Three New Antibacterial Alkaloids from a Marine Sponge Stelletta Species

Three New Antibacterial Alkaloids from a Marine Sponge <i>Stelletta</i> Species Stellettahide a, an antifungal alkaloid from a marine sponge of the genus stelletta Stellettazole A: An antibacterial guanidinoimidazole alkaloid from a marine sponge Stelletta sp. Stellettamide B, a New Indolizidine Alkaloid from a Sponge of the Genus <i>Stelletta</i> Stellettamide B, a New Indolizidine Alkaloid from a Sponge of the Genus <i>Stelletta</i> Bistellettadines A and B:  Two Bioactive Dimeric Stellettadines from a Marine Sponge <i>Stelletta</i> sp.¹ Stellettazole D, a Cytotoxic Imidazole Alkaloid from the Marine Sponge Jaspis duoaster Isolation and Identification of Secondary Metabolite from Marine Sponge Callyspongia sp. and its Antibacterial Potency New Acetylenic Acids from a Sponge of the Genus <i>Stelletta</i> Stellettins L and M, Cytotoxic Isomalabaricane-Type Triterpenes, and Sterols from the Marine Sponge Stelletta tenuis