Briarane diterpenoids from the formosan gorgonian Coral Junceella fragilis.
A new trihydroxy briarane-related diterpenoid, junceellolide I (1), along with a known metabolite, (1R,2R,5Z,7R,8S,9R,10R,12R,14R,17S)-2,14-diacetoxy-8,17-epoxy-9,12-dihydroxybriara-5,11(20)-dien-19-one (2), have been isolated from the gorgonian coral Junceella fragilis, collected off the southern Taiwan coast. The structure, including the relative configuration of the new compound 1, was elucidated by the combination of spectral data, particularly in high-resolution 1H- and 13C-NMR spectroscopy utilizing COSY, HMBC, HMQC, and NOESY experiments.
Sung
Ping-Jyun
PJ
National Museum of Marine Biology and Aquarium, Checheng, Pingtung, Taiwan, ROC. pjsung@nmmba.gov.tw
Lin
Mei-Ru
MR
Fang
Lee-Shing
LS
D000818:Animals; D037421:Anthozoa / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D013624:Taiwan
D004224:Diterpenes; C499877:junceellolide I