Synthesis of a constrained polyfunctional bicyclic iminocyclitol scaffold from l-sorbose via a tandem sequence including stereoselective intramolecular Huisgen cycloaddition
作者:Ciaran O’Reilly、Colin O’Brien、Paul V. Murphy
DOI:10.1016/j.tetlet.2009.05.060
日期:2009.8
The synthesis of a functionalized (azido, amino, and hydroxy) 8-oxa-3-azabicyclo[3.2.1]octane framework and its conversion into a protected sugar amino acid and a tricyclic framework is described. The sequence includes a one-pot Huisgen 1,3-dipolar cycloaddition, with decomposition to an aziridine and subsequent ring opening by azide. The stereoselectivity observed in the Huisgen cycloaddition reaction
描述了功能化的(叠氮基,氨基和羟基)8-氧杂-3-氮杂双环[3.2.1]辛烷骨架的合成及其向受保护的糖氨基酸和三环骨架的转化。该序列包括一锅的Huisgen 1,3-偶极环加成,其分解成氮丙啶,随后被叠氮化物开环。在Huisgen环加成反应中观察到的立体选择性归因于烯丙基菌株的最小化。