New 3,4‐Secocycloartane and 3,4‐Secodammarane Triterpenes from the Ecuadorian Plant Coussarea macrophylla

  title={New 3,4‐Secocycloartane and 3,4‐Secodammarane Triterpenes from the Ecuadorian Plant Coussarea macrophylla},
  author={Gianluca Gilardoni and Ximena Chiriboga and Paola Vita Finzi and Giovanni Vidari},
  journal={Chemistry \& Biodiversity},
Coussarea macrophylla (Mart.) Müll.Arg. (Rubiaceae) was collected in Ecuador, and the bark was extracted with AcOEt. Chromatographic separation afforded six novel 3,4‐secocycloartane and 3,4‐secodammarane triterpenes, named macrocoussaric acids A–F, together with the known metabolites secaubryenol and 3,4‐secodammara‐4(28),20,24‐triene‐3,26‐dioic acid. The structures of the new compounds were determined on the basis of their spectroscopic data. This is the first report of 3,4‐secocycloartane… 
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