Cembranoid diterpenes and a briarane diterpene from corals.
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.
Grote
Daniela
D
University of Bayreuth, Organic Chemistry, NW II, D-95440 Bayreuth, Germany.
Soliman
Hesham S M
HS
Shaker
Kamel H
KH
Hamza
Mohamed
M
Seifert
Karlheinz
K
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
D004224:Diterpenes