2′-fluoromaltose: Synthesis and properties of 4-O-(2-deoxy-2-fluoro-α-d-glucopyranosyl)-d-glucopyranose, and the crystal structure of 2,3-di-O-acetyl-1,6-anhydro-4-O-(3,4-tri-O-acetyl-2-deoxy-2-fluoro-α-d-glucopyranosyl)-β-d- glucopyranose
作者:Judith G. Shelling、David Dolphin、Peter Wirz、Roger E. Cobbledick、Frederick W.B. Einstein
DOI:10.1016/0008-6215(84)85222-2
日期:1984.9
d -glucopyranosyl)-β- d -glucopyranose. Deprotection of this disaccharide gave 2′-deoxy-2′-fluoromaltose. Maltose and its fluorinated analogue displayed similar 1 H- and 13 C-n.m.r. spectra and optical rotations, indicating that these two sugars are isomorphous in solution and suggesting that 2′-deoxy-2′-fluoromaltose might be a suitable substrate for studies of α-glycosidases.
3,4,6-三-O-乙酰-2-脱氧-2-氟-α-d-吡喃葡萄糖基溴化物与3,4,6-三-O-乙酰-2-脱氧-2-氟-溴的偶联在两种情况下,在Koenigs-Knorr反应条件下,α-d-吡喃半乳糖基溴化物与2,3-二-O-乙酰基-1,6-脱水-β-d-葡萄糖一起生成仅相应的α-(1→4 )-连接的二糖。在第一种情况下,通过1 H-和19 Fn.mr以及X-射线晶体学分析2,3-二-O-乙酰基-1,6-脱水4-O-(3, 4,6-三-O-乙酰基-2-脱氧-2-氟-α-d-吡喃葡萄糖基)-β-d-吡喃葡萄糖。该二糖的脱保护得到2'-脱氧-2'-氟麦芽糖。麦芽糖及其氟化类似物显示出相似的1 H和13 Cn.mr光谱和旋光度,