• Nuevas lactonas sesquiterpénicas de Perymenium grande 

      Murillo Masís, Renato; Castro Araya, Víctor H.; Araya, J.; Poveda Álvarez, Luis Jorge (2009-01-13)
      Three new sesquiterpenes lactonaes were isolated from the aerial parts of Perymenium grande Hemsl. (Asteraceae), collected around Rincón de la Vieja  Volcano, Costa Rica. In addition to the three new lactones 1, 3 and 5; ...