“…Bibliographical research on chemical constituents already isolated from species of the genus Dahlstedtia, showed that flavonoids are among the compounds found in greater profusion, especially chalcones, flavones and flavanones (Magalhães, Tozzi, Magalhães, Blanco, & Soriano, 2004;Lima, 2007;Lima et al, 2009), and these compounds are characterized by the presence of prenylated groups, which are indicators of the evolution of these species (Garcez, Scramin, Nascimento, & Mors, 1988). According to Simões et al (2010), flavonoids represent one of the most important and diverse groups among the secondary metabolites present in plants, since it plays a fundamental role in the protection of the plant in response to microbial attack and against ultraviolet irradiation, protecting the underlying photosynthetic tissues from damage (Harborne & Williams, 2000;Lattanzio, Kroon, Quideau, & Treutter, 2008;Ignat, Volf, & Popa, 2011).…”