Elucidation of Spirodactylone, a Polycyclic Alkaloid from the Sponge Dactylia sp., and Nonenzymatic Generation from the Co-metabolite Denigrin B

Elucidation of Spirodactylone, a Polycyclic Alkaloid from the Sponge Dactylia sp., and Nonenzymatic Generation from the Co-metabolite Denigrin B Denigrins and Dactylpyrroles, Arylpyrrole Alkaloids from a <i>Dactylia</i> sp. Marine Sponge Denigrins H–L: Sulfated Derivatives of Denigrins D and E from a New Zealand Dictyodendrilla c.f. dendyi Marine Sponge Dendridine A, a Bis-indole Alkaloid from a Marine Sponge <i>Dictyodendrilla</i> Species Dendridine A, a Bis-indole Alkaloid from a Marine Sponge Dictyodendrilla Species Lihouidine, a Novel Spiro Polycyclic Aromatic Alkaloid from the Marine Sponge Suberea n. sp. (Aplysinellidae, Verongida) Pyrinodemin A, a cytotoxic pyridine alkaloid with an isoxazolidine moiety from sponge Amphimedon sp Amino Acid Derivatives from the Marine Sponge Jaspis digonoxea Amino Acid Derivatives from the Marine Sponge Jaspis digonoxea Axinellin A and B: Two New Pyrrolactam Alkaloids from Axinella sp.