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Details of a biogenetically inspired strategy that led to the synthesis of the hetidine‐type C20‐diterpenoid alkaloid skeleton are reported in this paper. Key steps of our synthesis include a C—H oxidation to convert the atisine‐type core to the ajaconine skeleton, as well as an aza‐Prins cyclization that establishes the hetidine alkaloid skeleton. An unexpected heptacyclic framework bearing a unique...
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