Base-Mediated Anti-Markovnikov Hydroamidation of Vinyl Arenes with Arylamides
作者:Ayushee、Monika Patel、Priyanka Meena、Kousar Jahan、Prasad V. Bharatam、Akhilesh K. Verma
DOI:10.1021/acs.orglett.0c04084
日期:2021.1.15
anti-Markovnikov hydroamidation of vinyl arenes with arylamides to furnish the arylethylbenzamides with excellent chemo- and regioselectivity. The reaction tolerates an extensive variety of functional groups and has been successfully extended with electronically varied handles, aminobenzamides, electron-rich/electron-deficient heterocyclic amides, and vinyl arenes to afford the hydroamidated products.
Discovery of the Novel 1<i>H</i>-Pyrrolo[2,3-<i>b</i>]pyridine Derivative as a Potent Type II CDK8 Inhibitor against Colorectal Cancer
作者:Xing Xing Zhang、Yun Xiao、Yao Yao Yan、Yu Meng Wang、Han Jiang、Lei Wu、Jing-bo Shi、Xin Hua Liu
DOI:10.1021/acs.jmedchem.2c00820
日期:2022.9.22
Few targeted drugs were approved for treatment of colorectalcancer (CRC). Cyclin-dependent kinase 8 played a vital role in regulating transcription and was a key colorectal oncogene associated to colorectalcancer. Here, through de novo drug design and in depth structure–activity relationship analysis, title compound 22, (3-(3-(1H-pyrrolo[2,3-b]pyridin-5-yl)phenyl)-N-(4-methyl-3-(trifluoromethyl)phenyl)propenamide)
很少有靶向药物被批准用于治疗结直肠癌(CRC)。细胞周期蛋白依赖性激酶 8 在调节转录中起重要作用,是与结直肠癌相关的关键结直肠癌基因。在这里,通过从头药物设计和深入的构效关系分析,标题化合物22 , (3-(3-(1 H -pyrrolo[2,3- b ]pyridin-5-yl)phenyl)- N -( 4-methyl-3-(trifluoromethyl)phenyl)propenamide),被发现是一种有效的 II 型 CDK8 抑制剂,它表现出有效的激酶活性,IC 50值 48.6 nM,可显着抑制体内 CRC 异种移植物中的肿瘤生长。进一步的机制研究表明,它可以靶向 CDK8 间接抑制 β-catenin 活性,从而导致 WNT/β-catenin 信号下调并诱导 G2/M 和 S 期细胞周期停滞。更重要的是,标题化合物表现出低毒性和良好的生物利用度 ( F = 39.8
Diprotonative stabilization of ring-opened carbocationic intermediates: conversion of tetrahydroisoquinoline to triarylmethanes
作者:Hiroaki Kurouchi
DOI:10.1039/d0cc01969k
日期:——
Superacid-promoted conversion of tetrahydroisoquinolines to triarylmethanes via tandem reactions of C–N bond scission, Friedel–Crafts alkylation, C–O bond scission, and electrophilic aromatic amidation was developed. Dication formation was important for stabilizing the ring-opened carbocationic intermediate, which is a new role for diprotonation in reaction mechanisms.
Enantioselective, Copper-Catalyzed Alkynylation of Ketimines To Deliver Isoquinolines with α-Diaryl Tetrasubstituted Stereocenters
作者:Srimoyee Dasgupta、Jixin Liu、Clarissa A. Shoffler、Glenn P. A. Yap、Mary P. Watson
DOI:10.1021/acs.orglett.6b02787
日期:2016.12.2
An enantioselective, copper-catalyzedalkynylation of cyclic α,α-diaryl ketiminium ions has been developed to deliver isoquinoline products with diaryl, tetrasubstituted stereocenters. The success of this reaction relied on identification of Ph-PyBox as the optimal ligand, i-Pr2NEt as the base, and CHCl3 as the solvent. A broad scope and functional group tolerance were observed. Notably, the use of