The photosensitized oxygenation of furanoeremophilanes. The preparation and stereochemistry of the tsomeric hydroperoxides and corresponding lactones from furanofukinki and furanoeremophilane - Naya,K.; Nogi,N.; Makiyama,Y.; Takashina,H.; Imagawa,T. (Bull Chem Soc Jpn, 1977)