[reaction: see text] Furanomycin is a Streptomyces metabolite that substitutes for isoleucine in protein translation. We report a concise and modular synthesis starting from the Garner aldehyde and proceeding in seven steps to furanomycin. The key steps include a stereoselective acetylide addition and the Ag+-mediated cyclization of an alpha-allenic alcohol to construct the trans-2,5-dihydrofuran.
[反应:请参阅文本]富那霉素是链霉菌的代谢产物,可替代蛋白质翻译中的
异亮氨酸。我们报告了一种简洁而模块化的合成方法,从加纳醛开始,逐步进行了七步合成
呋喃霉素。关键步骤包括添加立体选择性
乙炔化物和由Ag +介导的α-烯醇的环化反应,以构建反式
2,5-二氢呋喃。该路线的效率(总收率12%)和灵活性将为蛋白质工程提供大量的
呋喃霉素和类似物。