Superacid synthesized tertiary benzenesulfonamides and benzofuzed sultams act as selective hCA IX inhibitors: toward understanding a new mode of inhibition by tertiary sulfonamides
作者:Benoît Métayer、Agnès Martin-Mingot、Daniella Vullo、Claudiu. T. Supuran、Sébastien Thibaudeau
DOI:10.1039/c3ob41538d
日期:——
did not inhibit the widespread off target hCA II isoform and showed strong selectivity toward tumor-associated carbonic anhydrase isoform IX. A dramatic effect of the electronic and structural shape of the inhibitors on selectivity was demonstrated, confirming the non-zinc-bonding mode of inhibition of this class of sulfonamides. This work allowed identifying a highly selectivehCA IX inhibitor lead in
Ultrasound-assisted one-pot three-component synthesis of new isoxazolines bearing sulfonamides and their evaluation against hematological malignancies
作者:Aicha Talha、Cécile Favreau、Maxence Bourgoin、Guillaume Robert、Patrick Auberger、Lahcen EL Ammari、Mohamed Saadi、Rachid Benhida、Anthony R. Martin、Khalid Bougrin
DOI:10.1016/j.ultsonch.2021.105748
日期:2021.10
regioselective 1,3-dipolar cycloaddition. The present methodology capitalized on trichloroisocyanuric acid (TCCA) as a safe and ecological oxidant and chlorinating agent for the in-situ conversion of aldehydes to nitrileoxides in the presence of hydroxylamine hydrochloride, under ultrasound activation. These nitrileoxides could be engaged in 1,3-dipolar cycloadditionreactions with various alkene to
A Practical Source of Chlorodifluoromethyl Radicals. Convergent Routes to <i>gem</i>-Difluoroalkenes and -dienes and (2,2-Difluoroethyl)-indoles, -azaindoles, and -naphthols
作者:Pierre Salomon、Samir Z. Zard
DOI:10.1021/ol501063a
日期:2014.6.6
The preparation of O-octadecyl-S-chlorodifluoromethyl xanthate from chlorodifluoroacetic acid and its use as a convenient source of chlordifluoromethyl radicals is described. This reagent may be used to access gem-difluoroalkenes and -dienes, as well as (2,2-difluoroethyl)-indolines, -indoles, and -naphthols.
Radical Solution to the Alkylation of the Highly Base-Sensitive 1,1-Dichloroacetone. Application to the Synthesis of <i>Z</i>-Alkenoates and <i>E</i>,<i>E</i>-Dienoates
作者:Lucile Anthore、Shiguang Li、Lorenzo V. White、Samir Z. Zard
DOI:10.1021/acs.orglett.5b02681
日期:2015.11.6
A simple radical-based route to gem-alpha-dichloroketones, relying on the degenerative addition transfer of (S)-[3,3dichloro-2-oxopropyl]-O-ethyl dithiocarbonate (xanthate), is described. The adducts can then be converted into Z-enoates by exposure to Et3N in methanol. In the case of certain substrates, it was possible to form shipped dienoic acid and methyl E,E-dienoates.