The first example of a one-step synthesis of 2′-O-acetyl aryl-d-glucopyranosides
作者:Elena V. Stepanova、Maxim L. Belyanin、Victor D. Filimonov、Rashid R. Valiev、Margit Gruner、Victor Rogachev
DOI:10.1016/j.carres.2015.03.017
日期:2015.5
A selective acidic system for partial deacetylation of phenolic D-glucopyranosides per-acetates has been developed that allows synthesis of the corresponding 2'-O-acetyl-D-glucosides. Many disadvantages of generally used methods for preparing such mono-acyl derivatives involving multistep procedures or the use of enzymes are avoided. The ion at m/z 289 in mass spectra of their TMS derivatives indicates a particular and characteristic fragmentation pattern of these 2'-O-acetyl derivatives of D-glucopyranosides. Quantum-chemical calculations applying B3LYP/TZVP level of theory revealed the stability of 2'-O-acetyl glucopyranoside if compare with 3'-, 4'- and 6'- O-acetyl glucopyanosides. (C) 2015 Elsevier Ltd. All rights reserved.