4.7 Article

Synthesis of the 6,6,5,7-etracyclic core of daphnilongeranin B

Journal

CHEMICAL COMMUNICATIONS
Volume 50, Issue 40, Pages 5294-5297

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cc47873d

Keywords

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Funding

  1. Ministry of Science Technology [2013CB836900]
  2. National Natural Science Foundation of China [21290180, 21172235, 21222202]

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An efficient approach toward the synthesis of the 6,6,5,7-tetracyclic core of the daphnilongeranin B, a Daphniphyllum alkaloid, is reported. The bridged 6,6-bicyclic system was constructed using a gold(I) catalysed Conia-ene reaction, while the 5-and 7-membered rings were assembled by two diastereoselective Michael addition reactions, respectively.

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