title: New diterpenes from the marine pulmonate Trimusculus peruvianus.
abstract: The family Trimusculidae produce labdane diterpenes, which differ in the degree and type of esterification with acetoxy and isovaleroyl ester, predominantly. In this article, we describe the isolation from the marine pulmonate Trimusculus peruvianus, collected on intertidal rocks of Chilean coasts, of two new labdane diterpenes closely related to the above mentioned characteristics. Their structures were determined by spectroscopic data and correspond to 6beta-hydroxy-labda-8, 13-dien-15-ol and 3, 19-isovaleroyl-6beta, 9alpha-dihydroxylabda-Delta(8,17), 13-dien-15-oic acid.
authors.affiliation: Instituto de Productos Naturales y Agrobiologia del CSIC, La Laguna, Tenerife, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Diaz-Marrero
authors.forename: N
authors.initials: N
authors.lastname: Issi
authors.forename: V
authors.initials: V
authors.lastname: Canales
authors.forename: C
authors.initials: C
authors.lastname: Chamy
authors.forename: A
authors.initials: A
authors.lastname: San-Martin
authors.forename: J
authors.initials: J
authors.lastname: Darias
authors.forename: J
authors.initials: J
authors.lastname: Rovirosa
mesh_terms: D000818:Animals; D002677:Chile; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification*; D004951:Esterification; D008386:Marine Biology; D015394:Molecular Structure; D008974:Mollusca / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular
chemical_list: C533822:3,19-isovaleroyl-6beta,9alpha-dihydroxylabda-delta(8,17),13-dien-15-oic acid; C533821:6beta-hydroxy-labda-8,13-dien-15-ol; D004224:Diterpenes