Caffeic acid derivatives and further compounds from Espeletia barclayana Cuatrec. (Asteraceae, Espeletiinae) - Padilla-Gonzalez, Guillermo F.; Diazgranados, Mauricio; Ccana-Ccapatinta, Gari; Casoti, Rosana; Costa, Fernando Batista da (Biochemical Systematics and Ecology, 2017)