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:
Jan. 22, 1980
Filed:
Feb. 09, 1978
Kurt Eichenberger, Therwil, CH;
Hans Bosshard, Basel, CH;
Niklaus Buhler, Rheinfelden, CH;
Richard Goschke, Bottmingen, CH;
Knut A Jaeggi, Basel, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Novel benzoheterocyclylglyoxylic acid derivatives of the formula ##STR1## in which Z is free, etherified or acylated hydroxyl, X is thio or oxy, R is free or etherified hydroxyl, R.sub.1 is lower alkyl, cycloalkyl, hydroxyl, lower alkoxy, substituted or unsubstituted phenoxy, substituted or unsubstituted amino, acyl, carboxyl, halogen, nitro or, if Z is acylated hydroxyl and/or X is oxy, hydrogen, R.sub.2 is hydrogen, lower alkyl, hydroxyl or halogen and R.sub.3 and R.sub.4 are each hydrogen or lower alkyl, or in which two adjacent radicals R.sub.1, R.sub.2, R.sub.3 and R.sub.4 together form lower alkylene having 3 to 5 chain carbon atoms or 1,4-butadienylene and the other two radicals are each hydrogen, and their pharmaceutically acceptable salts are useful as anti-allergic agents.