Syntheses and Doxorubicin-Inclusion Abilities of .BETA.-Cyclodextrin Derivatives with a Hydroquinone .ALPHA.-Glycoside Residue Attached at the Primary Side
This paper describes syntheses and doxorubicin-inclusion abilities of β-cyclodextrin (CyD) derivatives with a hydroquinone α-glycoside residue attached at the primary side. The hydroquinone glycoside having an α-D-glucosidic or 2-acetamido-2-deoxy-α-D-glucosidic linkage became a useful component for providing an α-D-glucose- or 2-acetamido-2-deoxy-α-D-glucose–β-CyD conjugate. The surface plasmon resonance analyses of these β-CyD derivatives for the anticancer agent, doxorubicin, indicated that they had excellent inclusion associations on the order of 105 m−1 for the immobilized doxorubicin.
Formal Glycosylation of Quinones with <i>exo</i>-Glycals Enabled by Iron-Mediated Oxidative Radical–Polar Crossover
作者:Haijuan Liu、Adrien G. Laporte、Damien Tardieu、Damien Hazelard、Philippe Compain
DOI:10.1021/acs.joc.2c01635
日期:2022.10.7
exo-glycals under iron hydride hydrogen atom transfer (HAT) conditions is described. This method provides a direct and regioselective access to a wide range of phenolic O-ketosides related to biologically relevant natural products in diastereomeric ratios up to >98:2 in the furanose and pyranose series. No trace of the corresponding C-glycosylated products that might have resulted from the radical alkylation