Eudesmanolides and methyl ester derivatives from Dimerostemma arnottii.
The phytochemical investigation of Dimerostemma arnottii (Asteraceae) afforded, in addition to a known eudesmanolide, two unusual eudesmane methyl ester derivatives and a new eudesmanolide. Structural elucidation of the compounds was based on their 1D and 2D NMR spectroscopic as well as HR-ESI-MS data. There is a remarkable similarity between the structures of the eudesmanes from D. arnottii and those previously encountered in other Dimerostemma species, which is in agreement with the results of a previous phylogenetic study based on molecular data. The chemotaxonomic relevance of the isolated compounds is briefly discussed.
Ambrosio
Sérgio Ricardo
SR
Nutcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404-600, Franca, SP, Brazil.
Stefani
Ricardo
R
Heleno
Vladimir Constantino Gomes
VC
de Menezes
Márcio Antônio
MA
Ferreira
Antonio Gilberto
AG
Barboni
Paulo Gustavo
PG
Nascimento
Dantas
D
Magenta
Mara Angelina Galvão
MA
Da Costa
Fernando Batista
FB
D019659:Asteraceae / Q000737:chemistry*; D001938:Brazil; D004952:Esters / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010802:Phylogeny; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D013045:Species Specificity; D021241:Spectrometry, Mass, Electrospray Ionization
D004952:Esters; D010936:Plant Extracts; D012717:Sesquiterpenes; C476916:eudesmanolide