Highly selective cross-coupling reactions of aryl(halo)silanes with aryl halides: A general and practical route to functionalized biaryls
摘要:
The palladium catalyzed cross-coupling reaction of aryl halides with aryl(halo)silanes (halogen= F, Cl) gives good yields of unsymmetrical biaryls and p-terphenyls. The reaction takes place smoothly in N,N-dimethylformamide in the presence of an appropriate palladium catalyst and potassium fluoride. Since this reaction is tolerant of a variety of reactive functional groups, highly functionalized 4,4'-, 3,4'-, 2,4'- and even sterically crowded 2,2'-disubstituted biaryls can be obtained in moderate to high yields. The synthetic utility of the method has been demonstrated by its application to a short synthesis of liquid crystals. Mechanistic aspects of transmetalation of an aryl(fluoro)silicate intermediate with a palladium complex are discussed on the basis of the substituent effects on the rate of the cross-coupling reactions.
POLARIZING PLATE PROTECTIVE FILM, POLARIZING PLATE, AND DISPLAY DEVICE
申请人:FUJIFILM Corporation
公开号:US20170226317A1
公开(公告)日:2017-08-10
A polarizing plate protective film which prevents deterioration of polarization performance in a high temperature, high humidity environment, and a polarizing plate and display device using the film including a compound represented by the following General Formula (I).
(X-L
n
z
General Formula (I)
X represents a formyl group, a boronic acid group, or a group represented by the following General Formula (I-B) or a group represented by the following General Formula (I-C), where L represents a single bond or divalent linking group, and n represents an integer equal to or greater than 2. When n is 2, Z represents a single bond or a divalent group, and when n≧3, Z represents an n-valent group.
R
A
and R
B
represent an alkyl group, a cycloalkyl group, an aryl group, or an acyl group. R
A
and R
B
may be bonded to each other to form a ring. * represents a bond to be bonded to L.
一种偏光板保护膜,可防止在高温高湿环境中偏光性能的恶化,以及使用包括下述一般式(I)所代表的化合物的偏光板和显示装置。
(X-L
n
z
一般式(I)
X代表甲酰基、硼酸基或由下述一般式(I-B)所代表的基团或由下述一般式(I-C)所代表的基团,其中L代表单键或二价连接基团,n代表大于或等于2的整数。当n为2时,Z代表单键或二价基团,当n≧3时,Z代表n价基团。
RA和RB代表烷基、环烷基、芳基或酰基。RA和RB可以相互连接形成环。*代表要连接到L的键。
Betti reaction enables efficient synthesis of 8-hydroxyquinoline inhibitors of 2-oxoglutarate oxygenases
作者:C. C. Thinnes、A. Tumber、C. Yapp、G. Scozzafava、T. Yeh、M. C. Chan、T. A. Tran、K. Hsu、H. Tarhonskaya、L. J. Walport、S. E. Wilkins、E. D. Martinez、S. Müller、C. W. Pugh、P. J. Ratcliffe、P. E. Brennan、A. Kawamura、C. J. Schofield
DOI:10.1039/c5cc06095h
日期:——
A Betti reaction was used for efficient generation of 2OG oxygenase inhibitors, including for KDM4 demethylases.
使用Betti反应高效生成2OG氧化酶抑制剂,包括KDM4去甲基酶。
Dissection of Complex Molecular Recognition Interfaces
作者:Christopher A. Hunter、Maria Cristina Misuraca、Simon M. Turega
DOI:10.1021/ja1084783
日期:2011.1.26
relationship that governs cooperativity in the assembly of complexmolecularrecognitioninterfaces. Specifically, variations in the chemical structures of the complexes have allowed us to change the supramolecular architecture, conformational flexibility, geometric complementarity, the number and nature of the H-bond interactions, and the overall stability of the complex. The free energy contributions
配备有外围 H 键功能的锌卟啉和吡啶配体家族的合成提供了获得各种密切相关的超分子复合物的途径,这些复合物具有 0 到 4 个分子内 H 键。自动紫外/可见滴定系统用于表征 120 种不同的复合物,这些数据用于构建大量不同的化学双突变循环,以量化分子内 H 键相互作用。结果探讨了在复杂分子识别界面组装中控制协同性的定量构效关系。具体来说,复合物化学结构的变化使我们能够改变超分子结构、构象灵活性、几何互补性、氢键相互作用的数量和性质,以及复合物的整体稳定性。来自单个氢键的自由能贡献是可加的,并且在形成分子内相互作用的有效摩尔浓度中,结构几乎没有变化。在几何上不可能的复合物中没有观察到分子内 H 键,但没有出现极好的几何互补性导致非常高的亲和力的情况。同样,构象灵活性的变化似乎对有效摩尔浓度 (EM) 的影响有限。使用双突变循环检查的所有 48 种分子内相互作用中发现的主要变化是,分子内羧酸酯-苯酚
2-Thioxothiazolidin-4-one Analogs as Pan-PIM Kinase Inhibitors
作者:Yanghwan Yun、Victor Sukbong Hong、Seungik Jeong、Hyeonseong Choo、Shin Kim、Jinho Lee
DOI:10.1248/cpb.c21-00264
日期:2021.9.1
derivatives were synthesized and evaluated as potent pan-PIM kinaseinhibitors. Optimized compounds showed single-digit nanomolar IC50 values against all three PIM kinases with high selectivity over 14 other kinases. Compound 17 inhibited the growth of Molm-16 cell lines (EC50 = 14 nM) and modulated the expression of pBAD and p4EBP1 in a dose-dependent manner. Fullsize Image
IMMUNE CHECKPOINT INHIBITORS, COMPOSITIONS AND METHODS THEREOF
申请人:Polaris Pharmaceuticals, Inc.
公开号:US20180065917A1
公开(公告)日:2018-03-08
The present invention provides synthesis, pharmaceutically acceptable formulations and uses of compounds in accordance with Formula (I), or a stereoisomer, a tautomer or a pharmaceutically acceptable salt thereof.
For Formula (I) compounds R
1
, R
2
, X
1
, Y
1
and n are as defined in the specification. The inventive Formula (I) compounds are inhibitors of the PD-1/PD-L1 protein/protein binding or functional interaction and find utility in any number of therapeutic applications, including but not limited to treatment of proliferative disorders such as cancer and infectious diseases.