作者:Izuru Nagashima、Hiroki Shimizu
DOI:10.1016/j.tet.2014.03.058
日期:2014.5
Cyclodextrins (CDs) do not disturb HPLC purification and do not form lather, which makes them superior to commonly used surfactants. In this paper, the authors describe the utility of CDs, specifically alpha-CD, beta-CD, and gamma-CD, for the synthesis of neoglycolipids from insoluble peptide-linked substrates. gamma-CD was found to be well matched to the bulky benzyl group and accelerated the reaction for the substrate having Phe (F), while beta-CD was well matched to the methyl group and accelerated the reaction for the substrate having Ala (A). Galactosylation to water-insoluble peptide-linked glucosaminide substrate by galactosyltransferase proceeded 63% at the most, but using either beta-CD or gamma-CD gave quantitative yield within 10 h. (c) 2014 Elsevier Ltd. All rights reserved.