Breaking Symmetry with Symmetry: Bifacial Selectivity in the Asymmetric Cycloaddition of Anthracene Derivatives
作者:Carles Rodríguez-Escrich、Rebecca L. Davis、Hao Jiang、Julian Stiller、Tore K. Johansen、Karl Anker Jørgensen
DOI:10.1002/chem.201300142
日期:2013.2.25
Push to activate: A new catalytic strategy for the activation of anthracenederivatives has been developed. From symmetrical starting materials, enantioselective cycloaddition reactions can be achieved by employing a C2‐symmetric aminocatalyst. This selectivity is due to the gain or loss of conjugation between the enamine and the anthracene in the two transition‐state structures. This methodology is demonstrated
Gaucherdisease is caused by mutations in humanacidβ‐glucosidase or glucocerebrosidase (GCase), the enzyme responsible for hydrolysis of glucosyl ceramide in the lysosomes. Imino‐ and azasugars such as 1‐deoxynojirimycin and isofagomine are strong inhibitors of the enzyme and are of interest in pharmacological chaperone therapy of the disease. Despite several crystal structures of the enzyme with
Synthesis of Isofagomine Derivatives as New Fluorescence pH Indicators/Glycosidase Inhibitors
作者:Bo Wang、Sidsel Ammitzbøll Bogh、Jens Christian Navarro Poulsen、Bo W. Laursen、Mikael Bols
DOI:10.1002/ejoc.202000522
日期:2020.7.15
To check the pH conditions in the active site of an enzyme an inhibitor with on/off fluorescence upon protonation is required. Herein, the potent glycosidaseinhibitor isofagomine is converted into “glycosidase fluorescence indicator”.