Two New Tryptophan-Derived Alkaloids from the Okinawan Marine Sponge Aplysina Sp.

Two New Tryptophan-Derived Alkaloids from the Okinawan Marine Sponge Aplysina Sp. Two New Tryptophan-Derived Alkaloids from the Okinawan Marine Sponge Aplysina Sp. Bromoisoxazoline Alkaloids from the Caribbean Sponge Aplysina insularis The Structures of Aplysinamisines I, II, and III: New Bromotyrosine-Derived Alkaloids from the Caribbean Sponge Aplysina cauliformis The Structures of Aplysinamisines I, II, and III: New Bromotyrosine-Derived Alkaloids from the Caribbean Sponge Aplysina cauliformis Spongiacidins A−D, New Bromopyrrole Alkaloids from <i>Hymeniacidon</i> Sponge Aplyzanzine A, a New Dibromotyrosine Derivative from a Verongida Sponge Hyrtiosins A and B, new indole alkaloids from the Okinawan marine sponge Hyrtios erecta Lipopurealins D and E and Purealidin H, New Bromotyrosine Alkaloids from the Okinawan Marine Sponge Psammaplysilla purea Aplysillamides A and B, new antimicrobial guanidine alkaloids from the Okinawan marine sponge Psammaplysilla purea