TY - JOUR A1 - Calcul, Laurent A1 - Tenney, Karen A1 - Ratnam, Joseline A1 - McKerrow, James H. A1 - Crews, Phillip T1 - Corrigendum to: Structural Variations to the 9-N-Methyladeninium Diterpenoid Hybrid Commonly Isolated from Agelas Sponges JF - Australian Journal of Chemistry JO - Aust. J. Chem. Y1 - 2011 VL - 64 IS - 6 SP - 846 EP - 846 KW - UR - https://doi.org/10.1071/CH10036_CO N2 - Four novel 9-N-methyladeninium diterpenoids, agelasine M (3), 2-oxo-agelasine B (4), gelasine A (5), and gelasine B (6) accompanied by the known-agelasine B (1) and F (2) were isolated from the marine sponge Agelas sp. collected in Papua New Guinea. Compounds 3–6 represent higher unsaturated 9-N-methyladeninium bicyclic diterpenoid derivatives including 5 and 6 as unusual norditerpenoid-agelasines. Their structures were elucidated through detailed physical data analyses and comparison with literature properties. All pure compounds were evaluated for inhibitory activity against Trypanosoma brucei as well as for cytotoxicity against Jurkat cells. ER -