Substituted piperidine derivatives

Abstract From the Canadian patent

Novel compounds useful as antihistamine agents antiallergy agents, and bronchodilators are represented by the following formula, wherein R1 represents cyclohexyl phenyl, or substituted, phenyl wherein the substituent on the substituted phenyl is selected from halogen, a straight or branched lower alkyl group of from 1 to 4 carbon atoms or a lower alkoxy, group of from 1 to 4 carbon atoms; R2 represents hydrogen or hydroxy; R3 represents hydrogen; or R2 and R3 taken together form a second bond between the carbon atoms bearing R2 and R3; n is an integer of from 1 to 3; 2 represents thienyl, naphthyl, phenyl, or substituted phenyl wherein the substituent on the substituted phenyl may be …