Reductive Condensation between β-Keto Esters and Aldehydes: Preparation of Novel Carbon-Linked Dihydropyrone Inhibitors of Hepatitis C Virus Polymerase
The route for the preparation of carbon-linked pyrone libraries involving an optimized one-step reductive condensation between active methylene compounds and aldehydes is described. The initial synthesis of these analogues utilizing conventional alkylation methods proved to be unsuitable for singleton or library application. The chemistry was not only low-yielding but presented serious purification