Iridoids of chemotaxonomy relevance, a new antirrhinoside ester and other constituents from Kickxia spuria subsp. integrifolia (Brot.) R. Fern
In this work, the secondary metabolite content of the EtOH extract of Kickxia spuria subsp. integrifolia (Brot.) R.Fern. is reported. Fourteen compounds were isolated and identified by means of column chromatography and NMR and MS instrumental techniques, respectively. Among the identified compounds, the chemotaxonomic markers of the species were evidenced, whereas others were reported for the first time in the genus. Among these, a new antirrhinoside derivative (12) was recognized.