5446-77-5Relevant articles and documents
Sulfonamide compound and synthesis method and application thereof
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Paragraph 0082-0085, (2019/04/02)
The invention discloses a synthesis method of a sulfonamide compound represented in a formula (2). According to the method, diazonium salt is used as a reaction raw material, and under the action of an inorganic nitrogen reagent, an inorganic sulfur dioxide reagent, an additive and a phosphine reagent, the diazonium salt is reacted in a solvent at 60-100 DEG C to obtain various sulfonamide compounds. According to the method inorganic salt is used as a nitrogen atom source and a sulfur dioxide source under a metal-free catalytic condition to construct the sulfonamide compound through one step,thereby avoiding the conventional multi-step synthesis of sulfonamide by condensing unstable acid chloride and amine; and the developed sulfonamide synthesis method can be further applied to the synthesis of the arthritis drug celecoxib and the psychotropic drug sulpiride.
Metal-free construction of primary sulfonamides through three diverse salts
Wang, Ming,Fan, Qiaoling,Jiang, Xuefeng
supporting information, p. 5469 - 5473 (2019/01/03)
In this report, the first metal-free construction of primary sulfonamides through a direct three-component reaction of sodium metabisulfite, sodium azide and aryldiazonium has been established. Readily available inorganic Na2S2O5 and NaN3 were applied as the sulfur dioxide surrogate and nitrogen source respectively. The widely used sulfonamide drugs Celecoxib and Sulpiride, which possess multiple heteroatoms and active hydrogen containing functional groups, are efficiently installed with -SO2NH2 groups at a late stage. Control experiments and kinetic studies demonstrated that aryl radicals, sulfonyl radicals and conjugated phosphine imine radicals are involved in this transformation.
Synthesis and biological evaluation of 2-phenylpyran-4-ones: A new class of orally active cyclooxygenase-2 inhibitors
Caturla, Francisco,Jiménez, Juan-Miguel,Godessart, Núria,Amat, Mercè,Cárdenas, Alvaro,Soca, Lídia,Beleta, Jordi,Ryder, Hamish,Crespo, María I.
, p. 3874 - 3886 (2007/10/03)
A series of 2-phenylpyran-4-ones were prepared and evaluated for their ability to inhibit cyclooxygenase-2 (COX-2). Extensive structure-activity relationship work was carried out within this series, and a number of potent and selective COX-2 inhibitors were identified. Compounds having a p-methylsulfone group at the 2-phenyl ring showed the best COX-2 inhibitory activity. The introduction of a substituted phenoxy ring at position 3 enhanced both the in vitro and in vivo activity within the series. A selected group of 3-phenoxypyran-4-ones exhibited excellent activity in an experimental model of pyresis. The in vivo antiinflammatory activity of these compounds was confirmed with the evaluation of their antiarthritic and analgesic effectiveness. Moreover, their pharmacokinetic profile in rats is compatible with a once a day administration by oral route in humans. Within this novel series, compounds 21, 31, 34, and 35 have been selected for further preclinical and clinical evaluation.
