be substituted with Y, a naphthyl group which may be substituted with Y, a thienyl group which may be substituted with Y, a pyrolyl group which may be substituted with Y, a furyl group which may be substituted with Y or a condensed heteroaryl group which may be substituted with Y provided that when R 1 and R 2 are, respectively, the above-defined phenyl, pyridyl, biphenyl, naphthyl, thienyl, pyrolyl, furyl or condensed heteroaryl group, these groups may be joined through a single bond; R 3 and R 4 independently represent a hydrogen atom, a halogen atom, a cyano group, a nitro group, an amino group, a C 1 -C 10 alkyl group, a C 1 -C 10 alkoxy group, a phenyl group which may be substituted with Y, a pyridyl group which may be substituted with Y, a biphenyl group which may be substituted with Y, a naphthyl group which may be substituted with Y, a thienyl group which may be substituted with Y, a pyrolyl group which may be substituted with Y, a furyl group which may be substituted with Y or a condensed heteroaryl group which may be substituted with Y provided that when R 3 and R 4 are, respectively, the above-defined phenyl, pyridyl, biphenyl, naphthyl, thienyl, pyrolyl, furyl or condensed heteroaryl group, these groups may be joined through a single bond; X 1 represents —NH—R 5 —NH 2 ; R 5 represents a divalent benzene ring which may be substituted with Y; Y represents a halogen atom, a cyano group, a nitro group, an amino group, an epoxy group, a vinyl group, a C 1 -C 10 alkyl group, a C 1 -C 10 haloalkyl group, a C 1 -C 10 alkoxy group, a C 1 -C 10 cyanoalkyl group, a phenyl group which may be substituted with Z, a pyridyl group which may be substituted with Z, a biphenyl group which may be substituted with Z, a naphthyl group which may be substituted with Z, a thienyl group which may be substituted with Z, a pyrolyl group which may be substituted with Z, a furyl group which may be substituted with Z or a condensed heteroaryl group which may be substituted with Z provided that if Y is two or more in number, Y may be the same or different; and Z represents a halogen atom, a cyano group, a nitro group, an amino group, an epoxy group, a vinyl group, a C 1 -C 10 alkyl group, a C 1 -C 10 haloalkyl group, a C 1 -C 10 alkoxy group, a C 1 -C 10 cyanoalkyl group, a phenyl group, a biphenyl group, a naphthyl group, a thienyl group, a pyrolyl group, a furyl group or a condensed heteroaryl group provided that if Z is two or more in number, Z may be the same or different.