Hydroperoxycacalone: A New Furanoeremophilane from Psacalium decompositum - Jiménez-Estrada, Manuel; Navarro-Ocaña, Arturo; Villanueva, Eloy; Paredes-González, Beatriz; Reyes-Chilpa, Ricardo; Román-Ramos, Ruben; Alarcón, Francisco (Planta Medica, 1997)