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Home » total synthesis » Total Synthesis of (+)-Granatumine A and Related BislactoneLimonoid Alkaloids via a Pyran to Pyridine Interconversion

Total Synthesis of (+)-Granatumine A and Related BislactoneLimonoid Alkaloids via a Pyran to Pyridine Interconversion

J. Am. Chem. Soc. 2019, 141, 9191−9196 DOI: 10.1021/jacs.9b04508 full text link

文献汇报人:章青余

汇报日期: 20190615

图文摘要:

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推荐原因:

首次报道了(+)-Granatumine A的合成。作者用6步合成两个片段,并用Knoevenagel反应将两个片段汇聚在一起,并通过电环化构建最后吡啶环,整个合成总共十步,简洁高效。此外,在这个合成中作者还报道了两种非常有用的方法:一是用烯丙基钯催化酮α,β脱氢化得到α,β不饱和酮。二是用钯催化环氧酮得到1,3二酮。

 


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