Enzymatic synthesis of alkyl α-2-deoxyglucosides by alkyl alcohol resistant α-glucosidase from Aspergillus niger
作者:Young-Min Kim、Masayuki Okuyama、Haruhide Mori、Hiroyuki Nakai、Wataru Saburi、Seiya Chiba、Atsuo Kimura
DOI:10.1016/j.tetasy.2004.11.046
日期:2005.1
Aspergillus niger alpha-glucosidase (ANGase) was used for an efficient syntheses of alkyl alpha-D-2-deoxyglucosides (A2DGs) and for regioselectivity studies of alkoxy-hydro additions Of D-glucal in the presence of alkyl alcohols. ANGase showed a high stability with respect to the high concentration of alkyl alcohols. The reaction conditions were optimized for pH, temperature, alkyl alcohol concentration, and D-glucal concentration. On the basis of MS and NMR analyses, A2DGs were confirmed to have only an alpha-2deoxyglucosidic bond and the two-dimensional NMR (HMBC) spectra showed to be made up of 2-deoxyglucosyl and alkyl moieties. (C) 2004 Elsevier Ltd. All rights reserved.