El Schinus weinmanniifolia (Molle’i) es una de las plantas empleadas en forma de infusión de las hojas para tratar amigdalitis, dolores de garganta, tos e inflamaciones de la encía. Para tratar de establecer una relación entre los metabolitos secundarios presentes y sus actividades biológicas se determinó el Perfil Fitoquímico Cualitativo del extracto crudo, Compuestos fenólicos totales, Flavonoides Totales así como Actividad Antioxidante, Actividad Hemolítica y DL50 en Drosophila melanogaster. Los resultados revelaron la presencia de Taninos hidrolizables, saponinas y esteroles. En los bioensayos se observó elevada Actividad de Antioxidantes (IC=39,9%) y una actividad antimicrobiana del extracto bruto etanólico frente a cepas de E. coli, S. typhimurium, E. faecalis, P. aeruginosa, C. albicans. Se estableció una DL50 de 15,3 mg.mL en Drosophyla melanogaster y además una actividad hemolítica de IC50 de 179 µg.mL con una actividad del 55,9 %. Estos valores representaron un primer aporte a fin de determinar científicamente su actividad biológica y correlacionar con el contenido de moléculas.

This publication reports the controlled cultivation of Zanthoxylum chiloperone var. angustifolium Engl. (Rutaceae) in several growth substrates under controlled greenhouse conditions. This plant is well-known for its anti-Chagas (trypanocidal) activity, related to the presence of several β-carboline alkaloids. The metabolomic study of Z. chiloperone seedlings over two years of growth (2018–2020) was performed using comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC × GC-TOFMS). The canthin-6-one alkaloids, canthin-6-one and 5-methoxy-canthin-6-one, were putatively identified in Z. chiloperone extracts. Finally, in vitro and in silico studies of trypanocidal activity were performed, suggesting that canthin-6-one alkaloids could interact with the main pharmacological targets against Trypanosoma cruzi, cruzain protease, dihydroorotate dehydrogenase, lanosterol 14-alpha-demethylase, farnesyl diphosphate, and squalene synthases.

Lapachol acetate [systematic name: 3-(3-methylbut-2-enyl)-1,4-dioxonaphthalen-2-yl acetate], C₁₇H₁₆O₄, was prepared using a modified high-yield procedure and its crystal structure is reported for the first time 80 years after its first synthesis. The full spectroscopic characterization of the molecule is reported. The molecular conformation shows little difference with other lapachol derivatives and lapachol itself. The packing is directed by intermolecular π–π and C—H...O interactions, as described by Hirshfeld surface analysis. The former interactions make the largest contributions to the total packing energy in a ratio of 2:1 with respect to the latter.