Easy access to C-glycosides from aldonolactones by a Claisen-type chain-extension reaction
作者:René Csuk、Martin Kühn、Dieter Ströhl
DOI:10.1016/s0040-4020(96)01079-4
日期:1997.1
Chain elongated 2,4-diuloses 2, 4, 6, 9–11, 24, 25 were conveniently obtained from the corresponding aldonolactones 1, 3, 5 by their reaction with carbonyl compounds in the presence of sodium hydride. These hemiacetalic products can be transformed into C-glycosides by deoxygenation with Et3SiH/BF3·Et2O.