Prianosin A, a novel antileukemic alkaloid from the okinawan marine sponge Prianos melanos

Prianosin A, a novel antileukemic alkaloid from the okinawan marine sponge Prianos melanos Theonelladins A ∼ D, novel antineoplastic pyridine alkaloids from the Okinawan marine sponge Niphatesines A–D, new antineoplastic pyridine alkaloids from the okinawan marine sponge Niphates sp. Pyrinadine A, a novel pyridine alkaloid with an azoxy moiety from sponge Cribrochalina sp. Agelasine G, a New Antileukemic Alkaloid from the Okinawan Marine Sponge Agelas sp. Purealidin A, a new cytotoxic bromotyrosine-derived alkaloid from the Okinawan marine spongePsammaplysilla purea Pyrinodemin A, a cytotoxic pyridine alkaloid with an isoxazolidine moiety from sponge Amphimedon sp Nakinadine A, a novel bis-pyridine alkaloid with a β-amino acid moiety from sponge Amphimedon sp. Aplysillamides A and B, new antimicrobial guanidine alkaloids from the Okinawan marine sponge Psammaplysilla purea Hyrtiosins A and B, new indole alkaloids from the Okinawan marine sponge Hyrtios erecta