METHOD OF PREPARING N-/4-/-(PYRAZOLE-1-CARBONAMIDE)-ETHYL/-BENZENESULFONYL/UREAS

摘要

N-{4-[2-(Pyrazole-1-carbonamide)-ethyl]-benzenesulphonyl}-ureas of the formula 1 wherein R, R2 are a hydrogen atom or lower alkyl of up to 4 carbon atoms, R1 is a hydrogen, chlorine or lower alkyl atom containing up to 4 carbon atoms and R3 is an alkyl of 2 to 5 carbon atoms or cycloalkyl of 5 to 6 carbon atoms, and their method of preparation is described, said compounds possessing biological properties, capable of decreasing the sugar level in blood.