Synthesis of the Benz[<i>a</i>]anthraquinone Core of Angucyclinone Antibiotics
作者:Aris Kalogerakis、Ulrich Groth
DOI:10.1021/ol0274920
日期:2003.3.1
GraphicsA general method for the synthesis of benz[a]anthraquinones is reported. The key step is a catalytic cobalt-mediated [2+2+2]-cycloaddition of a triyne, which affords an angularly substituted tetracycle. Oxidation of this core gives the typical structure of angucyclinone antibiotics.