Straightforward Enantioselective Synthesis of Both Enantiomers of Karahana Lactone Using a Domino Ring-Closure Sequence
作者:Jean-Marie Galano、Gérard Audran、Honoré Monti
DOI:10.1016/s0040-4020(00)00645-1
日期:2000.9
straightforward enantioselective synthesis of both enantiomers of karahana lactone is described starting from enantiopure (R) or (S)-4-hydroxy-3-methyl-cyclohex-2-en-1-one. The key step of the sequence is an acid-induced domino reaction with three pathways running. Because of the first description of karahana lactone as a solid, the structure was secured by X-ray structural analysis.
从对映纯(R)或(S)-4-羟基-3-甲基-环己基-2-en-1-one开始描述卡拉汉纳内酯的两种对映体的直接对映选择性合成。序列的关键步骤是酸诱导的多米诺骨牌反应,具有三个运行路径。由于卡拉汉纳内酯为固体的首次描述,因此通过X射线结构分析确定了结构。