Perylenequinone natural products: evolution of the total synthesis of cercosporin.
Perylenequinone natural products: evolution of the total synthesis of cercosporin.
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DOI:
10.1021/jo9013854
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发表时间:
2010-01-01
期刊:
影响因子:
--
通讯作者:
Kozlowski MC
中科院分区:
文献类型:
--
作者:
Morgan BJ;Mulrooney CA;Kozlowski MC
The evolution of the first total synthesis of perylenequinone cercosporin is described. The key features developed during these efforts include a biscuprate epoxide alkylation, installation of the methylidene acetal, palladium-catalyzedO-arylation, and C3,C3′-decarbonylation. Due to the rapid atropisomerization of the helical axis of cercosporin (at 37 °C), the sequencing of these transformations was critical. To this end, the developed protocol enabled the formation of a key advanced intermediate on preparative scale absent any atropisomerization. Furthermore, theO-arylation proved to be general, and the strategy was used in an improved synthesis of a helical chiral perylenequinone structure.
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