Alkoxide-catalyzed addition of alkyl carbonates across alkynes – stereoselective synthesis of (E)-β-alkoxyacrylates
作者:Timo Wendling、Eugen Risto、Benjamin Erb、Lukas J. Gooßen
DOI:10.1039/c6gc03168d
日期:——
Dialkyl carbonates were found to regio- and stereoselectively add to terminal alkynes in the presence of catalytic amounts of potassium methoxide. Various synthetically meaningful aryl- and heteroaryl-substituted (E)-[small beta]-alkoxyacrylates were thus...
Stereoselective Formation of (E)-β-Alkoxy Acrylates from Fischer Carbene Complexes and Chelated Amino Acid Ester Enolates
作者:Uli Kazmaier、Rupsha Chaudhuri
DOI:10.1055/s-0033-1340496
日期:——
Chelated amino acid esterenolates react with alkyl Fischer carbene complexes via nucleophilic attack on the electrophilic carbene center. Subsequent elimination of the metal fragment and trifluoroacetamide results in the formation of β-alkoxy-α,β-unsaturated esters in a highly E -stereoselective fashion.
The present invention is directed to compounds which contain substituted pyridazines and pyrimidines moieties which inhibit the activity of Akt, a serine/threonine protein kinase. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for treating cancer comprising administration (if the compounds of the invention.
The present invention is directed to compounds which contain substituted pyridazines and pyrimidines moieties which inhibit the activity of Akt, a serine/threonine protein kinase. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for treating cancer comprising administration of the compounds of the invention.