Harnessing Multistep Chalcogen Bonding Activation in the α-Stereoselective Synthesis of Iminoglycosides
作者:Caiming Wang、Anna Krupp、Carsten Strohmann、Bastian Grabe、Charles C. J. Loh
DOI:10.1021/jacs.4c00262
日期:2024.4.17
scaffolds are relatively common, methods that allow the selective synthesis of biologically important iminosugars are comparatively rare. Here, we report the capacity of a phosphonochalcogenide (PCH) to catalyze the stereoselective α-iminoglycosylation of iminoglycals with a wide array of glycosyl acceptors with remarkable protecting group tolerance. Mechanistic studies have illuminated the counterintuitive
Generalized Anomeric Effect in Action: Synthesis and Evaluation of Stable Reducing Indolizidine Glycomimetics as Glycosidase Inhibitors
作者:Víctor M. Díaz Pérez、M. Isabel García Moreno、Carmen Ortiz Mellet、José Fuentes、Juan C. Díaz Arribas、F. Javier Cañada、José M. García Fernández
DOI:10.1021/jo991242o
日期:2000.1.1
castanospermine analogues incorporating a stereoelectronically anchored axial hydroxy group at the pseudoanomeric stereocenter (C-5) have been synthesized to satisfy the need for glucosidase inhibitors that are highly selective for alpha-glucosidases. The polyhydroxylated bicyclic system was built from readily available hexofuranose derivatives through a synthetic scheme that involved (i) the construction