The dibenzylidene derivative of glucose phenylosotriazole

The dibenzylidene derivative (m.p. 141°) of D-glucose phenylosotriazole is shown by degradative and p.m.r. evidence to have a 3,4:5,6-di-O- benzylidene structure with two five-membered dioxolan rings. The compound has the R configuration at both acetal carbon atoms

New non-contiguous polypropiontes from marine mollusks: A comment on their natural product status

The structure of the rearranged polypropionate ester siserrone A (8), isolated from Siphonaria serrata, was investigated by standard spectroscopic methods and the relative stereochemistry determined by ROESY spectroscopy and chemical degradation studies. Base-catalysed rearrangement of denticulatin A (13) yields the polypropionate ester (16) while careful work-up of S. baconi yields the siphonarins, but not the baconipyrones, as earlier reported. The natural product status of polypropionate ester metabolites is discussed

An Urban Forest Horizon Scan in Canberra, Australia. Report for the Clean Air and Urban Landscapes Hub

In attempting to glimpse the possible futures for the urban forest, insights can be gained into key current policy and research needs that will better prepare the urban forest, and its managers and users, for these future scenarios. The horizon scanning workshop provided the forum and opportunity for researchers and policy makers from a range of backgrounds to come together and for one day imagine scenarios for future forests. These discussions generated new conceptions of future cities and the roles of the urban forests within them. Discussions pointed to both opportunities and threats for urban forests, associated with technological developments, increasing climate change impacts, globalisation and population growth. These scenarios could be further developed to identify key research and policy priorities that can better prepare our cities to capitalise on the opportunities and manage the threats. The workshop also opened possibilities for increased transdisciplinary collaborations between workshop participants and their colleagues