METHODE OF MANUFACTURING GLIMEPIRIDE AND THE RESPECTIVE INTERMEDIATE

摘要

A method of manufacturing glimepiride of formula I wherein trans-4-methylcyclohexylamine pivalate of formula (VII) is reacted, either directly or after conversion to trans-4-methylcyclohexylamine or to its another salt, with an alkyl [4-(2-{[(3-ethyl-4-methyl-2-oxo-2,5-dihydro-lH-pyrrol-l yl)carbonyl]amino)ethyl)phenyl]-sulfonyl carbamate of general formula (IV) wherein R is a C1-C5 alkyl, giving glimepiride of formula I. trans-4-Methylcyclohexylamine pivalate of formula (VII).