The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 1982
Filed:
Aug. 24, 1981
Bernard L Zenitz, Rensselaer, NY (US);
Sterling Drug Inc., New York, NY (US);
Abstract
1-[(3- or 4-Benzoylphenyl)-lower-alkyl]-[(CH.sub.2).sub.n --N.dbd.B]-substituted-piperidines, useful as anti-asthmatic, anti-allergic, anti-cholinergic, bronchodilator and anti-inflammatory agents, are prepared by alkylation of an appropriate substituted piperidine with a (3- or 4-benzoylphenyl)-lower-alkyl halide or tosylate; by reaction of a 1-[2-(3- or 4-lithiophenyl)-lower-alkyl]-[(CH.sub.2).sub.n --N.dbd.B]-substituted-piperidine with benzonitrile and hydrolysis of the resulting benzimidoyl compound; or by reduction of a 1-[.alpha.-(3- or 4-benzoylphenyl)-lower-alkanoyl]-[(CH.sub.2).sub.n --N.dbd.B]-substituted-piperidine. The analogous carbinols are prepared by reduction, with an alkali metal borohydride, of the ketone.