117757-06-9Relevant articles and documents
Preparative route to glucuronyl donors bearing temporary protecting group at O-3 via 6,3-lactonisation by Bz2O or Piv2O
Kornilov, Andrei V,Sukhova, Elena V,Nifantiev, Nikolay E
, p. 309 - 313 (2007/10/03)
Heating of non-substituted β-D-glucopyranuronic acids in the presence of pivalic or benzoic anhydride in DMF gives 4-O-monoacylated or 2,4-di-O-acylated 6,3-lactones that can be easily transformed into corresponding methyl uronates bearing free OH-groups at C-2 and C-3 or C-3 only, respectively. This method was used for preparation of selectively 3-O-protected glucuronyl donors of thioglycoside and trichloracetimidate types.