Claisen Rearrangement of Carbohydrate-Derived Precursors Towards Highly Functionalized Cyclooctenones withL-xylo,D-arabino andL-lyxo Configuration and Their Diastereoselective Transformations
作者:Stefan Jürs、Barbara Werschkun、Joachim Thiem
DOI:10.1002/ejoc.200600455
日期:2006.10
thermally and catalytically, these cyclic allyl vinyl ethers could be converted into the corresponding Claisen rearrangement products. The conformations of these enantiopure 5-cyclooctenones were studied by NMR spectroscopy and X-ray crystallography. They proved to be versatile substrates for highly stereo- and regioselective modifications. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany
D-葡萄糖和 D-甘露糖已转化为包含烯丙基乙烯基醚亚结构的前体。通过热和催化,这些环状烯丙基乙烯基醚可以转化为相应的克莱森重排产物。这些对映体纯 5-环辛烯酮的构象通过核磁共振光谱和 X 射线晶体学进行了研究。它们被证明是高度立体和区域选择性修饰的通用底物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)