Alkaloids from the antarctic sponge Kirkpatrickia varialosa.

Alkaloids from the antarctic sponge Kirkpatrickia varialosa. Variolins and Related Alkaloids Three Novel, Structurally Unique Spirocyclic Alkaloids from the Halotolerant B‐17 Fungal Strain of Aspergillus variecolor Four New Bioactive Pyrrole-Derived Alkaloids from the Marine Sponge <i>Axinella</i> <i>b</i><i>revistyla</i> Pyrinodemins B-D, Potent Cytotoxic bis-Pyridine Alkaloids from Marine 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. Pyrinadine A, a novel pyridine alkaloid with an azoxy moiety from sponge Cribrochalina sp. Pyrinadines B–G, new bis-pyridine alkaloids with an azoxy moiety from sponge Cribrochalina sp. Variabines A and B: new β-carboline alkaloids from the marine sponge Luffariella variabilis