3 documents found, page 1 of 1
Spatial and Temporal Variations in Secondary Metabolites Content of the Brazili...
Gobbo-Neto,Leonardo; Bauermeister,Anelize; Sakamoto,Humberto T.; Gouvea,Dayana R.; Lopes,João Luis C.; Lopes,Norberto P.The genus Lychnophora (Asteraceae) is a medicinal plant traditionally used as anti-inflammatory or analgesic agent. Its biological properties have been widely investigated and correlated with its chemical composition, which could be different between the species and even accordingly to the place and season of collection. In this work, it was investigated the spatial and temporal variations in the secondary meta...
Seasonal variation of the major secondary metabolites present in the extract of...
Gouvea,Dayana Rubio; Gobbo-Neto,Leonardo; Sakamoto,Humberto T.; Lopes,Norberto Peporine; Lopes,João Luís Callegari; Meloni,FernandoThe species Eremanthus mattogrossensis, known as "veludo do cerrado" (cerrado velvet), is native to the Brazilian Cerrado. Because the amount of metabolites present in plants may be influenced by biological and environmental factors, here we conducted an HPLC-DAD-MS/MS investigation of the metabolite concentrations found in the MeOH/H2O extract of the leaves of this species. The main compounds were identified a...
Quantitative HPLC analysis of sesquiterpene lactones and determination of chemo...
Sakamoto,Humberto T.; Gobbo-Neto,Leonardo; Cavalheiro,Alberto J.; Lopes,Norberto P.; Lopes,João L. C.Eremanthus seidelii MacLeish & Schumacher has a restricted occurrence to the Brazilian "cerrado" surrounding the Furnas (MG) reservoir, in environments that have been seriously damaged by human activity. The present phytochemical investigation reveals that the sesquiterpene lactones (SL) 4beta,5-dihydro-2',3'-dihydroxy-15-desoxy-goyazensolide (1) and 4beta,5-dihydro-1',2'-epoxy-eremantholide-C (2) are the m...