Spirodiepoxide Strategy to the C Ring of Pectenotoxin 4: Synthesis of the C1−C19 Sector
摘要:
The synthesis of a C1-C19 precursor to pectenotoxin 4 is presented, The strategy employed the functionalized allene shown. Key features include: olefin metathesis of two simple fragments to prepare the left portion of the allene-precursor, diastereoselective propargylation of an epoxy aldehyde to form the right portion, use of the DMDO-stable m-fluorobenzyl ether, and an allene spirodiepoxidation/C-ring formation cascade.
Spirodiepoxide Strategy to the C Ring of Pectenotoxin 4: Synthesis of the C1−C19 Sector
摘要:
The synthesis of a C1-C19 precursor to pectenotoxin 4 is presented, The strategy employed the functionalized allene shown. Key features include: olefin metathesis of two simple fragments to prepare the left portion of the allene-precursor, diastereoselective propargylation of an epoxy aldehyde to form the right portion, use of the DMDO-stable m-fluorobenzyl ether, and an allene spirodiepoxidation/C-ring formation cascade.
Spirodiepoxide Strategy to the C Ring of Pectenotoxin 4: Synthesis of the C1−C19 Sector
作者:Sipak Joyasawal、Stephen D. Lotesta、N. G. Akhmedov、Lawrence J. Williams
DOI:10.1021/ol902984e
日期:2010.3.5
The synthesis of a C1-C19 precursor to pectenotoxin 4 is presented, The strategy employed the functionalized allene shown. Key features include: olefin metathesis of two simple fragments to prepare the left portion of the allene-precursor, diastereoselective propargylation of an epoxy aldehyde to form the right portion, use of the DMDO-stable m-fluorobenzyl ether, and an allene spirodiepoxidation/C-ring formation cascade.