stereochemical determination of the potent antifungal agents leupyrrin A1 and B1 and the total synthesis of leupyrrin A1 are reported. The relative and absolute configuration was determined by a combination of high field NMR studies, molecular modeling, and chemical derivatization. The expedient total synthesis involves a one-pot sequential Zr-mediated oxidative diyne-cyclization/regioselective opening
报道了强效抗真菌剂 leupyrrin A1 和 B1 的立体
化学测定以及 leupyrrin A1 的全合成。相对和绝对构型由高场 NMR 研究、分子建模和
化学衍生化的组合确定。权宜之计的全合成包括一锅顺序 Zr 介导的氧化二炔环化/区域选择性开放序列,用于制备独特的二氢
呋喃环,一种高度立体选择性的丁内酯一锅法,一种具有挑战性的 sp(2)-sp(3) ) Suzuki 偶联和高产椎名大环内酯化。