Propane-1,3-diyl Dithioacetals of Carbohydrates; Part 7: Preparation of Aminocyclitols and Iminosugars by Intramolecular Cyclizations of <scp>d</scp>-Glucosamine Propane-1,3-diyl Dithioacetal Derivatives
作者:Hartmut Redlich、Yue-Lei Chen、Robin Leguijt
DOI:10.1055/s-2006-942430
日期:2006.7
Versatile 3,4,5-tri-O-protected 2-acylamino-2-deoxy-6-O-tosyl-D-glucose propane-1,3-diyl dithioacetal intermediates were efficiently synthesized from D-glucosamine propane-1,3-diyl dithioacetal or its derivatives. Intramolecular cyclizations from these intermediates produced biologically important aminocyclitols as well as iminosugars. The 3,4-O-methylene protection on the intermediates did not hinder
由 D-氨基葡萄糖丙烷-1,3 高效合成多功能 3,4,5-三-O-保护的 2-酰基氨基-2-脱氧-6-O-甲苯磺酰基-D-葡萄糖丙烷-1,3-二基二硫缩醛中间体-二基二硫缩醛或其衍生物。这些中间体的分子内环化产生了生物学上重要的氨基环醇以及亚氨基糖。中间体上的 3,4-O-亚甲基保护不会阻碍环化。所得氨基环醇和带有正交保护基的亚氨基糖是区域选择性修饰的理想选择。因此,还讨论了去保护方法。