O-Benzyl-L-tyrosine is a protected tyrosine derivative in which the phenolic hydroxyl side chain is converted to an O-benzyl ether while the amino acid backbone retains the amino and carboxyl functional groups. The molecule bears the L-tyrosine stereochemical configuration as indicated by its name, with the side chain presenting a benzyl-protected phenoxy group that modulates hydrogen-bonding and prevents phenolic participation in side reactions. O-Benzyl-L-tyrosine is used as a building block for peptide synthesis and related derivatization workflows where orthogonal protection of the tyrosine phenol supports controlled coupling and later deprotection to regenerate the free phenolic functionality.
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