Echinosulfonic acid D: an ESI MS ⁿ evaluation of a new cytotoxic alkaloid from the New-Caledonian sponge Psammoclemma sp.

Echinosulfonic acid D: an ESI MS ⁿ evaluation of a new cytotoxic alkaloid from the New-Caledonian sponge Psammoclemma sp. Echinosulfonic Acids A−C and Echinosulfone A: Novel Bromoindole Sulfonic Acids and a Sulfone from a Southern Australian Marine Sponge, <i>Echinodictyum</i> Structure Revisions of the Sponge-Derived Dibrominated Bis-indole Alkaloids, Echinosulfone A and the Echinosulfonic Acids A to D Psammaplysenes C and D, Cytotoxic Alkaloids from <i>Psammoclemma</i> sp. Psammaplysenes C and D, Cytotoxic Alkaloids from <i>Psammoclemma</i> sp. Amphimedonoic acid and psammaplysene E, novel brominated alkaloids from Amphimedon sp. Bioactive Bromotyrosine-Derived Alkaloids from the Polynesian Sponge Suberea ianthelliformis (±)-Gelliusines A and B, Two Diastereomeric Brominated Tris-indole Alkaloids from a Deep Water New Caledonian Marine Sponge (Gellius or Orina sp.) Ecionines A and B, two new cytotoxic pyridoacridine alkaloids from the Australian marine sponge, Ecionemia geodides Psammopemmins (A-C), Novel Brominated 4-Hydroxyindole Alkaloids From an Antarctic Sponge, Psammopemma sp.