G. Guella, P. Amade, F. Pietra
May 7, 1986
Citations
0
Influential Citations
18
Citations
Journal
Helvetica Chimica Acta
Abstract
The sponge Cacospongia scalaris (family Thorectidae), collected at the Cap de Nice (Cǒte d'Azur), is shown to contain a series of truncated, linear C21 difuran terpenoids comprising the known sponge products furospongin-1 ((+)-1), furospongin-2 (2), and dihydrofurospongin-2 ((−)-(E)-3), besides the new products cacospongione A ((−)-4), cacospongienone A ((−)-(Z)-6), and cacospongienone B ((−)-(E)-6), whose absolute configurations have been assigned by chemical correlations with (+)-1. Possibly, one of the two cacospongienones is an artifact, as these two terpenoids interconvert on standing. This is the first finding of linear C21 difuran terpenoids, which are typical of the Spongiidae, in a member of the family Thorectidae.