Crystal structure of erioflorin isolated fromPodanthus mitiqui(L.).
The title compound, erioflorin, C19H24O6[systematic name: (1aR,3S,4Z,5aR,8aR,9R,10aR)-1a,2,3,5a,7,8,8a,9,10,10a-deca-hydro-3-hy-droxy-4,10a-dimethyl-8-methyl-idene-7-oxooxireno[5,6]cyclo-deca-[1,2-b]furan-9-yl methacrylate], is a tricyclic germacrane sesquiterpene lactone, which was isolated fromPodanthus mitiqui(L.). The compound crystallizes in the space groupP212121, and its mol-ecular structure consists of a methacrylic ester of a ten-membered ring sesquiterpenoid annelated with an epoxide and a butyrolactone. The structure is stabilized by one intramolecular C-H⋯O hydrogen bond. An O-H⋯O hydrogen bond and further C-H⋯O interactions can be observed in the packing.
Universidad de La Frontera, Departamento de Ciencias Quimicas y Recursos Naturales, Avenida Francisco Salazar 01145, 4811230 Temuco, Chile.
Cristian
C
Paz
Universidad Austral de Chile, Instituto de Ciencias Quimica, Facultad de Ciencias, Casilla 567, 5090000 Valdivia, Chile.
Leandro
https://orcid.org/0000-0002-8521-1469
L
Ortiz
Universität Potsdam, Institut für Chemie, Anorganische Chemie, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany.
Uwe
U
Schilde
Podanthus mitiqui; crystal structure; germacrane sesquiterpene lactone