1. New steroid alkaloids from Chonemorpha macrophylla;Banerji;Indian Journal of Chemistry,1973
2. Crellastatin A: a cytotoxic bis-steroid sulfate from the Vanuatu marine sponge Crella sp;D'Auria;Journal of Organic Chemistry,1998
3. Hamigerols A and B, unprecedented polysulfate sterol dimers from the Mediterranean Sponge Hamigera hamigera;Cheng;Journal of Natural Porducts,2007
4. Ritterazine A, a highly cytotoxic dimeric steroidal alkaloid, from the Tunicate Ritterella tokioka;Fuzukawa;Journal of Organic Chemistry,1994
5. Isolation and structure elucidation of ritterazines B and C, highly cytotoxic dimeric steroidal alkaloids, from the tunicate Ritterella tokioka;Fuzukawa;Journal of Organic Chemistry,1995a