Benzo[ d ]thiazol-2-yl(piperazin-1-yl)methanones as new anti-mycobacterial chemotypes: Design, synthesis, biological evaluation and 3D-QSAR studies
作者:Sahaj Pancholia、Tejas M. Dhameliya、Parth Shah、Pradeep S. Jadhavar、Jonnalagadda Padma Sridevi、Perumal Yogeshwari、Dharmarajan Sriram、Asit K. Chakraborti
DOI:10.1016/j.ejmech.2016.03.060
日期:2016.6
The benzo[d]thiazol-2-yl(piperazin-1-yl)methanones scaffold has been identified as new anti-mycobacterial chemotypes. Thirty-six structurally diverse benzo[d]thiazole-2-carboxamides have been prepared and subjected to assessment of their potential anti-tubercular activity through in vitro testing against Mycobacterium tuberculosis H37Rv strain and evaluation of cytotoxicity against RAW 264.7 cell lines
苯并[ d ]噻唑-2-基(哌嗪-1-基)甲烷酮支架已被鉴定为新的抗分枝杆菌化学型。已经制备了三十六种结构多样的苯并[ d ]噻唑-2-羧酰胺,并通过针对结核分枝杆菌H 37 Rv菌株的体外测试以及针对RAW 264.7细胞系的细胞毒性评估了其潜在的抗结核活性。十七种化合物显示出具有低(1–10)μM范围的MIC的抗分枝杆菌潜力。5-三氟甲基苯并[ d] thiazol-2-yl(piperazin-1-yl)methanenes成为最有希望的结果,可产生6个阳性结果(2.35-7.94μM),并且具有低细胞毒性(在50μg/ mL浓度下抑制率小于50%)。这些命中的治疗指数为8–64。建立了定量结构活性关系,采用显示出高预测性的统计可靠的CoMFA模型([Rp[RËd2个=0.718,[RñCv2个=0.995)。
Direct amidation of azoles with formamides via metal-free C–H activation in the presence of tert-butyl perbenzoate
作者:Tao He、Hongji Li、Pinhua Li、Lei Wang
DOI:10.1039/c1cc13086b
日期:——
A novel and simple method for the direct amidation of azoles with formamides has been developed. The reaction could occur smoothly in the presence of tert-butyl perbenzoate (TBPB) as an oxidant under metal- and base-free conditions. Direct dehydrogenativecross-coupling of formamides and azoles generated the corresponding products in good yields.
S<sub>8</sub>-Catalyzed triple cleavage of bromodifluoro compounds for the assembly of N-containing heterocycles
作者:Shuilin Deng、Haohua Chen、Xingxing Ma、Yao Zhou、Kai Yang、Yu Lan、Qiuling Song
DOI:10.1039/c9sc01333d
日期:——
cleavage of three C–X bonds, including two inert C(sp3)–F bonds on bromodifluoroacetamides, while leaving C–C bonds intact. This strategy will undoubtedly further consummate the role of halo difluoro compounds and enrich both fluorine chemistry and pharmaceutical sciences.
Palladium-catalyzed intermolecular carbonylative cross-coupling of heteroaryl C(sp<sup>2</sup>)–H bonds with amines: an efficient strategy for oxidative aminocarbonylation of azoles
作者:Qi Xing、Hui Lv、Chungu Xia、Fuwei Li
DOI:10.1039/c7cc03274a
日期:——
An efficient palladium-catalyzed oxidative aminocarbonylation of azoles has been developed. This system allows for intermolecular carbonylative cross-coupling of aromatic C(sp2)–H bonds with simple amines, which has often been asked for, but has not been realized so far. It provides a straightforward approach to a variety of azol-2-amides.