
%0 Journal Article
%A Poiner, A 
%A Taylor, WC 
%T The Constituents of Marine Sponges. IV. The Isolation of Degraded Spongian Diterpenoids From <I>Aplysilla tango</I> (sp. nov.) (Dendroceratida)
%J Australian Journal of Chemistry
%D 1990/10/01
%V 43
%N 10
%P 1713-1727
%K 
%R https://doi.org/10.1071/CH9901713
%U https://www.publish.csiro.au/paper/CH9901713 
%X From the orange encrusting marine sponge Aplysilla tango (sp. nov .) five degraded spongian  diterpenes were isolated: gracilin A, aplytandiene-1, aplytandiene-2, aplytangene-1 and aplytangene-2. Gracilin A was confirmed by spectroscopic methods to be (4Z, 1R*, 1&#8242;S*, 3S*, 3aR*, 7aR*)-4-ethylidene-5-(1&#8242;,3&#8242;,3&#8242;-trimethylcyclohexyl)-1,3,3a,4,7,7a- hexahydroisobenzofuran-1,3-diyl diacetate (31, and related diterpenes aplytandiene-1 and -2 were confirmed to be (4) and (5) respectively. Aplytangene-1 was shown to be (1&#8242;Z, 1R*, 1&#8243;S*, 5S*,6R*, 8R*)-8-[1&#8242;-ethenyl-2&#8242;-(1&#8242;,3&#8243;,3&#8243;-trimethoxycyclohexyl) ethenyl ]-3-oxo-2,7-dioxabicyclo [3.2.1]oct-6-yl acetate (6) and aplytangene-2 to be methyl (4E, 1&#8242;S*, 3R*, 3aR*, 5R*,6aS*)-5-methyl-2-oxo-4-(1&#8242;,3&#8242;,3&#8242;-trimethylcyclohexylmethylene ) hexahydrofuro [2,3-b]furan-3-acetate (7). A steroid fraction was also isolated. 
