The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2000
Filed:
Sep. 16, 1997
Chung Keun Rhee, Seoul, KR;
Myung Xik Xiang, Kyungkee-do, KR;
Byoung Chool Suh, Seoul, KR;
Kwang Hyuk Lee, Kyungkee-do, KR;
Youn Ha Lee, Kyungkee-do, KR;
Young Gi Kim, Seoul, KR;
Cheil Jedang Corp., Seoul, KR;
Abstract
A phosphodiesterase IV inhibiting cathecol derivatives of the general formula I: ##STR1## or a pharmaceutically acceptable salt thereof in which R1 is C.sub.1-7 alkyl; C.sub.3-7 cycloalkane; phenyl optionally substituted with lower alkyl lower alkoxy, nitro or halogen; pyrimidine optionally substituted with lower alkyl, lower alkoxy, nitro or halogen; or pyridine optionally substituted with lower alkyl, lower alkoxy, nitro or halogen; X, Y and Z are each independently oxygen, nitrogen or sulfur optionally substituted with C.sub.1-7 alkyl, C.sub.3-7 cycloalkane or phenyl; W is oxygen or sulfur is disclosed. In addition, a process for producing the compound of the general formula I and a pharmaceutical composition containing pharmaceutically effective amount of the compound of the general formula I are disclosed.