Pyridone Annulation via Tandem Curtius Rearrangement/6π-Electrocyclization: Total Synthesis of (−)-Lyconadin C
作者:Xiayun Cheng、Stephen P. Waters
DOI:10.1021/ol401954f
日期:2013.8.16
A concise, enantioselective totalsynthesis of the Lycopodium alkaloid (−)-lyconadin C was achieved in 12 steps and high overall yield. Key features include construction of a luciduline congener through Mannich-type cyclization and a one-pot, tandem Curtius rearrangement/6π-electrocyclization to fashion the 2-pyridone system of lyconadin C.
作者:Renzo A. Samame、Christina M. Owens、Scott D. Rychnovsky
DOI:10.1039/c5sc03262h
日期:——
Biomimetic transannular Mannich cyclization led to (+)-fastigiatine.
仿生跨环Manich环化反应导致了(+)-fastigiatine。
Concise Total Syntheses of the <i>Lycopodium</i> Alkaloids (±)-Nankakurines A and B via Luciduline
作者:Xiayun Cheng、Stephen P. Waters
DOI:10.1021/ol902455y
日期:2010.1.15
Total syntheses of the Lycopodium alkaloids nankakurines A and B have been accomplished in 6 and 7 steps, respectively, via a sequence that passes through a third Lycopodium alkaloid, luciduline, and forgoes the use of protecting groups on nitrogen. Key features include a short preparation of luciduline followed by a concise and stereoselective aminoallylation/ring-closing metathesis protocol to fashion the spiropiperidine ring common to nankakurines A and B.