Synthesis of the Benz[a]anthraquinone Core of Angucyclinone Antibiotics
摘要:
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.
Synthesis of the Benz[a]anthraquinone Core of Angucyclinone Antibiotics
摘要:
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.