Ammonium salts derived from hexahydrodibenzodioxane, their intermediates, their preparation and their application in therapy

Abstract From the Canadian patent

The invention is dealing with antispasmodic compounds of the formula I, in which R1 denotes H, halogen or a linear or branched C1 to C3 alkoxy or alkyl group, R2, R3 and R4 separately denote a linear or branched C1 to C4 alkyl group or R2 and R3 together with the nitrogen atom to which they are bound form a saturated heterocyclic radical, Z denotes a linear or branched C1 to C6 alkylene group and X denotes an anion, preferably a halogen ion and is, dealing with intermediates in the preparation of the compounds of formula I.