The present invention is directed to compounds of the formula
wherein all substituents are defined herein, as well as pharmaceutically acceptable compositions comprising compounds of the invention and methods of using said compositions in the treatment of various disorders.
Stereochemical aspects of catalytic siloxymethylation of various oxygen-containing compounds with hydrosilanes and carbon monixide in the presence of hydrosilanes and carbon monoxide in the presence of dicobalt octacarbonyl
Siloxymethylation of oxygen-containing compounds by a new catalytic reaction, HSiR3/COCo2(CO)8, is described with emphasis laid on stereoselectivity. In the catalytic reaction, the carbon-oxygen bond in the substrates is cleaved and displaced by a trialkylsiloxymethyl group. The siloxymethylation takes place with inversion, racemization, or retention at the reaction sites, depending on the structure