Anodic Coupling Reactions: A Sequential Cyclization Route to the Arteannuin Ring Skeleton
作者:Honghui Wu、Kevin D. Moeller
DOI:10.1021/ol702118n
日期:2007.10.1
reactions has been used to construct the arteannuin ring skeleton. Both coupling reactions took advantage of a furan ring as one of the coupling partners. In the first, it was found that an enol ether derived from an aldehyde was not an effective initiating group for the reaction. Instead, the cyclization benefited strongly from the use of a N,O-ketene acetal initiating group. In the second cyclization
一对分子内阳极烯烃偶联反应已被用于构建青蒿素环骨架。两种偶联反应都利用呋喃环作为偶联伙伴之一。首先,发现由醛衍生的烯醇醚不是反应的有效引发基团。相反,环化从 N,O-烯酮缩醛起始基团的使用中受益匪浅。在第二次环化中,环内烯醇醚与呋喃环偶联。第二次电解反应在青蒿素环骨架的中心产生了关键的四取代碳。