作者:Luiz C. Dias、Carla C. Perez
DOI:10.1002/ejoc.201300012
日期:2013.5
A highly stereoselective synthesis of the C4–C17 fragment of saliniketals A and B was completed. The key steps in this synthesis included a syn-aldol reaction mediated by a boron enolate and a double diastereodifferentiating aldol reaction mediated by a titanium enolate. Moreover, a substrate-controlled Grignard reaction, an intramolecular Wacker-type cyclization and a Seyferth–Gilbert homologation
完成了盐缩酮 A 和 B 的 C4-C17 片段的高度立体选择性合成。该合成的关键步骤包括由硼烯醇化物介导的合成羟醛反应和由钛烯醇化物介导的双非对映分化醛醇反应。此外,底物控制的格氏反应、分子内瓦克型环化和 Seyferth-Gilbert 同源性在 16 个步骤中提供了盐缩酮 A 和 B 的 C4-C17 片段,总产率为 7%。