<i>O</i>-Glycosidation of Telluroglycoside by Electrochemical Oxidation
作者:Shigeru Yamago、Koji Kokubo、Jun-ichi Yoshida
DOI:10.1246/cl.1997.111
日期:1997.2
The electrochemical oxidation of telluroglycosides in the presence of primary or secondary alcohols results the O-glycosidation with high efficiency. Difference of the oxidation potential is nicely accounted for that of the reactivity of armed- and disarmed-telluroglycosides.
Electrochemistry of Chalcogenoglycosides. Rational Design of Iterative Glycosylation Based on Reactivity Control of Glycosyl Donors and Acceptors by Oxidation Potentials
作者:Shigeru Yamago、Koji Kokubo、Osamu Hara、Sadayoshi Masuda、Jun-ichi Yoshida
DOI:10.1021/jo0261350
日期:2002.11.1
also affected by the para-substituents, and the substitution effect correlates very well with the HOMO energy of para-substituted benzenechalcogenol and with the Hammett sigma p + value. Electrochemical glycosylation of telluroglycosides has been examined, and it was found that the use of an undivided cell is more effective than the use of a divided cell. Selective activation of the chalcogenoglycosides