The invention relates to a
glimepiride derivative AX-134, which contains 5-aminovaleric acid methyl
ester hydrochloride and pharmaceutically acceptable reaction materials, and is prepared by the following steps: dissolving the 5-aminovaleric acid methyl
ester hydrochloride in an
organic solvent, then adding
phenyl chloroformate, then adding an alkali, reacting at
room temperature for 0.5-6 hours, adding 1M diluted
hydrochloric acid, extracting, and concentrating to obtain the
glimepiride derivative AX-134. The preparation method comprises the following steps: dissolving 4-[2-(3-ethyl-4-methyl-2-oxo-3-
pyrroline-1-formamido) ethyl]-benzenesulfonamide (CAS: 119018-29-0) in an
organic solvent, adding an alkali, carrying out a
reflux reaction for 2-12 hours, carrying out reduced pressure
distillation to remove
acetonitrile, adding
ethyl acetate and a 1M
sodium hydroxide aqueous solution (V / V = 1: 1), carrying out a reaction for 2-12 hours, and carrying out reduced pressure
distillation to obtain the 4-[2-(3-ethyl-4-methyl-2-oxo-3-
pyrroline-1-formamido) ethyl]-benzenesulfonamide compound, namely the 4-[2-(3-ethyl-4-methyl-2-oxo-3-
pyrroline-1-formamido) ethyl]-benzenesulfonamide compound. Stirring reaction and liquid separation are performed, the pH value of a water phase is adjusted with concentrated
hydrochloric acid, filtering is performed after stirring overnight, white solids are obtained and dried, and the
glimepiride derivative AX-134 is obtained; the method can conveniently realize hectogram-level preparation in a laboratory, and is suitable for large-scale production.