Dioncophylline E from Dioncophyllum thollonii, the first 7,3'-coupled dioncophyllaceous naphthylisoquinoline alkaloid (Publications)
The isolation and structural elucidation of dioncophylline E, a novel naphthylisoquinoline alkaloid from the rare West African liana Dioncophyllum thollonii, is described. The alkaloid displays an unu
Antitrypanosomal cycloartane glycosides from Astragalus baibutensis (Publications)
Baibutoside (5), a new cycloartane-type triterpene glycoside, has been isolated from the roots of Astragalus baibutensis along with four known glycosides, acetylastragaloside I (1), and astragalosides
Exposure modeling of high-frequency electromagnetic fields (Publications)
We developed a geospatial model that calculates ambient high-frequency electromagnetic field (HF-EMF) strengths of stationary transmission installations such as mobile phone base stations and broadcas
Evaluation of larvicidal and in vitro antiparasitic activities of plants in a biodiversity plot in the Altos de Campana National Park, Panama1 (Publications)
This TDR/WHO project was carried out from 2003 to 2005 in an 0.1-ha biodiversity plot in the Altos de Campana National Park to discover novel active antiparasitic and larvicidal compounds in Panamania