Dibromotyrosine Derivatives, a Maleimide, Aplysamine-2 and Other Constituents of the Marine Sponge Pseudoceratina purpurea

Dibromotyrosine Derivatives, a Maleimide, Aplysamine-2 and Other Constituents of the Marine Sponge Pseudoceratina purpurea Bromotyrosine Alkaloids from the Australian Marine Sponge Pseudoceratina verrucosa Aplysamine 6, an Alkaloidal Inhibitor of Isoprenylcysteine Carboxyl Methyltransferase from the Sponge <i>Pseudoceratina</i> sp. Aplysamine 6, an Alkaloidal Inhibitor of Isoprenylcysteine Carboxyl Methyltransferase from the Sponge Pseudoceratina sp. Bromotyrosine Alkaloids from the Sponge <i>Pseudoceratina verrucosa</i> Bromotyrosine Alkaloids from the Sponge Pseudoceratina verrucosa 20-<i>N</i>-Methylpurpuramine E: New Bromotyrosine-Derived Metabolite from Okinawan Marine Sponge <i>Pseudoceratina purpurea</i> Ceratinamides A and B: New antifouling dibromotyrosine derivatives from the marine sponge Pseudoceratina purpurea Purpuramines A-I, new bromotyrosine-derived metabolites from the marine sponge Psammaplysilla purpurea Two New Bromotyrosine Derivatives from the Marine Sponge Pseudoceratina sp.