| abstract |
The novel compounds of this invention are of the imidazoline class of heterocycles having substituents in the 2 and 4 imidazoline ring positions and optionally in the 3-position. Substituents in the 2-position include amino, hydroxyamino, alkylamino, benzylamino, halobenzylamino, dihalo benzylamino, allylamino, cycloalkylamino, hydrazino, and alkylidenehydrazino. Optional 3-position subsitutents are alkyl and benzyl. The substituent in the 4-position is comprised of phenyl or R-phenyl in which the R-substituent is selected from halogen, alkyl, benxyloxy, alkoxy, dialkoxy, 3-hydroxy, 3,4-dihydroxy, trifluoromethyl, phenyl, halophenyl, or alkylphenyl. The novel imidazolines have antihypertensive and neuronal blocking properties. They are prepared by cyclization of appropriately substituted 1-phenylethylenediamines with cyanogen bromide or by displacement of a methylmercapto grouping from an appropriately substituted 2-methylthioimidazoline. Representative embodiments of this invention are 2-amino-4-(4-chlorophenyl)-2-imidazoline and 2-amino-4-(3,4-dichlorophenyl)-2-imidazoline. |