IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Chlorinated anthraquinones as Type 1 photosensitizers
Autor/es:
JA DIMMER; LR COMINI; SC NÚÑEZ MONTOYA; CS MENDOZA; JL CABRERA
Lugar:
Maresias, Sao Paulo
Reunión:
Encuentro; XII LATIN-AMERICAN MEETING ON PHOTOCHEMISTRY AND PHOTOBIOLOGY; 2015
Institución organizadora:
IQSC
Resumen:
Heterophyllaea lycioides (Rusby) Sandwith grows in the Andean region from Bolivia and Perú, and is one of the two species which forms Heterophyllaea genus. From aerial parts, we purified two new anthraquinones (AQs) derivatives for this family of compounds, both characterized by the presence of chlorine in their structures: 5-clorosoranjidiol y 7-clbisoranjidiol. Worth noting that is the first time that AQs containing chlorine are reported for a species of Rubiaceae. Previously, we demonstrated that AQs isolated from the other vegetal specie, H. pustulata, are photosensitizers by acting through Type I and/or Type II mechanisms. Continuing this research line, we propose to determine whether new chlorinated AQs are able to generate superoxide anion radical (O2-.) under irradiation (Type I mechanism).