1: 4-[2-(3-ethyl-4-methyl-2-carbonyl pyrrolidine-amido)-ethyl]benzene sulfonamide With potassium carbonate T=55 - 60°C; 1 h; Heating / reflux; 2: trans-4-methyl- cyclohexyl isocyanate in toluene 12 h; Heating / reflux;

4-(N,N-dimethlyamino)pyridine in toluene Heating / reflux;