Abstract: 2-Oxo-1-pyrrolidinylalkylcarboxylic acid amides of formula I ##STR1## in which R represents a hydrogen atom or hydroxy group, R.sub.1 represents a hydrogen atom or a methyl group and R.sub.2 represents a substituted or unsubstituted pyridyl group or a substituted phenyl group, the substitution being by from 1 to 3 substituents, which may be the same or different selected from halogen atoms, trifluoromethyl, nitro and acetyl groups, straight or branched-chain alkyl groups having 1-4 carbon atoms, alkoxy groups having 1-4 carbon atoms, straight or branched-chain alkylmercapto groups having 1-7 carbon atoms, substituted alkylmercapto groups of the general formula II ##STR2## in which n represents 1 or 2, R.sub.3 is a hydrogen atom or a methyl group and R.sub.4 is a hydroxy group or an amino group of the general formula V ##STR3## in which R.sub.8 represents a hydrogen atom or methyl group and R.sub.9 represents a methyl group or substituted or unsubstituted benzyl group, or R.sub.8 and R.sub.

Abstract: The invention provides N-propionylsarcosineanilides of the formula: ##STR1## wherein n is an integer of 1 to about 3 and the substituent A which can be the same or different when n is greater than 1 is selected from the group consisting of trifluoromethyl; halogen; nitro; acetyl; a straight-chain or branched alkyl group having 1 to 4 carbon atoms; a straight-chain or branched alkoxy group having 1 to 4 carbon atoms; a straight-chain or branched alkylmercapto group having 1 to 7 carbon atoms; a substituted alkylmercapto group of the formula: ##STR2## wherein n is an integer of 1 or 2, R.sub.1 can represent hydrogen and methyl, and R.sub.2 can represent hydroxyl, and an amino group of the formula:--NR.sub.6 R.sub.7 Vwherein R.sub.6 can represent hydrogen, and methyl, and R.sub.7 can represent methyl, substituted benzyl, and R.sub.6 and R.sub.7, together with the nitrogen, can constitute a substituted pyrrolidine ring; a sulphonyl group of the formula:--SO.sub.2 R.sub.3 IIIwherein R.sub.