Crambines C1 and C2: Two Further Ichthyotoxic Guanidine Alkaloids from the Sponge Crambe crambe

Crambines C1 and C2: Two Further Ichthyotoxic Guanidine Alkaloids from the Sponge Crambe crambe Crambines C1 and C2: Two Further Ichthyotoxic Guanidine Alkaloids from the Sponge Crambe crambe Two new guanidine alkaloids from the mediterranean sponge crambe crambe. Additional bioactive guanidine alkaloids from the Mediterranean sponge Crambe crambe Polycyclic Guanidine Alkaloids from the Marine Sponge Crambe crambe and Ca⁺⁺ Channel Blocker Activity of Crambescidin 816 Polycyclic Guanidine Alkaloids from the Marine Sponge Crambe crambe and Ca⁺⁺ Channel Blocker Activity of Crambescidin 816 Crambescidins: new antiviral and cytotoxic compounds from the sponge Crambe crambe Crambain, a new alkaloid from plants of the genus Crambe Crambescidin 826 and Dehydrocrambine A:  New Polycyclic Guanidine Alkaloids from the Marine Sponge <i>Monanchora </i>sp. that Inhibit HIV-1 Fusion Polycyclic guanidine-containing compounds from the Mediterranean sponge Crambe crambe: the structure of 13,14,15-isocrambescidin 800 and the absolute stereochemistry of the pentacyclic guanidine moieties of the crambescidins