Artículos de revistas
Eudesmanolides and Methyl Ester Derivatives from Dimerostemma arnottii
Fecha
2010Registro en:
NATURAL PRODUCT COMMUNICATIONS, v.5, n.5, p.669-674, 2010
1934-578X
Autor
AMBROSIO, Sergio Ricardo
STEFANI, Ricardo
HELENO, Vladimir Constantino Gomes
MENEZES, Marcio Antonio de
FERREIRA, Antonio Gilberto
NASCIMENTO, Paulo Gustavo Barboni Dantas
MAGENTA, Mara Angelina Galvao
COSTA, Fernando Batista Da
Institución
Resumen
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 ID 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.