SYNTHESIS OF 1-ALKYL-2-AMINO-IMIDAZOL-5-CARBOXYLIC ACID ESTER VIA CALPHA-SUBSTITUTED N-ALKYL-GLYCINE ESTER DERIVATIVES

摘要

The invention provides an efficient and high yielding process for preparing TH-302, comprising at least one step wherein a dioxolane intermediate is generated in an aqueous layer, resulting in a synthesis that is amenable to scale up conditions.