Catalytic Enantioselective 1,3-Alkyl Shift in Alkyl Aryl Ethers: Efficient Synthesis of Optically Active 3,3′-Diaryloxindoles
作者:Amol B. Gade、Pradip N. Bagle、Popat S. Shinde、Vipin Bhardwaj、Subhrashis Banerjee、Ajit Chande、Nitin T. Patil
DOI:10.1002/anie.201801650
日期:2018.5.14
Reported is the first organocatalytic asymmetric 1,3‐alkyl shift in alkyl aryl ethers for the synthesis of chiral 3,3′‐diaryloxindoles using a chiral Brønsted acid catalyst. Preliminary results showed that each enantiomer of the 3,3′‐diaryloxindole, and a racemic mixture, showed different antiproliferative activities against HeLa cell lines by using an MTT assay.
Isatin Derivatives Containing Sterically Hindered Phenolic Fragment and Water-Soluble Acyl Hydrazones on Their Basis: Synthesis and Antimicrobial Activity
作者:A. V. Bogdanov、I. F. Zaripova、A. D. Voloshina、A. S. Strobykina、N. V. Kulik、S. V. Bukharov、V. F. Mironov
DOI:10.1134/s1070363218010097
日期:2018.1
acetate and the Girard’s reagent T has afforded a series of novel water-soluble isatin-3-acyl hydrazones containing a sterically hindered phenolic fragment in position 1 of the heterocycle; antimicrobial activity of the products has been estimated. It has been shown that the isatin derivatives with bromine or methoxy substituent in the benzo fragment as well as the acyl hydrazones containing 5-methyl or
Synthesis of Isatins and Oxindoles Derivatives as SARS-CoV-2 Inhibitors Evaluated through Phenotypic Screening with Vero Cells
作者:Cintia Lima、Lúcio Freitas-Junior、Carolina Moraes、Cecília Barbosa、Till Opatz、Mauricio Victor
DOI:10.21577/0103-5053.20220138
日期:——
compounds using known protocols. The corresponding isatin derivatives were synthesized by ZrCl4/EtOH/reflux or HCl/AcOH/ reflux coupling conditions using oxindole and functionalized isatins, furnishing new 3-hydroxy bis-oxindoles, which were dehydrated into new isoindigos. A total of 27 compounds bearing halogen, nitro and/or hydroxy groups on the isatin moiety, at the 3-, 5- and 7-positions, were prepared