A compound represented by the following formula (I)
wherein R
1
and R
2
are each a lower alkyl group optionally having substituents, which has a calpain inhibitory activity, or a salt thereof is provided.
下式(I)代表的化合物
其中 R
1
和 R
2
均为可选具有取代基的低级烷基,具有
钙蛋白酶抑制活性的化合物或其盐。