Análise quimiométrica usando RMN de 13C como ferramenta para diferenciar duas espécies de Maytenus

Abstract

Maytenus robusta was recently synonymized with Maytenus gonoclada due to overlapping of morphological characters used in the botanical classification. The present study investigates the chemical differences betweenMaytenus gonoclada and Maytenus robusta using chemometric analysis. The 13 C NMR data of different triterpenes obtained from these species were evaluated with Principal Component Analysis (PCA). Friedelanes were the main metabolites that contributed to the recognition of differences among these two taxa.Chemometric analysis seems to be an important tool in Celastraceae taxonomy.