Stereochemische aspekte in zusammenhang mit der synthese von 2,6-anhydro-1-desoxy-1-nitroalditolen
作者:Armin Förtsch、Heide Kogelberg、Peter Köll
DOI:10.1016/0008-6215(87)80143-x
日期:1987.7
Abstract 2,6-Anhydro-1-deoxy-1-nitroalditols were prepared in good yields by known procedures via addition of nitromethane to d -glucose, d -mannose, d -galactose, d -xylose, d -lyxose and l -arabinose, followed by a cyclization step in boiling water. In the case of d -ribose, a mixture of pyranoid and furanoid anhydroalditols was isolated by different methods in relatively poor yields, at variance
摘要通过将硝基甲烷添加到d-葡萄糖,d-甘露糖,d-半乳糖,d-木糖,d-lyxose和l-阿拉伯糖中的已知方法,以高收率制备了2,6-脱水-1-脱氧-1-硝基醛糖醇,然后在沸水中进行环化步骤。就d-核糖而言,通过其他方法以相对较差的收率分离出吡喃类化合物和呋喃类脱水醛糖醇的混合物,这与其他作者最近的报道有所不同。从其乙酸盐的1 Hn.mr光谱建立产物的立体化学关系,可以进一步了解环化步骤的非对映选择性。