N-Hydroxymethyl derivatives of α-amino aldehydes used for the stereoselective syntheses of β-amino-α-hydroxy acids-Science-Chemical Encyclopedia-lookchem

N-Hydroxymethyl derivatives of α-amino aldehydes used for the stereoselective syntheses of β-amino-α-hydroxy acids
Add time:08/02/2019 Source:sciencedirect.com

The N-hydroxymethyl derivatives of α-amino aldehydes 1 were utilized for the effective synthesis of several β-amino-α-hydroxy acid derivatives in a one-pot process starting from the corresponding α-amino aldehydes. Properly protected methyl esters 3 were prepared in 65–79% yields from α-amino aldehyde derivatives 1 with more than 20:1 stereoselectivity. The application of suitably protected β-amino-α-hydroxy esters was shown by an efficient synthesis of the bioactive peptide, bestatin, and its more potent analogue, AHPBA-Val, in high yields from ent-3a.

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