thus revising the proposed structure 1 to 2. The key steps in this synthesis include an efficient construction of the THP-THF fragments 3 and 16 through a stereoselective condensation between the pyranyl aldehyde 5 and the acetylene derivative 6, and a palladium-catalyzed coupling reaction of 3 or 16 with a terminal butenolide 4.
                                    通过使用
碳水化合物作为手性结构单元,从而实现了拟议的结构1至2,实现了吉美尼嗪的首次全合成。该合成的关键步骤包括通过THP-THF片段3和16之间的立体选择性缩合来有效构建THP-THF片段3和16。
吡喃醛醛5和
乙炔衍
生物6,以及
钯或3或16与末端
丁烯内酯4的
钯催化偶联反应。