TY - JOUR T1 - THE COMPARATIVE PHYSIOLOGICAL ACTION OF ANALOGOUS TRIMETHYL AMMONIUM IODIDES OF BENZENE AND FURANE JF - Journal of Pharmacology and Experimental Therapeutics JO - J Pharmacol Exp Ther SP - 65 LP - 70 VL - 74 IS - 1 AU - EDWIN J. FELLOWS AU - A. E. LIVINGSTON Y1 - 1942/01/01 UR - http://jpet.aspetjournals.org/content/74/1/65.abstract N2 - 1. In the present studies furfuryl- and benzyl-trimethyl ammonium iodides exhibited qualitatively indistinguishable but quantitatively different physiological effects. A parasympathetic type of effect was demonstrated for both compounds but the furfuryl derivative was found to be 6 to 8 times more active than its benzyl analogue. Both derivatives produced a rise of blood pressure in atropinized cats but in this case the benzyl compound was 6 to 8 times more active than the furfuryl derivative. 2. In anesthetized dogs and cats α-furfuryl ethyl trimethyl ammonium iodide evidenced a slightly greater depressor potency than α-phenyl ethyl trimethyl ammonium iodide whereas the latter exhibited greater pressor activity after atropine than its furfuryl analogue. 3. The intensity of depressor action, as well as pressor action, after atropine, of α-furfuryl ethyl- and α-phenylethyl trimethyl ammonium iodides was found to be less than that of their parent homologues. ER -