Photoredox chemistry in the synthesis of 2-aminoazoles implicated in prebiotic nucleic acid synthesis
作者:Ziwei Liu、Long-Fei Wu、Andrew D. Bond、John D. Sutherland
DOI:10.1039/d0cc05752e
日期:——
Prebiotically plausible ferrocyanide–ferricyanide photoredox cycling oxidatively converts thiourea to cyanamide, whilst HCN is reductively homologated to intermediates which either react directly with the cyanamide giving 2-aminoazoles, or have the potential to do so upon loss of HCN from the system. Thiourea itself is produced by heating ammonium thiocyanate, a product of the reaction of HCN and hydrogen
Oxazolidinone compounds and compositions, and methods of using the same
申请人:Pharmacia & Upjohn Company
公开号:US06441005B1
公开(公告)日:2002-08-27
Oxazolidinones and methods for their synthesis are provided. Further provided are methods of making biologically active oxazolidinones as well as pharmaceutically acceptable compositions comprising the oxazolidinones. Oxazolidinones as disclosed herein can be readily synthesized and used in a variety of applications including use as antimicrobial agents. In one embodiment, a variety of thioamidomethyloxazolidinones and methods for their synthesis and use are provided.
[1,2,4]Triazolo[1,5-<i>a</i>]pyrimidine Phosphodiesterase 2A Inhibitors: Structure and Free-Energy Perturbation-Guided Exploration
作者:Gary Tresadern、Ingrid Velter、Andrés A. Trabanco、Frans Van den Keybus、Gregor J. Macdonald、Marijke V. F. Somers、Greet Vanhoof、Philip M. Leonard、Marieke B. A. C. Lamers、Yves E. M. Van Roosbroeck、Peter J. J. A. Buijnsters
DOI:10.1021/acs.jmedchem.0c01272
日期:2020.11.12
We describe the hit-to-lead exploration of a [1,2,4]triazolo[1,5-a]pyrimidine phosphodiesterase 2A (PDE2A) inhibitor arising from high-throughput screening. X-ray crystallography enabled structure-guided design, leading to the identification of preferred substructural components. Further rounds of optimization used relative binding free-energy calculations to prioritize different substituents from
我们描述了一种由高通量筛选引起的[1,2,4]三唑并[1,5- a ]嘧啶磷酸二酯酶2A(PDE2A)抑制剂的直接研究。X射线晶体学使结构导向设计成为可能,从而确定了首选的子结构组件。进一步的优化使用相对结合自由能计算来确定来自较大可及化学空间的不同取代基的优先级。对265种假定的PDE2A抑制剂进行了自由能扰动(FEP)计算,并合成了100种化合物,它们代表了较大的预期应用范围,可提供具有2340至0.89 nM的IC 50值的出乎意料的活性分子。铅化合物46由FEP计算得出的结果显示,PDE2A抑制IC 50为1.3±0.39 nM,相对于其他PDE酶具有约100倍的选择性,干净的细胞色素P450分布,体内靶标占有率,并有望进一步优化铅。
4-Hydroxy-3-quinolinecarboxamides with antiarthritic and analgesic activities
作者:Francois Clemence、Odile Le Martret、Francoise Delevallee、Josette Benzoni、Alain Jouanen、Simone Jouquey、Michel Mouren、Roger Deraedt
DOI:10.1021/jm00402a034
日期:1988.7
by the oral route as antiinflammatory agents in carrageenin-induced foot edema and adjuvant-induced arthritis and as analgesic agents in the acetic acid induced writhing test. Among the most active molecules, some have shown both analgesic and acute antiinflammatory activities. Others, such as compounds 24, 37, and 52, were only powerful peripherally acting analgesics. Compound 52, being active at 1