primary allylicamines was substituted directly by sulfinate salts with excellent regio- and stereoselectivities. In the presence of 0.1 mol % [Pd(allyl)Cl](2), 0.4 mol % 1,4-bis(diphenylphosphino)butane (dppb), and excess boric acid, a range of α-unbranched primary allylicamines were smoothly substituted with sodium sulfinates in an α-selective fashion to give structurally diverse allylic sulfones
[2+2] Photocycloaddition mediated by 1-butyl-3-methyl-7,8-dimethoxyalloxazine (1) is shown as an effective tool to cyclise ω-phenyl and ω,ω'-diphenyl-4-aza-1,6-heptadienes, with the nitrogen atom protected by acylation or quaternisation, used towards the synthesis of variety of phenyl- and diphenyl-3-azabicyclo[3.2.0]heptanes and their corresponding quaternary salts. Thia-derivatives with the sulfur
Structural Basis for Achieving GSK-3β Inhibition with High Potency, Selectivity, and Brain Exposure for Positron Emission Tomography Imaging and Drug Discovery
作者:Vadim Bernard-Gauthier、Andrew V. Mossine、Ashley Knight、Debasis Patnaik、Wen-Ning Zhao、Chialin Cheng、Hema S. Krishnan、Lucius L. Xuan、Peter S. Chindavong、Surya A. Reis、Jinshan Michael Chen、Xia Shao、Jenelle Stauff、Janna Arteaga、Phillip Sherman、Nicolas Salem、David Bonsall、Brenda Amaral、Cassis Varlow、Lisa Wells、Laurent Martarello、Shil Patel、Steven H. Liang、Ravi G. Kurumbail、Stephen J. Haggarty、Peter J. H. Scott、Neil Vasdev
DOI:10.1021/acs.jmedchem.9b01030
日期:2019.11.14
Using structure-guided design, several cell based assays, and microdosed positron emission tomography (PET) imaging, we identified a series of highly potent, selective, and brain-penetrant oxazole-4-carboxamide-based inhibitors of glycogen synthase kinase-3 (GSK-3). An isotopologue of our first-generation lead, [3H]PF-367, demonstrates selective and specific target engagement in vitro, irrespective
synthesis of 3-azabicyclo[3.1.0]hex-2-enes has been developed by intramolecular cyclopropanation of readily available N-allyl enamine carboxylates. Two complementary reaction conditions, CuBr-mediated aerobic and CuBr2-catalyzed-PhIO2-mediated systems effectively induced stepwise cyclopropanation via carbocupration of alkenes. Oxidative cyclopropane ring-opening of 5-substituted 3-azabicyclo[3.1.0]hex-2-enes