AGENT FOR THE REMEDY OF NEURAL DAMAGE HAVING A NITROGEN-CONTAINING COMPOUND AS THE ACTIVE INGREDIENT

摘要

Compounds represented by general formula (1); and neuropathy improvers containing the same as the active ingredient: wherein G is a group represent ed by the general formula (G1) or the like: [wherein R4 is hydrogen, acyl, or t he like; W is a single bond, alkylene, or the like; m is 0 or 1; R5 and R6 are each hydrogen, an aliphatic hydrocarbon group, an alicyclic hydrocarbon grou p, an aromatic hydrocarbon group, a heterocyclic group, or the like; and R7 is hydrogen, acyl, alkoxycarbonyl, or the like]; A2 is a single bond, -O-, -NR3 -, or -S(=O)n-; A1 and A3 are each a single bond, an aliphatic hydrocarbon grou p, an alicyclic hydrocarbon group, a heterocyclic group, phenylene, or the like ; A4 is a single bond, carbonyl, an aliphatic hydrocarbon group, or the like; and R1 and R2 are each hydrogen, alkyl, cycloalkyl, phenyl, a heterocyclic group, or the like, these groups being each optionally substituted.