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.
本发明涉及一种新型
哌啶衍
生物的公式(I)及其制备方法。其中,R1是H或C1-C6烷基,其中C1-C6烷基基团是直链或支链;R2是-COOH或-COO烷基,其中烷基基团具有1至6个碳原子,并且是直链或支链;或其立体异构体或药学上可接受的酸加成盐。