先前的高通量筛选研究导致发现了两种新型的非脂质样化学型,作为Toll样受体4(TLR4)激动剂。探索了这些化学型之一,嘧啶并[5,4- b ]吲哚相对于TLR4依赖性细胞因子/趋化因子的产生的结构-活性关系趋势,从而产生了半优化的铅(化合物1),为进一步研究提供了起点优化研究。在该报告中,使用鼠类和人类TLR4报告基因细胞,原代小鼠骨髓来源的树突状细胞和人外周血单核细胞对属于三个结构修饰区域的化合物的生物活性进行了评估。在C8位置带有某些芳基的化合物,例如苯基(36)和β-萘基(39)的效力显着大于化合物1。化合物36在亚微摩尔浓度下显示人TLR4激动剂活性。计算分析表明,这些C8-芳基衍生物的效力提高可能是由于TLR4 /髓样分化蛋白2(MD-2)复合物界面上其他结合相互作用的结果。
Glycinamide hydrochloride as a transient directing group: Synthesis of 2-benzylbenzaldehydes by C(sp<sup>3</sup>)−H arylation
作者:Fei Wen、Zheng Li
DOI:10.1080/00397911.2020.1802759
日期:2020.11.16
Abstract Glycinamide hydrochloride as an inexpensive and commercially available transientdirectinggroup for the C(sp3)−Harylation of 2-methylbenzaldehydes is described. A series of practical 2-benzylbenzaldehydes bearing various functional groups are efficiently synthesized in satisfactory yield by this strategy. This method can also be extended to gram scale. Graphical Abstract
Polypeptides. Part XII. The preparation of 2-pyridyl esters and their use in peptide synthesis
作者:A. S. Dutta、J. S. Morley
DOI:10.1039/j39710002896
日期:——
amino-acid derivatives, and hydroxy-compounds) than the corresponding p-nitrophenyl esters. Evidence is presented that they are likely to be particularly useful in solid-phase peptide synthesis, and in the synthesis of O-peptides and depsipeptides.
excellent antitubercular activity and low cytotoxicity. Several of the compounds showed improved microsomal stability and lower plasma protein-binding, opening a new direction for further lead optimization. And we obtained compound 3o, which maintained good anti-tuberculosis activity (MIC = 8 nM) and presented better in vitro ADME/T and in vivo pharmacokinetic profiles than reported BTZ compound PBTZ169
Palladium-Catalyzed<i>β</i>-C−H Arylation of Ketones Using Amino Amide as a Transient Directing Group: Applications to Synthesis of Phenanthridinone Alkaloids
The direct arylation of aromatic and aliphatic ketones was carried out via palladium‐catalyzed inert C−H bond functionalization with 2‐amino‐N‐isopropyl‐acetamide as a new catalytic transient directing group. The reaction showed excellent functional group compatibility and site selectivity. We demonstrated that α‐amino amide forming N,N‐bidentate coordination with Pd catalyst is more favorable for
申请人:National University Corporation University of Toyama
公开号:US20140371291A1
公开(公告)日:2014-12-18
A novel serine racemase inhibitor exhibits sufficient activity and specificity. The serine racemase inhibitor includes one or more compounds selected from compounds respectively represented by the following general formulas [MM_1], [DR_1], [DR′_1], [LW_1], and [ED_1] as an active ingredient.