<i>N</i>-Methylphenothiazine <i>S</i>-Oxide Enabled Oxidative C(sp<sup>2</sup>)–C(sp<sup>2</sup>) Coupling of Boronic Acids with Organolithiums via Phenothiaziniums
we report the development of a transition-metal-free oxidative C(sp2)–C(sp2) coupling of readily available boronic acids and organolithiums via phenothiazinium ions. Various biaryl, styrene, and diene derivatives were obtained using this reaction system. The key to this process is N-methylphenothiazine S-oxide (PTZSO), which allows efficient conversion of boronic acids to phenothiazinium ions. The mechanism
[EN] HETEROCYCLIC COMPOUNDS AS EZH2 INHIBITORS<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES EN TANT QU'INHIBITEURS DE EZH2
申请人:PIRAMAL ENTPR LTD
公开号:WO2015104677A1
公开(公告)日:2015-07-16
The present invention provides a compound of formula I, or an isotopic form, a stereoisomer, a tautomer, a pharmaceutically acceptable salt, a solvate, a polymorph, a prodrug, N-oxide or S-oxide thereof; and processes for their preparation. The invention further relates to pharmaceutical compositions containing the compounds and their use in the treatment of diseases or disorders mediated by EZH2 (enhancer of zeste homolog 2), particularly cancer.
Synthesis of Proline Analogues via Rh-Catalyzed Asymmetric Conjugate Addition
作者:Emma K. Edelstein、Danica A. Rankic、Caroline C. Dudley、Spencer E. McMinn、Donovon A. Adpressa
DOI:10.1021/acscatal.0c04648
日期:2021.1.15
An enantio- and diastereoselective Rh-catalyzed conjugate addition reaction for the synthesis of proline analogues is reported. A high-throughput experimentation campaign was used to identify an efficient chiral catalyst which was able to afford the desired products in high yield and with high levels of diastereo- and enantioselectivity. This method was used to afford a range of 3-substituted proline
Application of the Miyaura–Hayashi rhodium-catalysed addition of aryl boronic acids to acyclic unsaturated esters featuring basic centres to yield γ-amino butyric acids incorporating a substituted β-phenyl group is described. Unoptimised isolated yields and enantiomeric excesses vary from moderate to excellent, and the method tolerates a variety of substitution patterns and a range of functionality
Electrophilic C-H borylation of arenes using boron triiodide has been developed. This reaction proceeded smoothly in the absence of additives, and the diiodoboryl group was installed at the most sterically accessible carbon, where the HOMO is localized to a certain extent. Moreover, regioselective multiple borylation of polycyclic aromatic compounds was achieved by using excess boron triiodide. The