Neuromuscular blocking agents. Replacement of quaternary ammonium groups in bis-onium compounds by amidinium, guanidinium, thiouronium, sulphonium and sulphoxonium groups

Abstract

Abstract The quaternary ammonium groups of suxamethonium have been replaced by amidinium, guanidinium and thiouronium groups. The guanidine compound exhibited competitive neuromuscular activity of a low order of potency; the other compounds were ineffective. Replacement of the quaternary ammonium groups in decamethonium by ethylmethylsulphonium or dimethylsulphoxonium groups gave less potent, depolarizing agents.