Pyraxinine, a Novel Nitrogenous Compound from the Marine Sponge Cymbastela cantharella

Pyraxinine, a Novel Nitrogenous Compound from the Marine Sponge Cymbastela cantharella Pyraxinine, a Novel Nitrogenous Compound from the Marine Sponge <i>Cymbastela cantharella</i> Dihydrohymenialdisines, new pyrrole-2-aminoimidazole alkaloids from the marine sponge Cymbastela cantharella Pyrinadine A, a novel pyridine alkaloid with an azoxy moiety from sponge Cribrochalina sp. Axinellamide, a new alkaloid from the marine sponge Axinella sp. Axinellamide, a new alkaloid from the marine sponge Axinella sp. Axinellamide, a new alkaloid from the marine sponge axinella sp. Axinellin A and B: Two New Pyrrolactam Alkaloids from Axinella sp. Pyrinodemin A, a cytotoxic pyridine alkaloid with an isoxazolidine moiety from sponge Amphimedon sp Pyrinadines B–G, new bis-pyridine alkaloids with an azoxy moiety from sponge Cribrochalina sp.