New Indole Alkaloids from the Sponge Plakortis sp.

New Indole Alkaloids from the Sponge Plakortis sp. Three New Cytotoxic Metabolites from the Marine Sponge Plakortis halichondrioides Cytotoxic 5-Hydroxyindole Alkaloids from the Marine SpongeScalarispongiasp. Cytotoxic Bisindole Alkaloids from a Marine Sponge <i>Spongosorites</i> sp. Minor Steroidal Alkaloids from the Marine Sponge <i>Corticium</i> sp. Minor Steroidal Alkaloids from the Marine Sponge Corticium sp. New Bis(Indole) Alkaloids of the Topsentin Class from the Sponge <i>Spongosorites genitrix</i> New Bis(Indole) Alkaloids of the Topsentin Class from the Sponge Spongosorites genitrix New Steroidal Alkaloids from an Undescribed Sponge of the Genus <i>Corticium</i> Novel marine sponge alkaloids. 1. Plakinidine A and B, anthelmintic active alkaloids from a Plakortis sponge