Antihistaminic piperidine derivatives and intermediates for the preparation thereof
申请人:Aventis Pharmaceuticals Inc.
公开号:US06683094B2
公开(公告)日:2004-01-27
This invention relates to novel piperidine derivatives of formula (I) and a process for the preparation thereof.
wherein
R1 is H or C1-C6alkyl wherein the C1-C6alkyl moiety is straight or branched;
R2 is —COOH or —COOalkyl wherein the alkyl moiety has from 1 to 6 carbon atoms and is straight or branched; or
stereoisomers or pharmaceutically acceptable acid addition salt thereof.