Studies in macrolide synthesis: A concise asymmetric synthesis of a macrolide intermediate for the erythronolides.
作者:Ian Paterson、David D.P. Laffan、David J. Rawson
DOI:10.1016/s0040-4039(00)80325-1
日期:1988.1
The enantiomerically-pure 14-membered ring macrolide 1 is prepared in 14 steps from the racemic aldehyde 4, Z=SPh. The C2-C4 and C8-C10 stereorelationships in 1 are controlled in a single step by an Evans aldol condensation with (±)-4. Macrolactonisation, 23 → 1, takes place in high yield (91%).
从外消旋醛4(Z = SPh)以14步制备对映体纯的14元环大环内酯1。的C 2 -C 4和C 8个-C 10 stereorelationships在1被控制在单个步骤中通过埃文斯醛醇缩合与(±) - 4。宏观内酯化23 → 1,产率高(91%)。