Novel antihistaminic piperidine derivatives and intermediates for the preparation thereof
申请人:——
公开号:US20030022919A1
公开(公告)日:2003-01-30
This invention relates to novel piperidine derivatives of formula (I) and a process for the preparation thereof.
1
wherein
R
1
is H or C
1
-C
6
alkyl wherein the C
1
-C
6
alkyl moiety is straight or branched;
R
2
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.