Total Synthesis of Tiacumicin A. Total Synthesis, Relay Synthesis, and Degradation Studies of Fidaxomicin (Tiacumicin B, Lipiarmycin A3)
作者:Hiromu Hattori、Elias Kaufmann、Hideki Miyatake-Ondozabal、Regina Berg、Karl Gademann
DOI:10.1021/acs.joc.8b00101
日期:2018.7.6
commercial macrolide antibiotic fidaxomicin was synthesized in a highly convergent manner. Salient features of this synthesis include a β-selective noviosylation, a β-selective rhamnosylation, a ring-closing metathesis, a Suzuki coupling, and a vinylogous Mukaiyama aldol reaction. Careful choice of protecting groups and fine-tuning of the glycosylation reactions led to the first total synthesis of fidaxomicin
商业化大环内酯类抗生素非达米星是以高度收敛的方式合成的。该合成的显着特征包括β-选择性壬基甲酰化,β-选择性鼠李糖基化,闭环易位,Suzuki偶联和乙烯基Mukaiyama aldol反应。仔细选择保护基团和糖基化反应的微调导致了非达索霉素的首次全合成。另外,建立了非达索霉素的接替合成,其可以从天然材料获得方便保护的中间体以进行衍生化。介绍了相关同源物头孢菌素A的第一个全合成。