Palladium-Catalyzed Direct <i>ortho</i>-Acylation through an Oxidative Coupling of Acetanilides with Toluene Derivatives
作者:Zhangwei Yin、Peipei Sun
DOI:10.1021/jo302125h
日期:2012.12.21
A facile ortho-acylation of acetanilides by a Pd-catalyzed oxidative C–H activation was developed in which low toxic, stable, and commercially available toluene derivatives were first used as acylation reagents by a tandem reaction to form o-acylacetanilides with moderate to good yields. Inexpensive, safe, and environmentally benign TBHP was proved to be an effective oxidant for these transformations
Merging Photoredox with Palladium Catalysis: Decarboxylative <i>ortho</i>-Acylation of Acetanilides with α-Oxocarboxylic Acids under Mild Reaction Conditions
作者:Chao Zhou、Pinhua Li、Xianjin Zhu、Lei Wang
DOI:10.1021/acs.orglett.5b03192
日期:2015.12.18
temperature decarboxylative ortho-acylation of acetanilides with α-oxocarboxylic acids has been developed via a novel Eosin Y with Pd dual catalytic system. This dual catalytic reaction shows a broad substrate scope and good functional group tolerance, and an array of ortho-acylacetanilides can be afforded in high yields under mild conditions.
Highly Enantioselective Iridium-Catalyzed Hydrogenation of <i>o</i>-Amidophenyl Ketones Enabled by 1,2-Diphenylethylenediamine-Derived P,N,N-Ligands with Tertiary Amine Terminus
作者:Yin-Bo Wan、Xiang-Ping Hu
DOI:10.1021/acs.orglett.2c02316
日期:2022.8.12
A readily available and highly modular class of chiral P,N,N-ligands based on a structurally flexible nonchiral phosphine-amine framework with an opticallyactive 1,2-diphenylethylenediamine unit bearing a tertiary amine terminus as the chiral source have been developed and successfully applied in the Ir-catalyzed asymmetrichydrogenation of o-amidophenyl ketones. These tridentate P,N,N-ligands exhibited
Discovery and anti-tumor activity of 4-(benzylamino)-6-(3,5-dimethylisoxazol-4-yl)quinoline-2(1H)-one (CG13250), a potent, selective and orally bioavailable BET bromodomain inhibitor
作者:Jay Chauhan、Makoto Yoshioka、Sarah Pogash、Jeffrey W. Strovel、Steven Fletcher
DOI:10.1016/j.bmcl.2023.129220
日期:2023.4
extra-terminal domain (BET) proteins are epigenetic readers involved in the regulation of gene transcription. Inhibitors of the BET proteins, in particular BRD4, have demonstrated anti-tumour activities and efficacies in clinical trials. Herein, we describe the discovery of potent and selective inhibitors of BRD4, and demonstrate that the lead compound CG13250 is orallybioavailable and efficacious
Rational Modification of a Candidate Cancer Drug for Use Against Chagas Disease
作者:James M. Kraus、Christophe L. M. J. Verlinde、Mandana Karimi、Galina I. Lepesheva、Michael H. Gelb、Frederick S. Buckner
DOI:10.1021/jm801313t
日期:2009.3.26
Chagas disease is one of the major neglected diseases of the world. Existing drug therapies are limited, ineffective, and highly toxic. We describe a novel strategy of drug discovery of adapting an existing clinical compound with excellent pharmaceutical properties to target a pathogenic organism. The protein farnesyltransferase (PFT) inhibitor tipifarnib, now in phase III anticancer clinical trials, was previously found to kill Trypanosoma cruzi by blocking sterol 14 alpha-demethylase (14DM). We rationally developed tipifarnib analogues that display reduced affinity for human PFT to reduce toxicity while increasing affinity for parasite 14DM. The lead compound has picomolar activity against cultured T. cruzi and is efficacious in a mouse model of acute Chagas disease.