Highly Functionalized and Potent Antiviral Cyclopentane Derivatives Formed by a Tandem Process Consisting of Organometallic, Transition-Metal-Catalyzed, and Radical Reaction Steps
A simple modular tandem approach to multiply substituted cyclopentanederivatives is reported, which succeeds by joining organometallic addition, conjugateaddition, radical cyclization, and oxygenation steps. The key steps enabling this tandem process are the thus far rarely used isomerization of allylic alkoxides to enolates and single‐electron transfer to merge the organometallic step with the radical
Carbocycles are essential building blocks for the synthesis of natural and synthetic bioactive compounds. Herein, we report the first example of palladium-catalyzed intramolecular carboalkynylation of non-activated olefins. Using activated carbonyl compounds as nucleophiles and an alkynyl bromide as an electrophile, the reaction gives access to cyclopentanes in 44-93% yield and one example of cyclohexane in 31% yield with simultaneous formation of a SP3-SP C-C bond. The reaction therefore combines ring formation with the introduction of a versatile triple bond for further functionalization. (C) 2015 Elsevier Ltd. All rights reserved.
Julia,M.; Maumy,M., Bulletin de la Societe Chimique de France, 1969, p. 2415 - 2427
作者:Julia,M.、Maumy,M.
DOI:——
日期:——
Julia,M.; Maumy,M., Bulletin de la Societe Chimique de France, 1969, p. 2427 - 2434
作者:Julia,M.、Maumy,M.
DOI:——
日期:——
Design, synthesis, and biological evaluation of simplified α-Keto heterocycle, trifluoromethyl ketone, and formyl substituted folate analogues as potential inhibitors of GAR transformylase and AICAR transformylase
作者:Thomas H Marsilje、Michael P Hedrick、Joel Desharnais、Ali Tavassoli、Yan Zhang、Ian A Wilson、Stephen J Benkovic、Dale L Boger
DOI:10.1016/s0968-0896(03)00456-5
日期:2003.10
A series of simplified alpha-keto heterocycle, trifluoromethyl ketone, and formyl substituted folate analogues lacking the benzoylglutamate subunit were prepared and examined as potential inhibitors of glycinamide ribonucleotide transformylase (GAR Tfase) and aminoimidazole carboxamide transformylase (AICAR Tfase). (C) 2003 Elsevier Ltd. All rights reserved.