osmundalactone and its epimer unexpectedly undergo intramolecular conjugate addition during silica gel chromatography to produce oxazolines in excellent yields. The novel, simple synthesis of N-Bz-protected D-daunosamine and D-ristosamine from these oxazolines is described in this paper.
由桂皮内酯及其差向异构体制备的三
氯乙
酰亚胺在
硅胶色谱过程中出人意料地进行了分子内共轭加成,以优异的产率生产
恶唑啉。本文描述了从这些
恶唑啉中新颖、简单地合成 N-Bz 保护的 D-道诺胺和 D-利索胺。