Marine organisms Eudistoma

Eudistones A and B were obtained from an undetermined species of Eudistoma from the Seychelles Islands. Tintamine, shermilamine E and cydoshermil-amine D are three sulfur-containing pyridoacridines. These new alkaloids were extracted from Cystodytes viola-tinctus, whose specific name refers to the animal s color and whose origin is the lagoon of Mayotte. Tintamine is the first example of a pyridoacridine associated with a tropolone and shermilamine E is a rare example of an N-oxide derivative isolated from a marine organism. 

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