Spongionella gracilis

Mayol, L., Piccialli, V., and Sica, D., Gracilin A, a unique nor-diterpene metabolite from the marine sponge Spongionella gracilis, Tetrahedron, 26, 1357, 1985. 

Constit. of Spongionella gracilis. Cryst. (MeOH/pet. ether). Mp 184-186°. 

Mayol, L., V. Piccialli, and D. Sica Gracilin A, an Unique Aor-Diterpene Metabolite from the Marine Sponge Spongionella gracilis. Tetrahedron Lett. 26, 1357 (1985). 

Madaio, A., Piccialli, V., Sica, D., and Corriero, G. (1989) New polyhydroxysterols from the Dictyoceratid sponges Hippospongia communis, Spongia officinalis, Ircinia variabilis and Spongionella gracilis.]. Nat. Prod., 52, 952-961. 

Mayol, L., Picciali, V, and Sica, D. (1987b) Spongiolactone, an tmusual P-lactone diterpene isovalerate based on a new rearranged spongiane skeleton from Spongionella gracilis. Tetrahedron Lett., 28, 3601-3604. 

Mayol, L Picciali, V and Sica, D, (1986) Metabolites from sponge Spongionella gracilis. Three further nor-diterpenes one of them based on a novel carbocyclic skeleton. Tetrahedron. 42, 5369-5376,... 

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