Synthesis of [4S-2 H]NADH, [4R-2 H]NADH, [4-2 H2 ]NADH and [4-2 H]NAD+ cofactors through heterogeneous biocatalysis in heavy water

Synthesis of Metabolites and Metabolite-like Compounds Using Biocatalytic Systems

Methodologies for the synthesis and purification of metabolites, which have been developed following their discovery, analysis, and structural identification, have been involved in numerous life science milestones. The renewed focus on the small molecule domain of biological cells has also created an increasing awareness of the rising gap between the metabolites identified and the metabolites which have been prepared as pure compounds. The design and engineering of resource-efficient and straightforward synthetic methodologies for the production of the diverse and numerous metabolites and metabolite-like compounds have attracted much interest. The variety of metabolic pathways in biological cells provides a wonderful blueprint for designing simplified and resource-efficient synthetic routes to desired metabolites. Therefore, biocatalytic systems have become key enabling tools for the synthesis of an increasing number of metabolites, which can then be utilized as standards, enzyme substrates, inhibitors, or other products, or for the discovery of novel biological functions.

Synthesis of [4S-2 H]NADH, [4R-2 H]NADH, [4-2 H2 ]NADH and [4-2 H]NAD+ cofactors through heterogeneous biocatalysis in heavy water

This practitioner protocol describes the synthesis of a family of deuterated nicotinamide cofactors: [4S‐²H]NADH, [4R‐²H]NADH, [4‐²H₂]NADH and [4‐²H]NAD⁺. The application of a recently developed H₂‐driven heterogeneous biocatalyst enables the cofactors to be prepared with high (>90%) ²H‐incorporation with ²H₂O as the only isotope source.