N-(5-Substituted) thiophene-2-alkylsulfonamides as potent inhibitors of 5-lipoxygenase
Compound 4k N-[5-(4-fluoro)phenoxythien-2-yl]methanesulfonamide is representative of a new class of potent inhibitors of 5-lipoxygenase (5-LO). These versatile compounds exhibit dose-dependent inhibition of 5-LO with IC50s ranging from 20-100 nM in the rat basophilic leukemia (RBL-1) cell homogenate assay and submicromolar IC50s in both the RBL-1 and human peripheral blood leukocyte (PBL) whole cell assays. Compound 4k also showed significant anti-inflammatory activity in the adjuvant arthritic rat at an oral dose of 3 mg/kg.
Beers, Scott A.,Malloy, Elizabeth A.,Wu, Wei,Wachter, Michael,Ansell, Justin,Singer, Monica,Steber, Michele,Barbone, Arminda,Kirchner, Thomas,Ritchie, David,Argentieri, Dennis
p. 779 - 786
(2007/10/03)
SYNTHESIS OF SUBSTITUTED THIENOTHIAZOLES AND INDOLOTHIAZOLES
Alkylene-, halo-, and aryl-substituted 2-methylthienothiazoles were obtained by the action of phosphorus pentasulfide on the corresponding 2-acetylamino-3-bromo- or 2-acetylamino-3-hydroxythiophenes in an organic solvent with heating. 2-Oximes of halo- and methyl-substituted isatins were converted by reduction and acetylation into 2-hydroxy-3-acetylaminoindoles, from which 2-methylindolo-thiazoles were obtained by the action of phosphorous pentasulfide with heating in xylene.
Pinkin, L. D.,Dzyubenko, V. G.,Abramenko, P. I.,Shpileva, I. P.
p. 345 - 352
(2007/10/02)
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