title: Cembranoid diterpenes and a briarane diterpene from corals.
abstract: Two new cembrane diterpenes (+)-polydactylide (1) and (+)-7alpha,8beta-dihydroxydeepoxysarcophine (2) together with (+)-sarcophine (3) and (+)-sarcophytoxide (4) have been isolated from the soft coral Sinularia polydactyla. The new cembrane diterpene (-)-7beta-hydroxy-8alpha-methoxydeepoxysarcophine (5) has been obtained from the soft coral Sarcophyton trocheliophorum and the known briarane diterpene briaexcavatolide W (6) from the gorgonian coral Briareum sp.The structures were determined primarily by NMR spectroscopy. The assignment of NMR signals was performed by means of (1)H-(1)H COSY, ROESY, HMQC and HMBC experiments.
authors.affiliation: University of Bayreuth, Organic Chemistry, NW II, D-95440 Bayreuth, Germany.
authors.forename: Daniela
authors.initials: D
authors.lastname: Grote
authors.forename: Hesham S M
authors.initials: HS
authors.lastname: Soliman
authors.forename: Kamel H
authors.initials: KH
authors.lastname: Shaker
authors.forename: Mohamed
authors.initials: M
authors.lastname: Hamza
authors.forename: Karlheinz
authors.initials: K
authors.lastname: Seifert
mesh_terms: D000818:Animals; D037421:Anthozoa / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D015394:Molecular Structure; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D004224:Diterpenes