Abstract

Two diastereoisomeric keto-octoses, obtained in the reaction of 2,3:4,5-diacetone-d-arabinose with protected dihydroxyacetone catalyzed with l- or d-proline, were converted into octitols by stereoselective reduction of the carbonyl group with zinc borohydride and final deprotection. The study on the preparation of the respective amino-derivatives by reductive amination of these organo-adducts is presented; stereochemical aspects of these processes are discussed.

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