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Aucubinine B(4),a monoterpene alkaloid obtained from themetabolites of aucubin in the presence of human intestinal bac-teria,has been synthesized from 3-bromo-4-pyridinecarbox-aldehyde(5)in four steps with 39% overall yield.The con-struction of the cyclopenta[c]pyridine intermediate(7)was re-alized by an intramolecular Heck reaction.
Aucubinine B (4), a monoterpene alkaloid obtained from the themetabolites of aucubin in the presence of human intestinal bac-teria, has been synthesized from 3-bromo-4-pyridinecarboxaldehyde (5) in four steps with 39% overall yield. con-struction of the cyclopenta [c] pyridine intermediate (7) was re-alized by an intramolecular Heck reaction.