Acta Crystallographica Section E (Feb 2008)

Aromaticine, a sesquiterpene lactone from Amblyopappus pusillus

  • Matías López-Rodríguez,
  • Luis Alberto Loyola,
  • Jorge Bórquez,
  • Iván Brito

DOI
https://doi.org/10.1107/s1600536808002729
Journal volume & issue
Vol. 64, no. 2
pp. o529 – o529

Abstract

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Aromaticine (systematic name: 4a,8-dimethyl-3-methylene-3,3a,4,4a,7a,8,9,9a-octahydroazuleno[6,5-b]furan-2,5-dione), C15H18O3, is a natural lactone isolated from Amblyopappus pusillus. The molecular structure and conformation agree with the results of Romo, Joseph-Nathan & Díaz [(1964). Tetrahedron, 20, 79–85]. The fused-ring system contains a seven-membered ring in a twist-boat conformation and two five-membered rings trans fused in envelope conformations.