Cyclic 3-toluene-p-sulphonamidolactams (111; n= 2, 3, and 4) are formed by the action of ammonia or triethylamine on the methyl ester hydrochlorides of aN-toluene-p- sulphonyldiamino-acids(I1; n= 2, 3, and 4), and by hydrogenolysis of wN-benzyloxycarbonyl-
