Prospecção Química de Lippia insignis Moldenke (Verbenaceae)

Abstract

This paper describes the first chemical study of the speciesLippia insignis Moldenke (Verbenaceae), collected in Feira de Santana – BA. From the ethanolic extract of the stems was isolated four compounds: the phenylpropanoid heteroside verbascoside; the lignane isolaricesinol; and the iridoids adoxoside and caryoptoside. From the extract of the leaves was isolated the flavonoid scutellarein 7-O-glucopiranoside. The Nuclear Magnetic Ressonance thecnics (NMR-¹H, ¹³C, COSY, HSQC, HMBC), infrared (IR) and mass spectrometry (MS) as well as the comparison of literature data were used to the structural determination of the isolated metabolites. It was the first relate of the isolated iridoid adoxoside in the genre Lippia. All the isolated compounds have pharmacological activity related in the literature. The chemical study of L. insignis species corroborates to a better understanding of the chemotaxonomy of genus Lippia, confirming the chemical profile of the genre and putting the species as a new source of bioactive molecules.