Discovery of GSK2795039, a Novel Small Molecule NADPH Oxidase 2 Inhibitor.

Aims: The NADPH oxidase (NOX) family of enzymes catalyzes the formation of reactive oxygen species (ROS). NOX enzymes not only have a key role in a variety of physiological processes but also contribute to oxidative stress in certain disease states. To date, while numerous small molecule inhibitors have been reported (in particular for NOX2), none have demonstrated inhibitory activity in vivo.

Total synthesis of antillatoxin.

The total synthesis of natural (4R,5R)-antillatoxin and its analog (4S,5S)-antillatoxin has been achieved; the optically pure key intermediates were prepared from indium mediated allylation of either primary or secondary allylic bromide with aldehyde in aquoues media, followed by highly selective Luche's reduction and chiral resolution.

Silicon-assisted propargylic transfer to aldehydes.

A new and efficient method of obtaining homopropargylic alcohols via homopropargylic transfer from the allenic alcohol to various aldehydes in the presence of Lewis acid catalysts is described; stereochemical studies have shown that this process is the first oxonium [3,3]-sigmatropic rearrangement of an allenic alcohol to a homopropargylic alcohol in the presence of aldehydes and Lewis acid.