Abstract
| - The tandem isomerization−aldolization reaction of (2R)-1,2-O-isopropylidene-4-penten-1,2,3-triol3 and formaldehyde gives a mixture of two aldol products 2a and 2b. The stereoselective reductionof each compound by l-Selectride affords two diastereoisomers of (2R)-1,2-O-Isopropylidene-4-methylpentane-1,2,3,5-tetraol while a third diastereoisomer is obtained by stereoselective reductionwith Me4NHB(OAc)3.
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