Synthesis of α-methylene propellanone via the strategic employment of metal-mediated cyclisation chemistry
作者:William J. Kerr、Angus J. Morrison、Laura C. Paterson
DOI:10.1016/j.tet.2015.06.003
日期:2015.8
Biologically active alpha-methylenene propellanone has been synthesised in 12 steps in an overall yield of 11%. The key step of the synthesis, an intramolecular Pauson-Khand reaction, proceeds in good yield under alkyl sulfide promotion conditions, to furnish the 5,5-fused moiety within the target Samarium diiodide-induced intramolecular conjugate addition onto the resulting cyclopentenone was used to complete the intriguing [3.3.3] propellanone skeleton. (C) 2015 Elsevier Ltd. All rights reserved.