Synthesis of the 4,5-epoxybicyclo[7.3.0]dodecadiyne neocarzinostatin core structure. Surprising compatibility of the 4,5-epoxide with a η2-hexacarbonyldicobalt mediated aldol reaction
Abstract
The highly functionalized neocarzinostatin core structure 16 has been synthesized from the enynone 9 in a hexacarbonyldicobalt mediated aldol reaction in which the epoxide ring is unexpectedly not opened.
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