New cladiellane diterpenes from the soft coral Cladiella australis of the Andaman and Nicobar Islands.
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.
Rao
C B
CB
School of Chemistry, Andhra University, Visakhapatnam, India.
Rao
D S
DS
Satyanarayana
C
C
Rao
D V
DV
Kassühlke
K E
KE
Faulkner
D J
DJ
D000107:Acetylation; D000818:Animals; D003063:Cnidaria / Q000378:metabolism*; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D013237:Stereoisomerism
C577613:3-butanoyloxycladiell-11(17)-en-6,7-diol; D004224:Diterpenes