title: New cladiellane diterpenes from the soft coral Cladiella australis of the Andaman and Nicobar Islands.
abstract: Five new cladiellane diterpenes, (1R*,2R*,3R*,6S*,7S*,9R*,10R*,14R*)-3- acetoxy-6-(3-methylbutanoyloxy)cladiell-11(17)-en-7-ol [2], (1R*,2R*,3R*,6S*,7S*,9R*, 10R*,14R*)-3-butanoyloxycladiell-11(17)-en-6,7-diol [3], (1R*,2R*,3R*,6S*,9R*,10R*,14R*)-3-acetoxycladiell-7(16),11(1 7)-dien-6-ol [4], 3-acetoxycladiell-11(17)-en-6-one [5], and its stereoisomer [6], have been isolated from the soft coral Cladiella australis collected on the coasts of the Andaman and Nicobar Islands of the Indian Ocean. In addition, sclerophytins C [7] and E [8], reported earlier from Sclerophytum capitalis, were also isolated. The structures of these metabolites were elucidated by interpretation of spectral data.
authors.affiliation: School of Chemistry, Andhra University, Visakhapatnam, India.
authors.forename: C B
authors.initials: CB
authors.lastname: Rao
authors.forename: D S
authors.initials: DS
authors.lastname: Rao
authors.forename: C
authors.initials: C
authors.lastname: Satyanarayana
authors.forename: D V
authors.initials: DV
authors.lastname: Rao
authors.forename: K E
authors.initials: KE
authors.lastname: Kassühlke
authors.forename: D J
authors.initials: DJ
authors.lastname: Faulkner
mesh_terms: D000107:Acetylation; D000818:Animals; D003063:Cnidaria / Q000378:metabolism*; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D013237:Stereoisomerism
chemical_list: C577613:3-butanoyloxycladiell-11(17)-en-6,7-diol; D004224:Diterpenes