Efficient route to highly functionalized
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F. L. van Delft; G. A. van der Marel; J. H. van Boom
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Article
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2010
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Elsevier Science
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English
⚖ 179 KB
## Abstract Cyclization of 3,4,6‐tri‐__O__‐benzyl‐2,5‐di‐__O__‐trimethylsilyl‐1‐deoxy‐1‐phenyldiisopropylsilyl‐L‐glucitol in the presence of BF~3~·Et~2~O or catalytic H~2~SO~4~ proceeds stereoselectively to give predominantly the fully benzylated 2,5‐anhydro‐L‐glucitol derivative without occurrence