Structures and Antimicrobial Activities of Pyridoacridine Alkaloids Isolated from Different Chromotypes of the Ascidian <italic>Cystodytes dellechiajei</italic>


Three new pentacyclic alkaloids were isolated from different chromotypes of the western Mediterranean ascidian Cystodytes dellechiajei. The purple color morph collected in Catalonia contained the known compounds kuanoniamine D (1), shermilamine B (2), N-deacetylkuanoniamine D (3), and styelsamine C (4) and a new alkaloid named N-deacetylshermilamine B (5… (More)


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