Chemical characterization by liquid chromatography and chemometric analysis of Bauhinia species (popularly known as pata-de-vaca ) with applications in quality control of commercial samples. The infusion of leaves from ...

In this work were isolated eighteen secondary metabolites from Ruta graveolens (Rutaceae), eleven alkaloids (five akridonic, five quinolinics and one quinolonic) and seven furanocoumarins. Thirteen compounds had their ...

In the last few years the phytotherapy has emerged as a drug form well accepted and accessible, causing the increase in demand for drugs based on plants throughout the world, becoming an attraction for the pharmaceutical ...

CHEMICAL STUDY OF PATHOGENS AND VECTORS DISEASE OF CITRUS: Xylella fastidiosa & Diaphorina citri. Historically the national citriculture suffered great changes because of phytosanitary problems, and nowadays among the main ...

In this work, a study of different synthetic ways was made in order to obtain spiro compounds starting from R-(-)-carvone, getting to the formation of cycloheptenone as an intermediate, which undergoes two consecutives ...

The application of Continuous Wave Free Precession (CWFP) method for solvent suppression in high resolution NMR spectroscopy is reported. The applied methodology was based in the use of conventional pulse sequence that use ...

In this work was developed a new synthetic route to obtain cicloeptenone not conjugated selectively, through a faster and simpler methodology, and in accordance with good practices of green chemistry. By experimental ...

Plant cell walls are composed of approximately 65% cellulose microfibrils and pectin. The latter is proteolytically degraded by the so-called pectinases enzymes (also known as pectinolytic enzymes). Pectinases may be either ...

In this work it was done a comparative study on the reactivity of a variety of dienophiles including para-benzoquinones, their mono-oximes, their N-tosyl mono-oximes and their N-tosylimines on the Diels-Alder reactions ...