Patent ID: 7214714

Claim:
A hydroxyformamidine compound represented by the following formula or a pharmaceutically acceptable salt thereof: wherein R 1 represents a substituted piperidino group, a piperazin-1-yl group, a substituted piperazin-1-yl group, a thiomorpholin-1-yl group, a perhydroazepin-1-yl group, a perhydroazocin-1-yl group, a tetrahydropyridin-1-yl group, a pyrrolin-1-yl group, a 1,4-dioxa-8-azaspiro[4,5]decan-8-yl group, or a decahydroquinolin-1-yl group; X is a nitrogen atom or a group represented by CR 5 ; and R 2 to R 5 are the same or different and each represents a hydrogen atom, a C 1-4 alkyl group, a C 1-4 alkoxy group, a trifluoromethyl group or a halogen atom.