title: Antialgal ent-labdane diterpenes from Ruppia maritima.
abstract: Seven ent-labdane diterpenes have been isolated from Ruppia maritima. The structures 15,16-epoxy-ent-labda-8(17),13(16),14-trien-19-al; 15,16-epoxy-ent-labda-8(17),13(16),14-trien-19-ol acetate; methyl 15,16-epoxy-12-oxo-ent-labda-8(17),13(16),14-trien-19-oate; 15,16-epoxy-ent-labd-8(17),13E-dien-15-ol and 13-oxo-15,16-bis-nor-ent-labd-8(17)-ene have been assigned to the five new compounds by spectroscopic means and chemical correlations. The phytotoxicity of the diterpenes has been assessed using the alga Selenastrum capricornutum as organism test.
authors.affiliation: Dipartimento di Chimica Organica and Biologica, Università Federico II, Naples, Italy.
authors.forename: M
authors.initials: M
authors.lastname: DellaGreca
authors.forename: A
authors.initials: A
authors.lastname: Fiorentino
authors.forename: M
authors.initials: M
authors.lastname: Isidori
authors.forename: P
authors.initials: P
authors.lastname: Monaco
authors.forename: A
authors.initials: A
authors.lastname: Zarrelli
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D056890:Eukaryota / Q000187:drug effects* / Q000254:growth & development; D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry*
chemical_list: D004224:Diterpenes