Researchers have discovered a method utilizing pyridoxal photoenzymes to facilitate asymmetric radical–radical cross-couplings, offering a new approach to chemical synthesis. The findings, published in *Nature* on July 27, 2026, detail how these enzymes can be used to create complex molecules with specific chiral properties.
The study focuses on leveraging the catalytic power of pyridoxal photoenzymes – naturally occurring biological catalysts – to perform challenging chemical reactions. Specifically, researchers have demonstrated their ability to mediate asymmetric radical–radical cross-couplings. These couplings involve joining two radicals (molecules with unpaired electrons) in a way that creates a new carbon-carbon bond while controlling the stereochemistry of the resulting product.
The significance of this research lies in its potential for synthesizing complex molecules, particularly those with chiral centers – structures that are non-superimposable on their mirror images. Chirality is crucial in many areas, including pharmaceuticals and materials science, as different enantiomers (mirror image forms) of a molecule can have drastically different properties. The ability to selectively create one enantiomer over another is therefore highly desirable.
The article, with DOI 10.1038/s41586-026-10930-9, details the experimental setup and results demonstrating the efficacy of this new method. This approach offers a potentially more sustainable and efficient alternative to traditional chemical synthesis methods that often rely on harsh conditions or expensive catalysts.
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