Pyrinodemin A, a cytotoxic pyridine alkaloid with an isoxazolidine moiety from sponge Amphimedon sp

Pyrinodemin A, a cytotoxic pyridine alkaloid with an isoxazolidine moiety from sponge Amphimedon sp Pyrinodemins B-D, Potent Cytotoxic bis-Pyridine Alkaloids from Marine Sponge Amphimedon sp. Pyrinodemins B-D, Potent Cytotoxic bis-Pyridine Alkaloids from Marine Sponge Amphimedon sp. Pyrinodemins E and F, new 3-alkylpyridine alkaloids from sponge Amphimedon sp. Pyrinodemins G–I, new bis-3-alkylpyridine alkaloids from a marine sponge Amphimedon sp. Nakinadine A, a novel bis-pyridine alkaloid with a β-amino acid moiety from sponge Amphimedon sp. Pyrinadine A, a novel pyridine alkaloid with an azoxy moiety from sponge Cribrochalina sp. Nakinadines B–F: new pyridine alkaloids with a β-amino acid moiety from sponge Amphimedon sp. Pyrinadines B–G, new bis-pyridine alkaloids with an azoxy moiety from sponge Cribrochalina sp. Hachijodines A−G:  Seven New Cytotoxic 3-Alkylpyridine Alkaloids from Two Marine Sponges of the Genera <i>Xestospongia </i>and <i>Amphimedon</i>