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Rogers, R. W. & Guymer, G. P.: Lichen collections in Brisbane, Queensland, Australia. – Taxon42: 719–721. 1993. – ISSN 0040‐0262. The lichen collection from the University of Queensland Herbarium (BRIU) has been consolidated with that in the Queensland Herbarium (BRI). The collection numbers over 20,000 packages, and is rich in tropical and subtropical material. Types collected by Shirley and Bailey and described by Stirton, Müller Argoviensis, and Shirley are to be found in the collection.

Sideroxylonal C (3), a new phloroglucinol dimer, was isolated from the flowers of Eucalyptus albens through bioassay-guided fractionation. The structure elucidation was based on 1D and 2D NMR experiments, MS analysis, and comparison with sideroxylonals A (1) and B (2). Sideroxylonal C inhibited human plasminogen activator inhibitor type-1 at 4.7 μM without any significant effect on human tissue plasminogen activator.

Chemical investigation of the Australian rainforest plant Doryphora sassafras has resulted in the isolation of a new natural product, 2-methyl-1-(p-methoxybenzyl)-6,7-methylenedioxyisoquinolinium chloride (1). The iodide salt of compound 1 has previously been synthesized but only partially characterized. This paper reports the full spectroscopic characterization of 1 by MS, IR, UV, and NMR data.

Triunia erythrocarpa was identified as containing alkaloids during chemical screening of Queensland Proteaceae using Dragendorff's reagent. A new tropane, 10-hydroxydarlingine (1), and the known tropane, darlingine (2), were isolated from the leaves of T. erythrocarpa. The absolute stereochemistry of 10-hydroxydarlingine (1) was assigned using the advanced Mosher method. T. erythrocarpa is only the seventh member of the Proteaceae to have been shown to produce alkaloids.