Preparation of Some 2,3-Dideoxylactones by an Unusual Catalytic Hydrogenolysis
作者:Inge Lundt、Christian Pedersen
DOI:10.1055/s-1986-31872
日期:——
Hydrogenolysis of 2-bromo-2-deoxyaldono-1,4-lactones in ethanol solution with palladium as catalyst gives good yields of the corresponding 2,3-dideoxylactones with removal of not only the bromine atom but also the C-3 hydroxy group.
Preparation of 2-, 3-, and 4-deoxy derivatives of l-rhamnose, and derivatives of 2-azido-2-deoxy-l-rhamnose and 2,6-dideoxy-2-fluoro-l-glucose, for use in glycosylation reactions
作者:Mikael Bols、Inge Lundt、Erik Rytter Ottosen
DOI:10.1016/0008-6215(91)89013-6
日期:1991.12
Abstract The following compounds have been prepared for use as glycosyl donors: 1,3,4-tri- O -acetyl-2,6-dideoxy-2-fluoro-α,β- l -glucopyranose ( 5a ), 1,3,4-tri- O -acetyl-2,6-dideoxy-α,β- l - arabino -hexopyranose ( 7a ), 1,3,4-tri- O -acetyl-2-azido-2,6-dideoxy-α,β- l -mannopyranose ( 8a ), 1,2,4-tri- O -acetyl-3,6-dideoxy-α, l - arabino - hexopyranose ( 13a ), and 1,2,3-tri- O -acetyl-4,6-dideoxy-α-
Preparation of Enantiomerically Pure Mono- and Diepoxylactones from Aldonolactones
作者:Inge Lundt、Christian Pedersen
DOI:10.1055/s-1992-26196
日期:——
Treatment of bromodeoxyaldonolactones with a nonaqueous base, such as potassium fluoride, caesium fluoride or potassium carbonate in acetone, yields 2,3-anhydro-, 5,6-anhydro-, and 2,3: 5,6-dianhydrohexonolactones, or 2,3-anhydro-and 2,3:6,7-dianhydrohepto-nolactones in good yields.