58394-31-3Relevant articles and documents
Diastereoselective Weitz-Scheffer epoxidation of levoglucosenone for the synthesis of isolevoglucosenone and derivatives
Ledingham, Edward T.,Greatrex, Ben W.
, p. 6107 - 6115 (2018/09/14)
High-yielding epoxidation conditions for the cellulose pyrolysis product (?)-levoglucosenone (LGO) and 3-aryl derivatives of LGO have been developed. The reaction of LGO with hydrogen peroxide/base is known to give a Baeyer-Villiger reaction, however, it was found that the reactions of LGO or derivatives with tert-butylhydroperoxide/base affords solely epoxides through the Weitz-Scheffer reaction. A critical parameter in the successful isolation of the epoxide from LGO was to avoid all contact with water or alcohols during the reaction and workup. The epoxide products were reacted under Wharton conditions affording allylic alcohols and subsequent oxidation led to isolevoglucosenone or 3-arylisolevoglucosenone derivatives. Previously unreported reactions on isolevoglucosenone were then investigated.
New chiral building blocks and branched 1,6-anhydro sugars from regio- and stereoisomeric Cerny epoxides
Krohn, Karsten,Gehle, Dietmar,Floerke, Ulrich
, p. 4557 - 4562 (2007/10/03)
The tandem epoxide→allyl alcohol rearrangement-cuprate cross-coupling previously described for the Cerny epoxide 1, to yield the allyl alcohol 2, was extended to the regioisomeric epoxy-tosylate 3, to yield allyl alcohol 4, and to the stereoisomeric epoxi
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