Total Synthesis and Structural Assignment of (−)‐Fusaequisin A
作者:Ann‐Christin Schmidt、Martin Hiersemann
DOI:10.1002/chem.202103558
日期:2022.1.24
Constitutional reassignment and configurational assignment of (−)-fusaequisin A, an irregularly assembled polyketide from the ascomycete Fusarium equiseti, was accomplished by totalsynthesis. Structural assignment fuels the proposition that Podospora curvicolla (order Sordiales) and Fusarium equiseti (order Hypocreales) possess a common biosynthetic machinery to produce polyketides of solitary architecture
(-)-fusaequisin A 是一种来自木贼镰刀菌的不规则组装的聚酮化合物,其结构重新分配和构型分配是通过全合成完成的。结构分配助长了Podospora curvicolla(Sordiales 目)和Fusarium equiseti(Hypocreales目)拥有共同的生物合成机制来生产单独结构的聚酮化合物的命题。
Construction of a fully substituted cyclopentenone as the core skeleton of stemonamide via a Nazarov cyclization
作者:Kentaro Yaji、Mitsuru Shindo
DOI:10.1016/j.tetlet.2010.08.032
日期:2010.10
A synthetic study of the Stemona alkaloid stemonamide is described. The FeCl(3)-promoted fast Nazarov reaction of beta-alkoxy divinyl ketones in the presence of t-BuOH afforded an alpha-methylene cyclopentenone, which was subsequently subjected to the Rh-catalyzed C-H amination to provide a fully appropriately substituted alpha-methylene cyclopentenone as the core skeleton of stemonamide. (C) 2010 Elsevier Ltd. All rights reserved.