Versatile Synthesis of Bicyclo[9.3.1]pentadecatriene for New Bicyclic Taxoids
作者:Satoshi Shibuya、Minoru Isobe
DOI:10.1055/s-1998-1683
日期:1998.4
A common carbon skeleton bicyclo[9.3.1]pentadecatriene of taxachitrienes was synthesized in its des-methyl form in short steps. The key step was Nicholas-Hosomi type reaction in the acidic cyclization between ene-yne biscobalthexacarbonyl complex electrophile with allyltrimethylsilane nucleophile. Decomplexation of the biscobalthexacarbonyl was achieved with a tin hydride and NBS in 1,4-cyclohexadiene solvent.