Enantioselective Formal Total Synthesis of (+)-Aspergillide C
作者:Joseph D. Panarese、Stephen P. Waters
DOI:10.1021/ol902154p
日期:2009.11.5
An enantioselective formal total synthesis of the cytotoxic macrolide (+)-aspergillide C has been accomplished from (S)-(−)-glyceraldehydeacetonide and the Danishefsky−Kitahara diene. Strategic transformations include a hetero Diels−Alder reaction, Ferrier-type addition, and palladium-catalyzed oxidative lactonization to set key stereocenters within the dihydropyran core, followed by fragment coupling
细胞毒性大环内酯 (+)-曲霉内酯 C 的对映选择性正式全合成已从 ( S )-(-)-甘油醛丙酮化物和丹麦谢夫斯基-北原二烯完成。战略转化包括杂 Diels-Alder 反应、Ferrier 型加成和钯催化氧化内酯化以在二氢吡喃核心内设置关键立体中心,然后通过 ( E ) 选择性 Julia-Kocienski 烯化进行片段偶联。
Enantioselective Total Synthesis of Aspergillide C
作者:Tomohiro Nagasawa、Shigefumi Kuwahara
DOI:10.1021/ol802803x
日期:2009.2.5
The first enantioselective totalsynthesis of aspergillide C, a cytotoxic 14-membered macrolide isolated from the marine-derived fungus Aspergillus ostianus, has been accomplished from a commercially available chiral glycidol derivative by a 12-step sequence involving an expeditious preparation of a cyclic acetal intermediate and a trans-selective Ferrier-type two-carbon homologation reaction.