Gold-rhenium complexes

Propylene oxide is also produced in Hquid-phase homogeneous oxidation reactions using various molybdenum-containing catalysts (209,210), cuprous oxide (211), rhenium compounds (212), or an organomonovalent gold(I) complex (213). Whereas gas-phase oxidation of propylene on silver catalysts results primarily in propylene oxide, water, and carbon dioxide as products, the Hquid-phase oxidation of propylene results in an array of oxidation products, such as propylene oxide, acrolein, propylene glycol, acetone, acetaldehyde, and others. 

In this field of luminescent organometallic probes, rhenium and iridium complexes have played so far the major role, thus explaining their predominance in this chapter. The lower number of platinum, rhodium, and gold fluorescent complexes could be explained by demanding synthesis, low luminescence efficiency, poor operational stability, unsuitability for biological applications, or even simply by the lack of systematic studies. 

FjO ReSC6, Rhenium(I), pentacarbonyl-(trifluoromethanesulfonato)-, 26 115 FjP, Phosphorus trifluoride, 26 12 F4AuiBOP,C54H45, Gold(l +), p,-oxo-[tris[(triphenylphosphine)-tetrafluoroborate(l -), 26 326 F4B, Borate(l-), tetrafluoro-molybdenum and tungsten complexes, 26 96-105... 

Kirlin, P. S., DeThomas, F. A., Bailey, J. W., Gold, H. S., Dybowski, C., and Gates, B. C., Molecular oxide-supported rhenium carbonyl complexes Synthesis and characterization by vibrational spectroscopy. J. Phys. Chem. 90, 4882 (1986). 

Cat B is an abundant and ubiquitously expressed cysteine peptidase of the papain family and makes up a major fraction of lysosomal enzymes that is capable of degrading components of the extracellular matrix in various diseases [30-32]. Cat B is also a prognostic marker for several types of cancer [33], and increased expression and secretion of cat B has been shown to be involved in the migration and invasion of various tumours [34—36], The precise role of cat B in solid tumours is not fully understood, but it has been proposed to participate, along with other cysteine cathepsins, in metastasis, angiogenesis, and tumour progression [37], Indeed, cat B inhibitors reduce both tumour cell motility and invasiveness in vitro [38], Recently, metal complexes based on rhenium, gold and palladium were shown to be effective inhibitors of cat B [39-44],... 

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