title: A monoclinic form of dendocarbin A: a borderline case of one-dimensional isostructural polymorphism.
abstract: The title compound, dendocarbin A [systematic name: (1R,5aS,9aS,9bR)-1-hydroxy-6,6,9a-trimethyldodecahydronaphtho[1,2-c]furan-3-one], C15H22O3, is a sesquiterpene lactone isolated from Drimys winteri var chilensis. The monoclinic phase described herein displays an identical molecular structure to the orthorhombic phase that we reported previously [Paz Robles et al. (2014). Acta Cryst. C70, 1007-1010], while varying significantly in chain pitch, and can thus be considered as a borderline case of one-dimensional isostructural polymorphism.
authors.affiliation: Departamento de Ciencias Químicas y Recursos Naturales, Facultad de Ingeniería, Universidad de La Frontera, Temuco, Chile.
authors.forename: Cristian
authors.initials: C
authors.lastname: Paz
authors.affiliation: Departamento de Ciencias Químicas y Recursos Naturales, Facultad de Ingeniería, Universidad de La Frontera, Temuco, Chile.
authors.forename: Viviana
authors.initials: V
authors.lastname: Burgos
authors.affiliation: Departamento de Química Inorgánica, Analítica y Química, Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
authors.forename: Sebastián
authors.initials: S
authors.lastname: Suarez
authors.affiliation: Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Buenos Aires, Argentina.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Baggio
mesh_terms: D003460:Crystallization; D032424:Drimys / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry* / Q000302:isolation & purification; D015394:Molecular Structure; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D007783:Lactones; D012717:Sesquiterpenes; C000596737:dendocarbin A
keywords: Dendocarbin A; Drimys winteri extract; isostructural polymorphism; monoclinic polymorphic form crystal structure; natural product; sesquiterpene lactone