title: Eudesmanolides from Dimerostemma vestitum.
abstract: A leaf rinse extract with dichloromethane from Dimerostemma vestitum afforded five new eudesmanolides (1-5) along with the known flavone eupafolin. Compounds 1-5 were isolated by chromatographic methods, and their structures were elucidated by spectral analyses. Eudesmanolides 1-4 show a functional group substitution pattern so far unreported in the subtribe Verbesininae (tribe Heliantheae) of the family Asteraceae.
authors.affiliation: Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo (USP), Avenida dos Bandeirantes, 3900, Bloco Q, 14040-901, Ribeirão Preto, SP, Brazil.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Stefani
authors.forename: Marcos N
authors.initials: MN
authors.lastname: Eberlin
authors.forename: Daniela M
authors.initials: DM
authors.lastname: Tomazela
authors.forename: Fernando B
authors.initials: FB
authors.lastname: Da Costa
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D001938:Brazil; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012717:Sesquiterpenes