Pyridoxal hydrazone derivatives their production and use and pharmaceutical compositions containing the same.

摘要

A pyridoxal hydrazone derivative of the general formula I <CHEM> wherein R1 is an H atom or an alkyl, a methoxy-carbonylmethyl group or ethoxy-carbonylmethyl group X is a halogen or hydroxyl group and R2 is a 4, 5, 6 or 7 membered heterocycle having one or more nitrogen, sulfur, or oxygen atoms in the heterocyclic ring, said ring being optionally substituted by one or more oxo, halogen, hydroxy, nitro, amino, cyano, trifluoromethyl, lower alkyl or alkoxy groups, and R3 is a hydrogen atom or an acetyl, propionyl or succinyl group and pharmaceutical compositions containing such derivatives.