A highly stereoselective synthesis of 1-amino-2,5-anhydro-1-deoxyhexitols via 2-trifluoromethyl-oxazolinium intermediates11Dedicated to Professor Hans Paulsen on the occasion of his 75th birthday.22Part of J.C. Norrild, “Reactivity of aminodeoxyalditols and derivaties in hydrogen fluoride”, Ph.D. Thesis, The Technical University of Denmark, 1996.
作者:Jens Chr. Norrild、Christian Pedersen、Inger Søtofte
DOI:10.1016/s0008-6215(96)00278-9
日期:1997.1
Abstract A series of 1-amino-2,5-anhydro-1-deoxyalditols, namely derivatives of 1-amino-2,5-anhydro-1-deoxy- d -glucitol, - d -mannitol and - d -talitol was prepared from the corresponding 1-deoxy-1-trifluoroacetamidohexitols by treatment with anhydrous hydrogen fluoride. The reaction was also performed on 1,3-dideoxy-1-trifluoroacetamido- d -ribo-hexitol and 1-deoxy- 1-trifluoroacetamido- l -rhamnitol
摘要制备了一系列1-氨基-2,5-脱水-1-脱氧醛醇,即1-氨基-2,5-脱水-1-脱氧-d-葡萄糖醇,-d-甘露糖醇和-d-taltalitol的衍生物。通过用无水氟化氢处理得到相应的1-脱氧-1-三氟乙酰氨基己糖醇。该反应还在1,3-二脱氧-1-三氟乙酰胺基-d-核糖醇和1-脱氧-1-三氟乙酰胺基-1-鼠李糖醇上进行,这两种反应均得到了预期的C-2倒置酸酐。该反应机理涉及2-三氟甲基-恶唑啉鎓中间体,其在构型反转的情况下进一步经历HO-5在C-2的分子内攻击。该反应是立体定向的和高度区域选择性的。介绍了1-氨基-2,5-脱水-1-脱氧-d-葡萄糖醇盐酸盐的晶体结构。©1997爱思唯尔科学有限公司。