Wild daffodils of the section Ganymedes from the Iberian Peninsula as a source of mesembrane alkaloids.

The aim of this work was to perform a detailed study of the alkaloid content of Narcissus triandrus, as well as a complete analysis of the alkaloid profile of 18 wild populations, comprising all the taxa of the section Ganymedes. Through the application of a combination of spectroscopic and chromatographic methods, the isolation and structural elucidation of 3 compounds are reported for the first time from a natural source (2-oxomesembrenone, 7,7a-dehydromesembrenone and 2-oxoepimesembranol), together with the identification of 5 major common mesembrane alkaloids. Additionally, the GC-MS analysis of the alkaloid profile demonstrated the regular presence of mesembranes in all the studied plants, showing mesembrenone as the predominant compound without any typical Amaryllidaceae alkaloid being detected.

Alkaloids from Narcissus serotinus.

Narcissus serotinus belongs to the Amaryllidaceae family, a group well known for an exclusive variety of alkaloids with interesting biological activities. This study was aimed at identifying the alkaloid constituents of N. serotinus collected in the Spanish region of Valencia, using a combination of chromatographic, spectroscopic, and spectrometric methods, including GC-MS and 2D NMR techniques. GC-MS analysis allowed for the direct identification of five known compounds. In addition, the isolation and structure elucidation of six new Amaryllidaceae alkaloids are described.

Tres nuevos registros del genero Carex (Cyperaceae) para el Perú y adiciones a la flora andina del departamento de Huánuco / Three new records of the genus Carex (Cyperaceae) from Peru and additions to the Andean flora of the Huánuco department

Three new records from Peru (Carex humahuacaensis G.A. Wheeler, Carex peucophila T. Holm y Carex pygmaea Boeck.), and 75 new records of vascular plants are reported for Huánuco department. Its habitat, distribution and the conservation status of endemisms such as: Caiophora cirsiifolia C. Presl, Carex hebetata Boott and Senecio macrorrhizus Wedd. are commented.

Tres nuevos registros para el Perú (Carex humahuacaensis G.A. Wheeler, Carex peucophila T. Holm y Carex pygmaea Boeck.) y 75 nuevos registros para la flora del departamento de Huánuco son dados a conocer. Se informan datos sobre el hábitat, distribución y en el caso de endemismos como: Caiophora cirsiifolia C. Presl, Carex hebetata Boott, y Senecio macrorrhizus Wedd. su estado actual de conservación.