Bioactivity of Spongian Diterpenoid Scaffolds from the Antarctic Sponge <i>Dendrilla antarctica</i> oleh Alexandre Bory, Andrew J. Shilling, Jessie Allen, Ala Azhari, Alison Roth, Lindsey N. Shaw, Dennis E. Kyle, John H. Adams, Charles D. Amsler, James B. McClintock, Bill J. Baker