SCHEDULED MAINTENANCE
Phenylalanine iminoboronates as new phenylalanine hydroxylase modulators†
Abstract
Herein we report the discovery of new modulators of human phenylalanine hydroxylase (hPAH) inspired by the structure of its substrate and regulator L-phenylalanine. These new hPAH modulators were simply prepared in good-to-excellent yields and excellent diastereoselectivities, based on a boron promoted assembly of L-phenylalanine, salicylaldehyde and aryl boronic acids. Iminoboronate 8, prepared with L-phenylalanine, para-methoxy-salicylaldehyde and phenyl boronic acid, was identified as the most efficient hPAH modulator, with an apparent binding affinity nearly identical to the natural allosteric activator L-phenylalanine.
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