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. |
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Piccialli, V., and Sica, D. 1987. Four new trihydroxylated sterols from the sponge Spongionella gracilis. J. Nat. Prod. 50:915-920. |
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Mayol, L., Piccialli, V, and Sica, D. 1986. Minor bisnorditerpenes from the marine sponge Spongionella gracilis and revision of the ?6 configuration of gracilin B. J. Nat. Prod. 49:823-828. |
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Piccialli, V., and Sica, D. 1986. New dihydroxylated sterols from the marine sponge Spongionella gracilis. J. Nat. Prod. 49:779-783. |
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Mayol, L., Piccialli, V, and Sica, D. 1985b. Application of 2D-nmr spectroscopy in the structural determination of gracilin B, a bis-nor-diterpene from the sponge Spongionella gracilis. Tetrahedron Lett. 26:1253-1256. |
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Mayol, L., Piccialli, V, and Sica, D. 1985a. Gracilin A, an unique nor-diterpene metabolite from the marine sponge. Tetrahedron Lett. 26:1357-1360. |
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Sica, D., and Piccialli, V. 1985. A new C30 sterol, (24Z)-24-propylcholesta-5,7,24(28)-trien-3ß-ol, and other ?5,7 sterols from the sponge Spongionella gracilis. Comp. Biochem. Physiol. B. 81:115-118. |
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