New Polyketides from the Sponge Plakortis sp.

New Polyketides from the Sponge <i>Plakortis</i> sp. Plakortides M and N, Bioactive Polyketide Endoperoxides from the Caribbean Marine Sponge <i>Plakortis </i><i>h</i><i>alichondrioides</i> Spiculoic Acids A and B, New Polyketides Isolated from the Caribbean Marine Sponge <i>Plakortis </i><i>a</i><i>ngulospiculatus</i> Antiparasitic, Antineuroinflammatory, and Cytotoxic Polyketides from the Marine Sponge <i>Plakortis angulospiculatus</i> Collected in Brazil Four New C₁₆ 1,2-Dioxene-polyketides from the Sponge Plakortis aff. simplex Iso-, <i>Nor</i>-, and <i>Dinor</i>-Spiculoic Acids A, Polyketides from the Marine Sponge <i>Plakortis </i><i>z</i><i>yggompha</i> Cytotoxic Polyketide Derivatives from the South China Sea Sponge <i>Plakortis simplex</i> New Indole Alkaloids from the Sponge Plakortis sp. Plakinamine L: A New Steroidal Alkaloid from the Marine Sponge Corticium sp Novel marine sponge alkaloids. 1. Plakinidine A and B, anthelmintic active alkaloids from a Plakortis sponge