Synthesis and structural studies of 3-alkylamino-pyrido[4,3-e]-1,2,4- thiadiazine 1,1-dioxides: A new class of heterocyclic compounds with therapeutical promises

P. De Tullio, R. Ouedraogos, L. Dupont, F. Somers, S. Boverie, J.-M. Dogné, J. Delarge, B. Pirotte

Research output: Contribution to journalArticlepeer-review

Abstract

3-Alkylamino-pyrido[4,3-e]-1,2,4-thiadiazine 1,1-dioxide represents a new class of heterocyclic compounds expressing important pharmacological properties. According to the position of the C=N double bond in the thiadiazine ring, this heterocyclic ring system may exist under three different tautomeric forms. By means of spectral and X-ray data collected from selected compounds, the most favourable tautomeric form adopted by 3- alkylamino-pyrido[4,3-e]-1,2,4-thiadiazine 1,1-dioxides devoid of an alkyl substituent in the 2- or in the 4-position was determined. The present study giving new insights in the geometrical and conformational aspects of pyridothiadiazinedioxides is important considering the pharmacological potentialities of this class of heterocyclic compounds.
Original languageEnglish
Pages (from-to)5419-5432
Number of pages14
JournalTetrahedron
Volume55
Issue number17
DOIs
Publication statusPublished - 23 Apr 1999

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