The Haliclonacyclamines, Cytotoxic Tertiary Alkaloids from the Tropical Marine Sponge Haliclona sp.-Two new haliclonacyclamine metabolites, haliclonacyclamine C (III) and D (IV), are isolated. Their structures are deduced by various NMR experiments. Haliclonacyclamine C shows antibacterial and antifungal activity. The structures of haliclocyclamine A (I) and B (II) are revised by comparison to the new components, several NMR studies, X-ray analysis and derivatization. -(CLARK, R. J.; FIELD, K. L.; CHARAN, R. D.; GARSON, M. J.; BRERETON, I. M.; WILLIS, A. C.; Tetrahedron 54 (1998) 30, 8811-8826; Dep. Chem., Univ. Queensland, Brisbane, Queensl. 4072, Australia; EN)
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