Preparation method for medical intermediate N-Boc-cis-4-hydroxy-L-proline
2016
The invention provides a preparation method for a medical intermediate N-Boc-cis-4-hydroxy-L-proline. The preparation method comprises the following steps: with L-hydroxyproline as a raw material, subjecting the raw material to Boc protection; then carrying out hydroxyl radical oxidation so as to obtain N-Boc-4-oxo-L-proline; dissolving N-Boc-4-oxo-L-proline in a solvent and successively carrying out reduction with a reducing agent and purification at a certain temperature so as to obtain the product N-Boc-cis-4-hydroxy-L-proline. The method has the advantages of good reaction selectivity, high product ee value and low preparation cost.
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