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The stereoselectivity of β‐mannosylation can be improved with the use of a participating moiety at C‐4 (O‐anisoyl, O‐thiocarbamoyl). This improvement was achieved in glycosidations of S‐ethyl and, especially, S‐benzoxazolyl (SBox) mannosides. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
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Meo et al. (2005) studied this question.
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