Photochemistry of the amide system. V. Synthetic photochemistry with heterocyclic anilides. Stereochemistry of the intramolecular 1,5-hydrogen shifts in nonoxidative photocyclization of benzo[b]thiophene-2-carboxanilides
研究了四个系列的苯并[ b ]噻吩-2-羧酸衍生物对结核分枝杆菌H37Ra(MTB)的体外和离体疗效。还对苯并[ b ]噻吩进行了体外抗多药结核分枝杆菌H37Ra(MDR-MTB)的测试,发现7b对A-和D-MDR-MTB / MTB具有高活性(MIC范围为2.73–22.86μg/ mL) )。还评估了所有苯并[ b ]噻吩对牛分枝杆菌BCG(BCG)的活性在有氧条件和氧气消耗条件下生长的。化合物8c和8g表现出显着的活性,MIC对休眠的BCG具有0.60和0.61μg/ mL的活性。针对人类癌细胞系HeLa,Panc-1和THP-1的低细胞毒性和高选择性指数数据表明,开发基于苯并[ b ]噻吩的1,3-二酮和黄酮类化合物是潜在的重要候选物质治疗分枝杆菌感染。分子对接研究DprE1(癸二烯基磷酸基-β- d-核糖-2'-表异构酶)的活性位点揭示了与天然配体在晶体结构中的相似结合模式,从而
COMPOUNDS HAVING PHOTOCHEMICALLY REMOVABLE PROTECTING GROUPS BASED ON AN ELECTROCYCLIC REACTION BETWEEN A CHROMOPHORE ATTACHED VIA AN ANILIDE GROUP TO A BENZOTHIOPHENE RING
申请人:MARQUETTE UNIVERSITY
公开号:US20130231484A1
公开(公告)日:2013-09-05
Disclosed herein are compounds having photoremovable protecting groups which are removed after the compounds absorbs light of a given wavelength and undergo an electrocyclic reaction between a chromophore in the compound attached via an anilide to a benzothiophene ring.
A methylation platform of unconventional inert aryl electrophiles: trimethylboroxine as a universal methylating reagent
作者:Boya Feng、Yudong Yang、Jingsong You
DOI:10.1039/d0sc01641a
日期:——
electrophiles is a highly important yet challenging task in catalytic methylation. Disclosed herein is a series of transition metal-catalyzed methylations of unconventional inert aryl electrophiles using trimethylboroxine (TMB) as the methylating reagent. This transformation features a broad substrate type, including nitroarenes, benzoic amides, benzoic esters, aryl cyanides, phenol ethers, aryl pivalates and aryl
Facile oxidation of electron-poor benzo[b]thiophenes to the corresponding sulfones with an aqueous solution of H2O2 and P2O5
作者:Dyeison Antonow、Teresa Marrafa、Irfaan Dawood、Tauheed Ahmed、Mohammad R. Haque、David E. Thurston、Giovanna Zinzalla
DOI:10.1039/b924333j
日期:——
A facile oxidation for the clean conversion of benzo[b]thiophenes to their corresponding sulfones is described employing an aqueous solution of H(2)O(2) and P(2)O(5); the solution can be prepared and stored on a multi-gram scale with a shelf-life of up to two weeks.
The challenging transamidation of unactivated tertiary amides using equivalent amounts of amines has been accomplished via cooperative acid/iodide catalysis. The method provides a novel manifold to re-route the reactivity of unactivated and unreactive N,N-dialkyl amides through reactive acyl iodide intermediates, representing a powerful new activation mode of unactivated amide bonds.
New compounds of the formula (I) ##STR1## in which R.sup.1 -R.sup.6 have the meanings given in the description, their preparation and use in plant protection, the protection of materials and in the field of human and veterinary medicine. Formula (I) gives a definition of the compounds which can be prepared by analogous processes, for example from suitable benzothiophene derivatives by oxidation.