# Dynamic kinetic resolution-mediated synthesis of C-3 hydroxylated arginine derivatives

## TL;DR

Scientists developed a new method to synthesize hydroxylated arginine derivatives using a dynamic kinetic resolution process.

## Contribution

A novel dynamic kinetic resolution method is introduced for synthesizing C-3 hydroxylated arginine derivatives.

## Key findings

- The DKR method produced a (3R)-hydroxylated product matching a synthetically derived compound.
- High diastereomeric and enantiomeric excess was achieved using an (R)-SEGPHOS/Ru(II) catalyst.
- The approach demonstrates DKR's effectiveness for amino acid derivative synthesis.

## Abstract

Hydroxylated amino acids and their derivatives, including those found in proteins, are important in biology and medicinal chemistry. Incubation of N-acetyl-l-arginine with clavaminic acid synthase, a key oxygenase in clavulanic acid biosynthesis, affords a (3R)-hydroxylated product that is identical to material obtained by total synthesis from Boc-beta alanine. The key step employed dynamic kinetic resolution (DKR) of a β-ketoester precursor, achieved in high diastereomeric and enantiomeric excess using an (R)-SEGPHOS/Ru(II) catalyst. The results highlight the utility of DKR for the preparation of C-3 hydroxylated amino acid derivatives.