Pachychalines A–C: Novel 3‐Alkylpyridinium Salts from the Marine Sponge Pachychalina sp.

Pachychalines A–C: Novel 3‐Alkylpyridinium Salts from the Marine Sponge Pachychalina sp. The first cyclic monomeric 3-alkylpyridinium alkaloid from natural sources: identification, synthesis, and biological activity 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. 3-Alkylpyridinium Alkaloids from the Pacific Sponge <i>Haliclona</i> sp. 3-Alkylpyridinium Alkaloids from the Pacific Sponge <i>Haliclona</i> sp. Haliclocyclin C, a New Monomeric 3-Alkyl Pyridinium Alkaloid from the Arctic Marine Sponge Haliclona viscosa Haliclocyclin C, a New Monomeric 3-Alkyl Pyridinium Alkaloid from the Arctic Marine Sponge Haliclona viscosa Hachijodines A−G:  Seven New Cytotoxic 3-Alkylpyridine Alkaloids from Two Marine Sponges of the Genera <i>Xestospongia </i>and <i>Amphimedon</i> Hachijodines A−G:  Seven New Cytotoxic 3-Alkylpyridine Alkaloids from Two Marine Sponges of the Genera <i>Xestospongia </i>and <i>Amphimedon</i>