LAUSR

Abstract The leaf essential oil of Laggera pterodonta (DC.) Sch. Bip. ex Oliv. (Asteraceae) collected in the Eastern Côte d’Ivoire was investigated using a combination of chromatographic (GC-RI, CC, pc-GC) and spectroscopic (GC-MS, 13C NMR) techniques. Eighty-three components accounting for 98.0% of the whole composition were identified with 2,5-dimethoxy-p-cymene (43.3%), sabinene (14.1%), α-humulene (9.8%), (E)-β-caryophyllene (7.2%) and germacrene D (5.2%) as major compounds. This study led to the structural elucidation of a new natural compound, (3αH,4βH,6αH,1αMe)-1,6-epoxy-3-hydroxycarvotanacetone, angelic acid ester from the leaf oil by 1D and 2D NMR spectroscopy.