作者:Andrew S. Kende、José S. Mendoza、Yasuhiro Fujii
DOI:10.1016/s0040-4020(01)88025-x
日期:1993.9
The structurally unique antifungal antibiotic ambruticin (1) has been prepared for the first time in a convergent synthesis. The strategy for its synthesis involved the independent preparation of the enantiomerically pure fragments 19, 31 and 49. The required C(7)C(8) β-C-glycoside bond was formed by coupling the glycosyl fluoride 19 with the in situ formed vinyl alane derivative 32. Formation of
结构独特的抗真菌抗生素ambrutticin(1)首次在聚合合成中制备。其合成的策略涉及到的对映体纯片段的独立制备19,31和49。通过将糖基氟化物19与原位形成的乙烯基铝烷衍生物32偶联形成所需的C(7)C(8)β-C-糖苷键。C(13)C(14)反式双键的形成是通过砜片段49与醛中间体35的缩合完成的,从而形成了伞形蛋白的完整骨架骨架。皂化51,然后切割苄基保护基团得到天然ambrutticin。