Abstract
As a simple substitute of the fucofuranoside method, a recently devised technique for determining the absolute configuration of secondary alcohols by 13C NMR, the arabinofuranoside method is proposed. Unlike fucose, the derivatizing agent arabinofuranose tetraacetate is available quantitatively by acid treatment of arabinose followed by acetylation. Application to the ten alcohols, previously tested for fucofuranoside method, showed essentially the identical Δ δ C and Δ δ H values, indicating that the arabinofuranoside method is equally useful for determining the absolute configuration of the secondary alcohols.
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