Total Syntheses of Bryostatins: Synthesis of Two Ring-Expanded Bryostatin Analogues and the Development of a New-Generation Strategy to Access the C7-C27 Fragment
作者:Barry M. Trost、Hanbiao Yang、Guangbin Dong
DOI:10.1002/chem.201002932
日期:2011.8.22
synthesis of novel ring‐expanded bryostatin analogues. By carefully modifying the substrate, a selective and high‐yielding Ru‐catalyzed tandem enyne coupling/Michael addition was employed to construct the northern fragment. Ring‐closing metathesis was utilized to form the 31‐membered ring macrocycle of the analogue. These ring‐expanded bryostatin analogues possess anticancer activity against several
在此,我们报告了新型扩环苔藓抑素类似物的合成。通过仔细修改底物,采用选择性和高产率的 Ru 催化串联烯炔偶联/迈克尔加成来构建北部片段。利用闭环复分解形成类似物的 31 元环大环。这些扩环的苔藓抑素类似物对几种癌细胞系具有抗癌活性。鉴于在后期形成 C16-C17 烯烃的困难,我们还描述了我们开发的新一代策略,以获取包含环 B 和 C 亚基的 C7-C27 片段。