CATECHOL AMINO ACID DERIVATIVES AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

A phosphodiesterase IV inhibiting catechol derivative of general formula (I) or a pharmaceutically acceptable salt thereof in which R1, R2, R3, R4, R5 and W are as defined herein. In addition, a process for producing the compound of general formula (I) and a pharmaceutical composition containing pharmaceutically effective amount of the compound of general formula (I) are disclosed.