The majority of xanthones reported from fungi, bacteria, and lichens, and particularly those reported relatively early on, have a monomeric and fully aromatized structure. These include arthothelin, asemone, asperxanthone, austocystins, bikaverin, chaetoxanthones, chodatin, conioxanthone A, erythrommone, emericellin, globosuxanthones C and D, griseoxanthone C, lichexanthones and norlichexanthones, Microsphaeropsis xanthones, mycoxanthone, Phoma and Phomopsis xanthones, pinselin and pinselic acid, sterigmatocystins, tajixanthone, thiomelin, thiophanic acid, thiophaninic acid, thuringione, umbilicaxanthones, vinetorin, varixanthone, vertixanthone, and Wardomyces and Xylaria xanthones.Arthothelin. Santesson reported observing this compound in the mass-spectral analysis of the lichen Leconora reuteri. 65 Arthothelin (2,4,5-trichloronorlichexanthone, 19, Figure 2) has

Covering: up to 2014. Xanthone dimers are a widespread, structurally-diverse family of natural products frequently found in plants, fungi and lichens. They feature an intriguing variety of linkages between the component xanthones (benzannulated chromanones). These synthetically elusive secondary metabolites are of great interest due to their broad array of bioactivities, which has led to the xanthones being designated as 'privileged structures'. We seek herein to give an overview of all reliably-described xanthone dimers, their structures, occurrence, and the bioactivities established to date. The possible biosynthetic pathways leading to members of this family are also discussed in light of our current knowledge.

Mehrphotonen‐Fabrikation ermöglicht die Herstellung von komplexen dreidimensionalen Strukturen mit charakteristischen Mustern in der Größenordnung 100 nm oder darunter aus einer Bandbreite unterschiedlicher Materialien. In ihrem Aufsatz auf S. 6352 ff. diskutieren J. T. Fourkas et al. die Entwicklung dieser Technik seit ihrer Einführung vor rund zehn Jahren sowie die verwendeten Materialien, Methoden und Anwendungen zum Aufbau funktioneller Bauelemente.

Traditional methods are ill‐suited for the synthesis of ortho,ortho‐biphenols, a structural motif found in many polyphenolic natural products, as well as synthetically useful compounds such as the chiral ligands binol, vapol, and vanol. The new route consists of a radical‐based reaction of an acetal‐tethered biphenyl ether substrate and subsequent hydrolytic cleavage of the dibenzo‐1,3‐dioxepine intermediate.

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