58394-32-4Relevant academic research and scientific papers
Manipulating the enone moiety of levoglucosenone: 1,3-Transposition reactions including ones leading to isolevoglucosenone
Ma, Xinghua,Liu, Xin,Yates, Patrick,Raverty, Warwick,Banwell, Martin G.,Ma, Chenxi,Willis, Anthony C.,Carr, Paul D.
, p. 5000 - 5011 (2018/06/20)
The manipulation of the enone moiety associated with the biomass-derived, homochiral and now abundant compound levoglucosenone (1) is described. While the trichloroacetimidates derived from the allylic alcohols 3 and 4 failed to engage in Overman-type rea
The conversion of levoglucosenone into isolevoglucosenone
Ma, Xinghua,Anderson, Natasha,White, Lorenzo V.,Bae, Song,Raverty, Warwick,Willis, Anthony C.,Banwell, Martin G.
, p. 593 - 599 (2015/04/27)
Levoglucosenone (1), a compound that will soon be available in tonne quantities through the pyrolysis of acid-treated lignocellulosic biomass, has been converted into isolevoglucosenone (2) using Wharton rearrangement chemistry. Treatment of compound 1 with alkaline hydrogen peroxide gave the γ-lactones 5 and 6 rather than the required epoxy-ketones 3 and/or 4. However, the latter pair of compounds could be obtained by an initial Luche reduction of compound 1, electrophilic epoxidation of the resulting allylic alcohol 8 and oxidation of the product oxiranes 9 and 10. Independent treatment of compounds 3 and 4 with hydrazine then acetic acid followed by oxidation of the ensuing allylic alcohols finally afforded isolevoglucosenone (2). Details of the single-crystal X-ray analyses of epoxy-alcohols 9 and 10 are reported.
Chemoselective elaboration of O-linked glycopeptide mimetics by alkylation of 3-thioGalNAc
Marcaurelle,Bertozzi
, p. 1587 - 1595 (2007/10/03)
A critical branch point in mucin-type oligosaccharides is the β1 → 3 glycosidic linkage to the core α-N-acetylgalactosamine (GalNAc) residue. We report here a strategy for the synthesis of O-linked glycopeptide analogues that replaces this linkage with a
Lipase-mediated preparation of enantiopure isolevoglucosenone
Kadota,ElAzab,Taniguchi,Ogasawara
, p. 1372 - 1374 (2007/10/03)
A route to enantiopure isolevoglucosenone, a regioisomer of levoglucosenone and a potential chiral building block, has been developed by employing lipase-mediated kinetic resolution as the key step.
Reactions of 2-hydroxy-6,8-dioxabicyclo[3.2.1]oct-3-ene with diethylaminosulfur trifluoride and with halogens. Facile synthesis of 1,6- anhydrohalohexopyranoses
Oberdorfer, Franz,Haeckel, Roland,Lauer, Gilbert
, p. 201 - 206 (2007/10/03)
D-Galactal 1 reacts in THF in the presence of catalytic amounts of concentrated sulfuric acid to give (2R)-2-hydroxy-6,8-dioxabicyclo[3.2.1]oct- 3-ene (4) in a Ferrier-type rearrangement in 40% yield. When 4 is treated with diethylaminosulfur trifluoride
