A simple and efficient one-step, regioselective, enzymatic glucosylation of arbutin by alpha-glucosidase
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4-Hydroxyphenyl-beta-isomaltoside has been synthesized by alpha-glucosidase assisted transglycosylation between arbutin as acceptor and sucrose as donor molecules, respectively. Optimum conditions for the transglucosylation reaction were 40 degrees C for 20 h with 10 mM arbutin and 1.5 M sucrose in a 100 mM sodium citrate/phosphate buffer at pH 5.0. The new glucoside was obtained in a 50% molar yield with respect to arbutin. (C) 2007 Elsevier Ltd. All rights reserved.
Keywords:alpha-anomer-selective glucosylation / transglucosylation / 4-hydroxyphenyl-beta-isomaltoside / maltase / enzyme reactions
Source:Tetrahedron Letters, 2007, 48, 40, 7222-7224
- Pergamon-Elsevier Science Ltd, Oxford