
%0 Journal Article
%A Bowden, BF 
%A Coll, JC 
%A Konig, GM 
%T Studies of Australian Soft Corals. XLVIII. New Briaran Diterpenoids From the Gorgonian Coral <I>Junceela gemmacea</I>
%J Australian Journal of Chemistry
%D 1990/01/01
%V 43
%N 1
%P 151-159
%K 
%R https://doi.org/10.1071/CH9900151
%U https://www.publish.csiro.au/paper/CH9900151 
%X The structures of three new briaran based diterpenes are reported from the gorgonian coral Junceela gemmacea. Their structures were deduced on the basis of extensive one- and two-dimensional high-field n.m.r. experiments. The metabolites were (1R,2R,5Z,7R,8S,9R,10R,11R,14R,17S)-2,14-diacetoxy-8,17:11,20-bisepoxy-9-hydroxybriar-5-en-18-one (3), (1R,2R,5Z,7R,8S,9R,10R,11Z,14R,17S)-2,14-diacetoxy-8,17-epoxy-9-hydroxybriara-5,11-dien-18-one (4), and 1R,2R,5Z,7R,8S,9R,10R,12R,14R,17S)-2,14-diacetoxy-8,17-epoxy- 9,12-dihydroxybriara-5,11(20)-dien-18-one (5). The compounds are closely related to recently reported metabolites from Briareum species of soft corals. 
