Novel pteridine alkaloids from the sponge Clathria sp.

Novel pteridine alkaloids from the sponge Clathria sp. Storniamides A-D: Alkaloids from a Patagonian sponge Cliona sp. Celenamide E, a Tripeptide Alkaloid from the Patagonian Sponge <i>Cliona chilensis</i> Celenamide E, a Tripeptide Alkaloid from the Patagonian Sponge Cliona chilensis The Structure of Clathrodin, a Novel Alkaloid Isolated from the Caribbean Sea Sponge Agelas clathrodes Clathculins A and B, Two Novel Nitrogen-Containing Metabolites from the Sponge <i>Clathrina aff. reticulum</i> Celenamides A and B, linear peptide alkaloids from the sponge Cliona celata Celenamides A and B, linear peptide alkaloids from the sponge Cliona celata Ptilomycalin D, a Polycyclic Guanidine Alkaloid from the Marine Sponge <i>Monanchora dianchora</i> A dimeric peptide alkaloid of a completely new type, Anchinopeptolide A, from the marine sponge Anchinoe tenacior