Neuronal death inhibitors

摘要

The present invention relates to neuronal death inhibitors containing, as its active ingredient, a compound represented by the following formula (1): [wherein, R<1 >represents a hydrogen atom or a hydroxyl group, R<2 >represents a hydrogen atom or a methyl group, and R<3 >represents a pyridyl group or a phenyl group having 1 to 3 substituents which are the same or different], or acid addition salt thereof.