Patent ID: 7425559

Claim:
A method for the treatment of central diseases selected from the group consisting of Alzheimer's disease, Parkinson's disease, Huntington's chorea and Pick's disease comprising administering a compound represented by general formula (I) below, or a pharmacologically acceptable salt thereof wherein: R 1 represents a hydrogen atom, R 2 represents a C 1 -C 6 alkyl group or C 3 -C 6 cycloalkyl group, A represents a nitrogen atom, D represents a methylene group, a methyl methylene group, a halogen atom-substituted methylene group or a halogen atom substituted methyl methylene group, E represents a group of formula Ch 2 , a group of formula CHR 3 (in the formula, R 3 represents a C 1 -C 6 alkyl group), a group of formula CH or a C 1 -C 6 alkyl group-substituted carbon atom, Arom represents an aryl group, an aryl group having from 1 to 3 identical or different substituent groups selected from the group consisting of halogen atoms, C 1 -C 6 alkyl groups, and C 1 -C 6 alkyloxy groups, a heteroaryl group or a heteroaryl group having from 1 to 3 substituent groups halogen atoms, C 1 -C 6 alkyl groups, and C 1 -C 6 alkyloxy groups, and the part represented by is a single bond or double bond.