Quenching of singlet molecular oxygen by natural furan diterpenes - Di Mascio, Paolo; Medeiros, Marisa Helena Gennari de; Sies, H; Bertolotti, S; Braslavsky, S E; Veloso, D P; Sales, B H L N; Magalhães, E; Braz, R; Bechara, Etelvino José Henriques (Journal of Photochemistry and Photobiology B-Biology, 1997)