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Generated: February 18, 2018

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Title: Isoxazole intermediate compounds
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:05/565,229
Claims:1. A compound of the formula: ##SPC8##

wherein R.sub.1 is 5-methyl-3-isoxazolyl;

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

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

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

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

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