Design and synthesis of novel diphenacoum-derived, conformation-restricted vitamin K 2,3-epoxide reductase inhibitors
摘要:
Two novel diphenacoum-derived analogues 5 and 6 are designed, synthesized and tested as potential vitamin K 2,3-epoxide reductase (VKOR) inhibitors. The inhibition studies indicated that 5 is a potent VKOR inhibitor, which confirmed that the replacement of the tetrahydronaphthalene on diphenacoum to a chroman functionality does not have a major impact on inhibition potency. The conformation-restricted compound 6 is a moderate inhibitor which may serve as a lead compound for further study of the mode of action of coumarin-type anticoagulants at the molecular level. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis of Flavanones via Palladium(II)-Catalyzed One-Pot β-Arylation of Chromanones with Arylboronic Acids
作者:Hyung-Seok Yoo、Seung Hwan Son、Yang Yil Cho、Soo Jin Lee、Hyu Jeong Jang、Young Min Kim、Dong Hwan Kim、Nam Yong Kim、Boyoung Y. Park、Yong Sup Lee、Nam-Jung Kim
DOI:10.1021/acs.joc.9b01162
日期:2019.8.16
total of 47 flavanones were expediently synthesized via one-pot β-arylation of chromanones, a class of simple ketones possessing chemically unactivated β sites, with arylboronic acids via tandem palladium(II) catalysis. This reaction provides a novel route to various flavanones, including natural products such as naringenin trimethyl ether, in yields up to 92%.
flavanones, which included polycyclic aromatic and heterocyclic rings, were readily synthesized via oxa-Michael addition from the corresponding hydroxychalcones with a catalytic amount of aqueous cesium fluoride solution under mild conditions. This method could be applied to the scalable synthesis of eriodictyol as a known potent inhibitor of the SARS-CoV-2 spike protein.
Synthesis of Flavanone and Quinazolinone Derivatives from the Ruthenium-Catalyzed Deaminative Coupling Reaction of 2′-Hydroxyaryl Ketones and 2-Aminobenzamides with Simple Amines
作者:Krishna Gnyawali、Pandula T. Kirinde Arachchige、Chae S. Yi
DOI:10.1021/acs.orglett.1c03870
日期:2022.1.14
deaminative coupling reaction of 2′-hydroxyaryl ketones with simple amines to form 3-substituted flavanone products. The analogous deaminative coupling reaction of 2-aminobenzamides with branched amines directly formed 3,3-disubstituted quinazolinone products. The catalytic method efficiently installs synthetically useful flavanone and quinazolinone core structures without employing any reactive reagents.
Asymmetric Intramolecular Oxa-Michael Addition of Activated α,β-Unsaturated Ketones Catalyzed by a Chiral<i>N</i>,<i>N</i>′-Dioxide Nickel(II) Complex: Highly Enantioselective Synthesis of Flavanones