4.1 Article

2,1-Benzothiazine 2,2-Dioxides. 1. Synthesis, Structure, and Analgesic Activity of 1-R-4-Hydroxy-2,2-Dioxo-1H-2λ6,1-Benzothiazine-3-Carboxylic Acid Esters

Journal

CHEMISTRY OF HETEROCYCLIC COMPOUNDS
Volume 49, Issue 9, Pages 1378-1383

Publisher

SPRINGER
DOI: 10.1007/s10593-013-1388-9

Keywords

2,1-benzothiazines; esters; acylation; analgesic activity; heterocyclization

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A preparative method for the synthesis of a series of 1-R-4-hydroxy-2,2-dioxo-1H-2 lambda(6),1-benzothiazine-3-carboxylates has been developed. The special features of the steric structure for compounds of this class have been studied on the example of the 1-N-methyl derivative. Results of studying the analgesic properties of the substances obtained are given.

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