Oligosaccharide Analogues of Polysaccharides. Part 12. Synthesis of ‘acetyleno-saccharide’-derived cyclodextrin analogues
作者:Roland Bürli、Andrea Vasella
DOI:10.1002/hlca.19970800403
日期:1997.6.30
‘Acetyleno-oligosaccharides’ in which two terminal ethynyl substituents enclose an angle (significantly) below 180° are building blocks for the preparation of cyclodextrin analogues. This is illustrated by the preparation of a cyclotrimer and a cyclotetramer; the C3-symmetrical cyclotrimer 18 (Scheme 1) was synthesized in 13 steps (7.7%) and the C4-symmetrical cyclotetramer 51 (Scheme 3) in 14 steps