Polycitone B and Prepolycitrin A:  Two Novel Alkaloids from the Marine Ascidian Polycitor africanus

Polycitone B and Prepolycitrin A:  Two Novel Alkaloids from the Marine Ascidian <i>Polycitor africanus</i> Polycitone A and Polycitrins A and B: New Alkaloids from the Marine Ascidian Polycitor sp Polycitorols A and B, New Tricyclic Alkaloids from an Ascidian Iheyamines, new cytotoxic bisindole pigments from a colonial ascidian, Polycitorella sp. New Cytotoxic 1,2,4-Thiadiazole Alkaloids from the Ascidian Polycarpa aurata Varacin and Three New Marine Antimicrobial Polysulfides from the Far-Eastern Ascidian Polycitorsp. Varacin and Three New Marine Antimicrobial Polysulfides from the Far-Eastern Ascidian Polycitorsp. Three new sulfur-containing alkaloids, polycarpaurines A, B, and C, from an Indonesian ascidian Polycarpa aurata Three new sulfur-containing alkaloids, polycarpaurines A, B, and C, from an Indonesian ascidian Polycarpa aurata Polycarpine dihydrochloride: A cytotoxic dimeric disulfide alkaloid from the indian ocean ascidian Polycarpa clavata