10.1021/np900016h.s002 Daniel Anthony Dias Daniel Anthony Dias David James Goble David James Goble Claudio Andres Silva Claudio Andres Silva Sylvia Urban Sylvia Urban Phenylphenalenones from the Australian Plant <i>Haemodorum simplex</i> American Chemical Society 2009 chemical shift reassignments 2 D NMR characterization Australian Plant Haemodorum simplexChemical investigation Australian plant Haemodorum simplex dilatrin compound phenylphenalenone isolation cytotoxic activity 2009-06-26 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Phenylphenalenones_from_the_Australian_Plant_i_Haemodorum_simplex_i_/2847454 Chemical investigation of the Australian plant <i>Haemodorum simplex</i> resulted in the isolation of three new phenylphenalenones, haemodorone (<b>10</b>), haemodorol (<b>11</b>), and haemodorose (<b>12</b>), together with the previously reported compounds <b>5</b>, dilatrin (<b>6</b>), and xiphidone (<b>8</b>). The first complete 2D NMR characterization for all of the compounds isolated, including several chemical shift reassignments for dilatrin (<b>6</b>), is reported. In addition this is one of the few reports to discuss the isolation of new phenylphenalenones from an Australian medicinal plant. The crude extract of both the bulbaceous and aerial components of the plant exhibited varying degrees of antibacterial, antifungal, and antiviral activity, and only the bulbs displayed potent cytotoxic activity.