Alkaloid originally isolated from Haliclona sp., a marine sponge found in Papua, New Guinea. Exhibits antifungal and antimicrobial activity. Isoln and characterization: B. J. Baker et al., J. Am. Chem. Soc. 110, 965 (1988). Total synthesis: R. M. Borzilleri et al., ibid. 116, 9789 (1994).