Sequential One-Pot Synthesis of Tri- and Tetrasubstituted Thiophenes and Fluorescent Push–Pull Thiophene Acrylates Involving (Het)aryl Dithioesters as Thiocarbonyl Precursors
作者:Anand Acharya、G. Parameshwarappa、B. Saraiah、H. Ila
DOI:10.1021/jo502429c
日期:2015.1.2
An efficient, one-pot three component synthesis of highly functionalized tri- and tetrasubstituted thiophenes has been reported involving (het)aryl dithioesters as thiocarbonyl precursors. Thus, sequential base mediated condensation of readily available (het)aryl active methylene ketones with (het)aryl dithioesters followed by S-alkylation of the resulting enethiolate salts with activated halomethylene
Diversity-Oriented Synthesis of Substituted Benzo[<i>b</i>]thiophenes and Their Hetero-Fused Analogues through Palladium-Catalyzed Oxidative CH Functionalization/Intramolecular Arylthiolation
作者:Anand Acharya、S. Vijay Kumar、Hiriyakkanavar Ila
DOI:10.1002/chem.201501828
日期:2015.11.16
benzo[b]thiophenes has been developed throughpalladium‐catalyzed intramolecular oxidative CH functionalization–arylthiolation of enethiolate salts of α‐aryl‐β‐(het)aryl/alkyl‐β‐mercaptoacrylonitriles/acrylates or acrylophenones. The overall strategy involves a one‐pot, two‐step process in which enethiolate salts [generated in situ through base‐mediated condensation of substituted arylacetonitriles, deoxybenzoins
Design, Synthesis, and Evaluation of Inhibitors for Severe Acute Respiratory Syndrome 3C-Like Protease Based on Phthalhydrazide Ketones or Heteroaromatic Esters
作者:Jianmin Zhang、Hanna I. Pettersson、Carly Huitema、Chunying Niu、Jiang Yin、Michael N. G. James、Lindsay D. Eltis、John C. Vederas
DOI:10.1021/jm061425k
日期:2007.4.1
The 3C-like protease (3CL(pro)), which controls the severe acute respiratory syndrome (SARS) coronavirus replication, has been identified as a potential target for drug design in the treatment of SARS. A series of tetrapeptide phthalhydrazide ketones, pyridinyl esters, and their analogs have been designed, synthesized, and evaluated as potential SARS 3CL(pro) inhibitors. Some pyridinyl esters are identified as very potent inhibitors, with IC50 values in the nanomolar range (50-65 nM). Electrospray mass spectrometry indicates a mechanism involving acylation of the active site cysteine thiol for this class of inhibitors.
The Synthesis of Nitrogen-containing Ketones. V. The Direct Acylation of 3-Picoline<sup>1,2,3</sup>
作者:Alfred D. Miller、Carl Osuch、Newton N. Goldberg、Robert Levine