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:
Mar. 17, 1981
Filed:
Nov. 19, 1979
Hitoshi Uno, Takatsuki, JP;
Yasutaka Nagai, Muko, JP;
Katsuhiko Hino, Izumisano, JP;
Hideo Nakamura, Tenri, JP;
Dainippon Pharmaceutical Co., Ltd., Osaka, JP;
Abstract
Novel 4-(2'-pyridylamino)phenylacetic acid derivatives of the formula: ##STR1## wherein R.sub.1 is hydrogen, a halogen, a lower alkyl having 1 to 3 carbon atoms, or nitro, R.sub.2 is hydrogen, a halogen, or a lower alkyl having 1 to 3 carbon atoms, R.sub.3 is hydrogen, a halogen, or a lower alkyl having 1 to 3 carbon atoms, R.sub.4 is hydrogen or a lower alkyl having 1 to 3 carbon atoms, R.sub.5 is hydrogen or --CH.sub.2 CH.sub.2 OR.sub.6 wherein R.sub.6 is a lower alkyl having 2 or 3 carbon atoms and being substituted with 1 or 2 hydroxy groups, provided that R.sub.1 or R.sub.2 is not 4-halogen, or pharmaceutically acceptable salts thereof, and a process for the preparation thereof, pharmaceutical composition of said compounds, and a method of using said compounds as anti-inflammatory and analgesic agents. They have excellent anti-inflammatory and analgesic activities with an extremely weak ulcerogenicity in the gastrointestinal tract. Some of the compounds have superior inhibitory activity against chronic inflammation mediated by cellular immunity.