1. TerraMarine Pharmaceuticals, Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand, Malaghan Institute of Medical Research, P.O. Box 7060, Wellington South, New Zealand, New Zealand Institute for Crop & Food Research Ltd., Chemistry Department, University of Otago, P.O. Box 56, Dunedin, New Zealand, National Institute of Water & Atmospheric Research (NIWA) Ltd., Private Bag 14-901, Kilbirnie, Wellington, New Zealand, and NIWA, P.O. Box 893, Nelson, New Zealand