Synthesis of 4-C-(1-hydroxyethyl) derivatives from benzyl 2,3-di-O-benzyl- and -2,3-O-methylene-β-l-threo-pentopyranosid-4-ulose, and the corresponding α-d-xylo-hexopyranosid-4-uloses
Synthesis of 4-C-(1-hydroxyethyl) derivatives from benzyl 2,3-di-O-benzyl- and -2,3-O-methylene-β-l-threo-pentopyranosid-4-ulose, and the corresponding α-d-xylo-hexopyranosid-4-uloses