210095-48-0Relevant articles and documents
OPTICALLY ACTIVE PIPERIDINE DERIVATIVE ACID-ADDITION SALT AND PREPARATION THEREOF
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Page/Page column 0060, (2016/10/09)
PROBLEM TO BE SOLVED: To provide a benzene sulfonic acid salt of (S)-4-[4-[(4-chlorophenyl)(2-pyridyl)methoxy]piperidino]butanoic acid, that is excellent in anti-histaminic activity and anti-allergic activity, is low in acid addition salt hygroscopic property, and is excellent in physicochemical stability, and to provide a preparation thereof. SOLUTION: Provided is a benzene sulfonic acid salt of an optically active piperidine derivative, represented by formula (I), whose absolute configuration is in (S) form. Also provided is a synthesis method in which an optically active (S)-4-[(4-chlorophenyl)(2-pyridyl)methoxy]piperidine (IV) obtained by inducing an intermediate (±)-4-[(4-chlorophenyl)(2-pyridyl)methoxy]piperidine into a diastereomeric salt and optically resolving the same by fractional crystallization method, is used as the intermediate. COPYRIGHT: (C)2016,JPOandINPIT
