Iron-Facilitated Oxidative Radical Decarboxylative Cross-Coupling between α-Oxocarboxylic Acids and Acrylic Acids: An Approach to α,β-Unsaturated Carbonyls
The first Fe-facilitated decarboxylative cross-coupling reaction between α-oxocarboxylicacids and acrylic acids in aqueous solution has been developed. This transformation is characterized by its wide substrate scope and good functional group compatibility utilizing inexpensive and easily accessible reagents, thus providing an efficient and expeditious approach to an important class of α,β-unsaturated
High-Throughput Screening and Hit Validation of Extracellular-Related Kinase 5 (ERK5) Inhibitors
作者:Stephanie M. Myers、Ruth H. Bawn、Louise C. Bisset、Timothy J. Blackburn、Betty Cottyn、Lauren Molyneux、Ai-Ching Wong、Celine Cano、William Clegg、Ross. W. Harrington、Hing Leung、Laurent Rigoreau、Sandrine Vidot、Bernard T. Golding、Roger J. Griffin、Tim Hammonds、David R. Newell、Ian R. Hardcastle
DOI:10.1021/acscombsci.5b00155
日期:2016.8.8
The extracellular-related kinase 5 (ERK5) is a promising target for cancer therapy. A high-throughput screen was developed for ERK5, based on the IMAP FP progressive binding system, and used to identify hits from a library of 57 617 compounds. Four distinct chemical series were evident within the screening hits. Resynthesis and reassay of the hits demonstrated that one series did not return active
Chiral octahedral complexes of Co(<scp>iii</scp>) as catalysts for asymmetric epoxidation of chalcones under phase transfer conditions
作者:Vladimir A. Larionov、Elina P. Markelova、Alexander F. Smol'yakov、Tat'yana F. Savel'yeva、Victor I. Maleev、Yuri N. Belokon
DOI:10.1039/c5ra11760g
日期:——
Stereochemically inert and positively charged chiralcomplexes of Co(III) were shown to catalyze the asymmetric epoxidation of chalcones with H2O2 under phase transfer conditions. The reaction products had enantiomeric purities of up to 55%. It was also shown that complex 1a I− catalyzed the coupling reaction of a resulting epoxide with CO2 (conversion 72%).
在相转移条件下,Co(III)的立体化学惰性和带正电荷的手性配合物可催化查耳酮与H 2 O 2的不对称环氧化。反应产物的对映体纯度高达55%。它也表明,复杂1A我-催化的与CO所得环氧化物的偶联反应2(转化72%)。
Rigid backbone 1,8-anthracene-linked bis-oxazolines (AnBOXes): design, synthesis, application and characteristics in catalytic asymmetric aziridination
作者:Linge Ma、Peng Jiao、Qihan Zhang、Jiaxi Xu
DOI:10.1016/j.tetasy.2005.09.025
日期:2005.11
chalcones and the ether group in alkenes with the copper in the catalyst is essential for high enantioselectivity, while the π–π stacking interaction between two reactants plays an importantly additional role for high enantioselectivity in asymmetricaziridination. An excellent backbone-controlled stereoselectivity was observed for the AnBOX ligands in asymmetricaziridination, as this will provide very
Asymmetric aziridination of chalcones catalyzed by a novel backbone 1,8-bisoxazolinylanthracene (AnBOX)-copper complexElectronic supplementary information (ESI) available: characterization data, 1H NMR and 13C NMR spectra for the ligand AnBOX 1 and all unknown compounds 3, and HPLC chromatograms for the determination of the ee values of all the aziridine derivatives 3. See http://www.rsc.org/suppdata/cc/b4/b404134h/
作者:Jiaxi Xu、Linge Ma、Peng Jiao
DOI:10.1039/b404134h
日期:——
Highly enantioselective aziridination of chalcones catalyzed by a novel backbone 1,8-bisoxazolidinylanthracene (AnBOX) and CuOTf with up to >99% ee and the opposite enantioselectivity compared with the ligands of Evans are described.