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Serving hundreds of leading biopharmaceutical companies globally:

Queensland Health
US Department of Justice
Daiichi Sankyo
Argus Health

Generated: June 25, 2018

DrugPatentWatch Database Preview

Claims for Patent: 3,927,002

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Summary for Patent: 3,927,002
Title: N-(pyridyl)-N'-alkyl-N'-(2-alkoxycarbonylbenzenesulfonyl)-glycineamides and derivatives
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)
Application Number:05/462,212
Patent Claims: 1. A compound of the formula ##SPC9##

wherein R.sub.1 is selected from the group consisting of 2-pyridyl and 6-methyl-2-pyridyl;

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-pyridyl.

4. The compound of claim 2 wherein R.sub.1 is 6-methyl-2-pyridyl.

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Serving hundreds of leading biopharmaceutical companies globally:

Boehringer Ingelheim
Johnson and Johnson
US Army
Chinese Patent Office

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