Madaio, A., Piccialli, V., Sica, D., and Corriero, G. 1989. New polyhydrozysterols from the dictyoceratid sponges Hippospongia communis, Spongia officinalis, Ircinia variabilis, and Spongionella gracilis. J. Nat. Prod. 52:952-961. |
|
Piccialli, V., and Sica, D. 1987. Four new trihydroxylated sterols from the sponge Spongionella gracilis. J. Nat. Prod. 50:915-920. |
|
Piccialli, V., and Sica, D. 1986. New dihydroxylated sterols from the marine sponge Spongionella gracilis. J. Nat. Prod. 49:779-783. |
|