Plakoridine C, a novel piperidine alkaloid from an Okinawan marine sponge Plakortis sp.

Plakoridine C, a novel piperidine alkaloid from an Okinawan marine sponge Plakortis sp. Novel marine sponge alkaloids. 1. Plakinidine A and B, anthelmintic active alkaloids from a Plakortis sponge Novel marine sponge alkaloids. 1. Plakinidine A and B, anthelmintic active alkaloids from a Plakortis sponge Platisidines A-C, N-Methylpyridinium Alkaloids from an Okinawan Marine Sponge of Plakortis Species Plakinamine L: A New Steroidal Alkaloid from the Marine Sponge Corticium sp Plakinidines: Cytotoxic alkaloid pigments from the fijian sponge plakortis sp. New Indole Alkaloids from the Sponge Plakortis sp. New Constituents from the Korean Sponge Plakortis simplex Pyrinodemin A, a cytotoxic pyridine alkaloid with an isoxazolidine moiety from sponge Amphimedon sp Plakinamine M, a Steroidal Alkaloid from the Marine Sponge Corticium sp.