作者: Vladimir I Tyvorskii , Dmitry A Astashko , Oleg G Kulinkovich , None
DOI: 10.1016/J.TET.2003.12.027
关键词:
摘要: Abstract 1-(2-Oxiranyl)-1,4-alkanediones were prepared from the ethylene acetals of ethyl 4-oxoalkanoates via oxidation intermediate 1,2-dialkylcyclopropanols having a protected carbonyl group in an aliphatic chain. Intramolecular acetalization these epoxy dicarbonyl compounds gave alkylated 6,8-dioxabicyclo[3.2.1]octan-2-ones good yields. The latter found suitable to be precursors for (±)-endo-brevicomin and its 2-hydroxy derivative, as well (±)-endo-isobrevicomin (±)-frontalin.