Abstract Two rare amino sugars, 3-acetamido-3-deoxy- and 4-acetamido-4-deoxy- d -altrose, were prepared from levoglucosenone (1,6-anhydro-3,4-dideoxy-β- d - glycero -hex-3-enopyranos-2-ulose) respectively by reduction of the carbonyl group, selective cis -oxyamination of the carbon-carbon double bond, detosylation of the p -toluenesulfonamido group, acetylation, acetolysis of the 1,6-anhydro bond,
摘要以左旋
葡糖酮(1,6-脱
水-3,4-二脱氧-β-d-
甘油- hex-3-enopyranos-2-ulose)分别通过还原羰基,碳-碳双键的选择性顺式氧化,对
甲苯磺酰胺基的去
甲苯基化,乙酰化,1,6-脱
水键的乙酰化,最终使O-乙酰基脱乙酰化。可以通过选择烯丙基羟基的保护基来控制通过还原左
葡糖醛酮而获得的烯丙基醇的碳-碳双键的顺式氧化胺的区域选择性。