Ruthenium tetroxide (1 mol%) has been used as a catalyst for the oxidative mono-cyclization of 1,5,9-trienes and polyenes. The poly-unsaturated substrates underwent mono-cyclization with a high degree of diastereo- and positionselectivity to produce mono-tetrahydrofuran diols with a varying degree of unsaturation. Up to four new stereogenic centers were created in this single step transformatio...

10.2217/14750708.4.2.125 © 2 Invasive fungal infections continue to be associated with high rates of morbidity and mortality, primarily in the immunocompromised hosts. Candida and Aspergillus are the most common causes of invasive fungal disease; however, other fungi can also cause disease in humans. Current therapeutic options for the management of invasive fungal infections include the polyen...

The conjugated polyenes 10, 11, and 17 respectively, with 9anthryland 2-tetraphenylporphyrinyl (TPP) terminal groups and a bicyclooctane unit incorporated into the polyene chain were synthesized by Wittig olefinations. In all cases it was possible to obtain the all-(4 compounds from the (Q/(Z)-isomeric mixtures by chromatographic purification and several recrystallizations. From the UV/Vis spec...

Dental Update – May 2000 165 Abstract: As both humans and fungi are eukaryotic organisms, antifungal agents affect their cellular metabolism. Thus, a relatively few antifungals with minimal toxicity and side-efects are available compared with a plethora of antibacterials. These agents currently prescribed in dentistry belong to two major groups, the polyenes (nystatin and amphotericin B) and th...