Keramadine, a novel antagonist of serotonergic receptors isolated from the okinawan sea sponge sp.

Keramadine, a novel antagonist of serotonergic receptors isolated from the okinawan sea sponge sp. Bromopyrrole Alkaloids from a Marine Sponge &lt;i&gt;Agelas&lt;/i&gt; sp. Keramamine-A and -B, novel antimicrobial alkaloids from the Okinawan marine sponge sp. Keramaphidin C and keramamine C plausible biogenetic precursors of manzamine C from an Okinawan marine sponge Keramaphidin B, a novel pentacyclic alkaloid from a marine sponge Amphimedon sp. : A plausible biogenetic precursor of manzamine alkaloids Ceratinadins A–C, new bromotyrosine alkaloids from an Okinawan marine sponge Pseudoceratina sp. Nagelamides A−H, New Dimeric Bromopyrrole Alkaloids from Marine Sponge <i>Agelas</i> Species Nagelamides A−H, New Dimeric Bromopyrrole Alkaloids from Marine Sponge <i>Agelas</i> Species Seragadine A, a α-Carboline Alkaloid from Marine Sponge Tyrokeradines A and B, new bromotyrosine alkaloids with an imidazolyl-quinolinone moiety from a Verongid sponge