Results 21 to 30 of about 1,143 (191)
Benzothiazines in Synthesis. A Total Synthesis of Pseudopteroxazole. [PDF]
ChemInform, 2005 An enantioselective total synthesis of the naturally occurring antitubercular agent pseudopteroxazole is described. The synthesis is organized around the use of a stereoselective, intramolecular addition of a sulfoximine carbanion to an alpha,beta-unsaturated ester to form an enantiomerically pure benzothiazine.
Michael, Harmata, Xuechuan, Hong
openaire +2 more sources
Efficient synthesis of benzothiazine and acrylamide compounds
Química Nova, 2010 This article describes the synthesis of the new (2Z)-2-(4-methoxybenzylidene)-6-nitro-4H -benzo[1,4]thiazin-3-one, (2Z)-2-(4-methoxybenzylidene)-4-methyl-6-nitro-4H-benzo[1,4]thiazin-3-one, (2Z)-6-amino-2-(4-methoxybenzylidene)-4H -benzo[1,4]thiazin-3 ...
Ana Maria Alves Souza +8 more
doaj +1 more source
Synthesis and bioassay of azolyl benzothiazine carboxamides [PDF]
AIP Conference Proceedings, 2020 Cyclic sulfonamides (sultams) gained importance due to their potential pharmaceutical activity. Amongst these, 1,2-benzothiazine-1,1-dioxide and their derivatives represent the most familiar class of non-steroidal anti- inflammatory drugs (NSAIDs) available in the market.
Siva Sankar, P. +3 more
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, 2016 An efficient synthesis of enantiopure 1,3-benzothiazines has been achieved by reaction of cyclic sulfenamides and alkylpropiolate or tosylacetylene catalyzed by cesium ...
Jean-François Lohier (1756900) +3 more
core +3 more sources
Synthesis of Some New 2-Methyl -1,4-benzothiazine-3(1H)- one Derivatives as Potential Vasodilators
E-Journal of Chemistry, 2004 The increase in the internal diameter of a blood vessel that results from relaxation of smooth muscle within the wall of the vessel is vasodilation. This causes an increase in blood flow and a decrease in systemic vascular resistance.
M. B. Deshmukh +2 more
doaj +1 more source
Synthesis, spectral characterization and biological evaluation of 4H-1,4-benzothiazines, their sulfones and ribofuranosides [PDF]
, 2012 Synthesis of heterocyclic compounds like benzothiazines has attracted attention in recent years due to their biological and industrial value. This article reflects up-to-date and comprehensive coverage of biochemical aspects of benzothiazines, their ...
Gautam, Naveen +3 more
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Methyl 2-(benzenesulfonamido)acetate
Acta Crystallographica Section E, 2009 The title compound, C9H11NO4S, is of interest as a precursor to biologically active benzothiazines. The crystal structure is stabilized by intermolecular N—H...O and C—H...O interactions.
Muhammad Nadeem Arshad +3 more
doaj +1 more source
Synthesis of Anthraquinone Mono- and Diboron Complexes with Near-Infrared Panchromatic Absorption. [PDF]
ChemistryAnthraquinone boron complexes bearing β‐iminoenolate ligand(s) exhibit strongly substituent‐dependent absorption properties. Unsubstituted monoboron and diboron complexes show sharp UV–Vis–NIR absorption spectra resulting from increased molecular rigidity induced by boron coordination.
Kubota Y +4 more
europepmc +2 more sources
Copper-Catalyzed Three-Component Tandem Cyclization for One-Pot Synthesis of 1,4-Benzothiazines
, 2016 A copper-catalyzed three-component tandem reaction has been developed for the convenient and practical synthesis of 1,4-benzothiazines. A variety of terminal alkynes and 2-iodo/bromophenyl isothiocyanates underwent this one-pot cyclization with aqueous ...
Xing-Guo Zhang (1734544) +3 more
core +1 more source
Rapid and Efficient Synthesis of 2-Amino-4H-benzothiazines
, 2016 The benzothiazine nucleus is a relatively unexplored class of compounds, from the standpoint of both synthetic chemistry and biological activity. We have developed a rapid, high-yielding synthesis of benzothiazines in which a precursor aryl thiourea is ...
Benjamin L. Miller (779464) +1 more
core +1 more source