Direct and stereoselective synthesis of β-D-mannosides using 4,6-O-benzylidene-protected mannosyl diethyl phosphite as a donor
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概要
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A direct and practical method for the construction of β-mannosidic linkages is described. While β-selectivities in the TMSOTf-promoted glycosidation of 2,3,4,6-tetra-O-benzyl-D-mannosyl diethyl phosphite are found to be highly dependent on the reactivity of acceptor alcohols, 2,3-di-O-benzyl-4,6-O-benzylidene-D-mannosyl diethyl phosphite reacts with a wide range of acceptor alcohols in the presence of TMSOTf in CH2Cl2 at –45 °C to give β-mannosides in high yields with good to high β-selectivities.
- Elsevierの論文
- 2005-09-19
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