title: New xenicanes from Xenia viridis.
abstract: The dichloromethane extract of Xenia viridis afforded two new xenicane diterpenoids (3 and 4) by silica gel chromatography. The oxirane ring of 3 was found to be susceptible to a slow ring opening under acidic conditions to afford 5. Their structures were elucidated by extensive 1D and 2D NMR spectroscopy.
authors.affiliation: Chemistry Department and Center for Natural Sciences and Ecological Research, De La Salle University 2401, Taft Avenue, Manila, Philippines.
authors.forename: Jaime Raul O
authors.initials: JR
authors.lastname: Janairo
authors.forename: Gerardo C
authors.initials: GC
authors.lastname: Janairo
authors.forename: Consolacion Y
authors.initials: CY
authors.lastname: Ragasa
authors.forename: Bruce F
authors.initials: BF
authors.lastname: Bowden
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry*; D008967:Molecular Biology
chemical_list: D004224:Diterpenes