Synthesis of 4-substituted aminobenzoate quaternary salts as potent antispasmodic agents

Article abstract of DOI:10.1002/jps.2600680320

N-(Diethylaminoethyl)-4-substituted aminobenzoate quaternary salts, N-(diethylaminoethyl)-4-substituted aminobenzamide quaternary salts, 4-substitued acylaminobenzamide quaternary salts, and 4-substituted acylaminosalicylamide derivatives were prepared and tested for antispasmodic activity. Preliminary pharmacological tests on isolated guinea pig ileum revealed that the new compounds possess nonspecific inhibitory action on smooth muscles.