title: Madangamines B-E, Pentacyclic Alkaloids from the Marine Sponge Xestospongia ingens
abstract: Four new pentacyclic alkaloids, madangamines B-E (3-6), have been isolated from the marine sponge Xestospongia ingens collected in Papua New Guinea.
authors.affiliation: Departments of Chemistry and Oceanography-Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1.
authors.initials: F
authors.lastname: Kong
authors.initials: EI
authors.lastname: Graziani
authors.initials: RJ
authors.lastname: Andersen