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Serving hundreds of leading biopharmaceutical companies globally:

Fish and Richardson
Queensland Health
Cantor Fitzgerald

Generated: April 25, 2018

DrugPatentWatch Database Preview

Details for Patent: 3,971,802

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Title: Certain N'-alkyl-N'-(2'-alkoxycarbonylbenzenesulfonyl)-N-(2-thiazolyl)glycineami des
Abstract:A process for the synthesis of N-aryl-3,4-dihydro-2-alkyl-4-oxo-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxides by treatment of N-aryl-N'-alkyl-N'-(2'-alkoxycarbonylbenzenesulfonyl)glycineamides, useful intermediates for said process, with an alkali or alkaline earth metal hydride in a reaction-inert solvent at 50.degree.-150.degree. C., said products being antiinflammatory agents.
Inventor(s): Lombardino; Joseph G. (Niantic, CT)
Assignee: Pfizer Inc. (New York, NY)
Filing Date:Apr 04, 1975
Application Number:05/565,230
Claims:1. A compound of the formula: ##SPC8##

wherein R.sub.1 is selected from the group consisting of; 2-thiazolyl and 4,5-dimethyl-2-thiazolyl;

R.sub.2 is alkyl having from 1 to 3 carbon atoms;

X is selected from the group consisting of hydrogen, methyl, methoxy, fluoro, chloro and bromo and

R.sub.3 is alkyl having from 1 to 3 carbon atoms.

2. A compound of claim 1 wherein X is hydrogen and R.sub.2 and R.sub.3 are each methyl.

3. The compound of claim 2 wherein R.sub.1 is 2-thiazolyl.

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Serving hundreds of leading biopharmaceutical companies globally:

Fish and Richardson
Chinese Patent Office
US Department of Justice
Daiichi Sankyo
Queensland Health

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