作者:Qian Wan、Shiwu Li、Qiang Kang、Yaofeng Yuan、Yu Du
DOI:10.1021/acs.joc.9b02243
日期:2019.12.6
An enantioselective three-component cascade reduction-Michael additionreaction catalyzed by chiral-at-metal Rh(III) complexes has been developed. With a Hantzsch ester as the hydride source, a number of malononitrile derivatives were prepared in good yields and excellent enantioselectivities. A model that accounts for the origin and influence factors of the stereoselectivity has been proposed based
This work presents the synthesis of Co3+-Zn2+} and Co3+-Cd2+} heterometallic coordination networks. These networks are originated from two unique Co3+-based metalloligands containing appended arylcarboxylic acid groups at the strategically placed positions. Such appended arylcarboxylate groups coordinate the secondary metal ions, Zn2+ and Cd2+, to afford distinct three-dimensional networks. All four networks display orderly arrangement of secondary metal ions and unique network topologies including an unprecedented one. These networks have been shown to act as the heterogeneous and reusable catalysts for the Knoevenagel condensation reactions and cyanation reactions of assorted aldehydes. Cyanation reactions nicely demonstrate the substrate size-exclusion catalysis.
Molecular modeling of drug-pathophysiological Mtb protein targets: Synthesis of some 2-thioxo-1, 3-thiazolidin-4-one derivatives as anti-tubercular agents
novel 2 - thioxo - 1 , 3 - thiazolidin - 4 - one derivatives ( 5a - 5t ) were synthesized and evaluated for their antitubercular activity. The structure of the compounds was confirmed by IR, NMR and Mass Spectroscopy methods. In addition, single-crystal X-ray diffraction was performed for compound 5a . All the synthesized compounds were screened for their in -vitro antimycobacterial activity against
摘要 合成了20种新型2-thioxo-1,3-thiazolidin-4-one衍生物(5a-5t)并评价了它们的抗结核活性。化合物的结构通过红外、核磁共振和质谱方法确认。此外,对化合物5a进行了单晶X射线衍射。所有合成的化合物均通过 Alamar Blue 测定法筛选其对 MTB(H37RV,ATCC 编号:27294)的体外抗分枝杆菌活性。化合物5r、5k、5t显示出最有效的体外活性,MIC分别为0.05、0.1、0.2μg/ml浓度,其比标准品更有效。进行分子对接和动力学模拟以找出标题化合物的合理机制。
Synthesis, 3D-pharmacophore modelling and 2D-QSAR study of new pyridine-3-carbonitriles as vasorelaxant active agents
作者:Aladdin M. Srour、Dina H. Dawood、Dalia O. Saleh
DOI:10.1039/d0nj06319c
日期:——
A new set of pyridine-3-carbonitriles (3a–v) conjugated with various five-membered ring systems at pyridinyl C-6 were designed and synthesized as vasorelaxant active agents.
Synthesis of Polyfunctionalized Pyrroles via a Tandem Reaction of Michael Addition and Intramolecular Cyanide-Mediated Nitrile-to-Nitrile Condensation
作者:Sankar K. Guchhait、Shailendra Sisodiya、Meenu Saini、Yesha V. Shah、Gulshan Kumar、Divine P Daniel、Neha Hura、Vikas Chaudhary
DOI:10.1021/acs.joc.8b00465
日期:2018.5.18
A new approach for the synthesis of tetrasubstituted/functionalized NH-pyrroles from gem-diactivated acrylonitriles and TMSCN has been developed. The strategy utilizes the generation of vic-dinitrile viaMichaeladdition and cyanide-mediated nitrile-to-nitrile cyclocondensation, which proceed in tandem guided by manifold roles of “CN”. An extended application to the production of fused pyrrole has