Highly Selective Hydrogenation of C═C Bonds Catalyzed by a Rhodium Hydride
作者:Yiting Gu、Jack R. Norton、Farbod Salahi、Vladislav G. Lisnyak、Zhiyao Zhou、Scott A. Snyder
DOI:10.1021/jacs.1c04683
日期:2021.6.30
Undermildconditions (room temperature, 80 psi of H2) Cp*Rh(2-(2-pyridyl)phenyl)H catalyzes the selectivehydrogenation of the C═C bond in α,β-unsaturated carbonyl compounds, including natural product precursors with bulky substituents in the β position and substrates possessing an array of additional functionalgroups. It also catalyzes the hydrogenation of many isolated double bonds. Mechanistic
在温和条件下(室温,80 psi H 2)Cp*Rh(2-(2-吡啶基)苯基)H催化α,β-不饱和羰基化合物(包括天然产物前体)中C=C键的选择性氢化在 β 位具有庞大的取代基,并且底物具有一系列额外的官能团。它还催化许多分离的双键的氢化。机理研究表明,不涉及自由基中间体,并且催化剂似乎是均相的,从而为类似氢化过程的现有方案提供了重要的互补性。
Discovery of a Potent and Selective CCR4 Antagonist That Inhibits T<sub>reg</sub> Trafficking into the Tumor Microenvironment
作者:Jeffrey J. Jackson、John M. Ketcham、Ashkaan Younai、Betty Abraham、Berenger Biannic、Hilary P. Beck、Minna H. T. Bui、David Chian、Gene Cutler、Raymond Diokno、Dennis X. Hu、Scott Jacobson、Emily Karbarz、Paul D. Kassner、Lisa Marshall、Jenny McKinnell、Cesar Meleza、Abood Okal、Deepa Pookot、Maureen K. Reilly、Omar Robles、Hunter P. Shunatona、Oezcan Talay、James R. Walker、Angela Wadsworth、David J. Wustrow、Mikhail Zibinsky
DOI:10.1021/acs.jmedchem.9b00506
日期:2019.7.11
the TME can potentiate antitumor immune responses. We developed a novel series of potent, orally bioavailable small molecule antagonists of CCR4. From this series, several compounds exhibited high potency in distinct functional assays in addition to good in vitro and in vivo ADME properties. The design, synthesis, and SAR of this series and confirmation of its in vivoactivity are reported.
Novel access to cyclohexane-1,4-diones and 1,4-hydroquinones via radical 1,2-acyl rearrangement on 2-(halomethyl)cyclopentane-1,3-diones using cobaloxime-mediated electroreduction or tributyltin hydride
作者:Hiroyuki Kawafuchi、Tsutomu Inokuchi
DOI:10.1016/s0040-4039(02)00163-6
日期:2002.3
hydroquinones 3, with the option of introducing alkyl and aryl substituents, was developed by radical 1,2-acyl rearrangement on 2-(halomethyl)cyclopentane-1,3-diones 1, accessible from 1,2-bis(trimethylsiloxy)cyclobutene and α-bromo ketone dimethyl acetals. The electroreduction of monoacetals of 1 in the presence of cobaloxime as a catalyst afforded the cyclohexane-1,4-dione monoacetals in good yields
The present invention relates to compounds of formula (I)
wherein X, R1, R2, R3, R4, R5, m, and n are defined in the specification are TRPV1 antagonists. Compositions comprising such compounds and methods for treating conditions and disorders using such compounds and compositions are also disclosed.