Enantioselective catalyst efficiency for the synthesis of the camptothecin family was improved through ligand-tuning. Key intermediates of two convergent syntheses of camptothecin (Curran's intermediate and Corey's intermediate) were obtained in up to 10 g scale through the catalytic enantioselective cyanosilylation of ketones.
通过调节
配体提高了
喜树碱家族合成的对映选择性催化剂的效率。通过酮的催化对映选择性
氰基
硅烷化,
喜树碱的两种聚合合成的关键中间体(Curran's中间体和Corey's中间体)以高达10 g的规模获得。