Z-D-PHG-OH NEW

Z-D-Phenylglycine (Nα-Carbobenzyloxy-D-phenylglycine) is a specialized chiral building block primarily used in pharmaceutical synthesis and peptide chemistry. Its applications leverage the D-phenylglycine moiety for bioactivity and the Z-group (benzyloxycarbonyl) as a protective handle. Key applications include:

1. β-Lactam Antibiotic Synthesis

• Core Side Chain for Cephalosporins:
  Serves as a precursor for D-phenylglycine derivatives in oral cephalosporins:

• Cefalexin

• Cefadroxil

• Cefaclor

• Role:
  The D-configuration is critical for antibiotic efficacy, resisting enzymatic degradation. The Z-group protects the amine during synthesis and is later removed (e.g., via hydrogenolysis).

2. Peptidomimetics & Drug Design

• Non-Proteinogenic Amino Acid:
  Incorporated into peptides to:

• Enhance metabolic stability (resists proteases).

• Improve bioavailability (via altered stereochemistry).

• Modify receptor binding (e.g., in GPCR-targeted drugs).

• Examples:

• Anticancer peptides (targeting integrins).

• Neuromodulators (e.g., calcitonin gene-related peptide analogs).

3. Chiral Auxiliary/Resolving Agent

• Asymmetric Synthesis:
  Used to resolve racemic mixtures or induce chirality in:

• Catalysts for hydrogenation.

• Chiral ligands (e.g., for Pd-catalyzed cross-coupling).

• Advantage:
  Rigid phenyl group enhances stereocontrol.

4. Agrochemical Synthesis

• Chiral Herbicides/Pesticides:
  Key intermediate in optically active agrochemicals (e.g., aryloxyphenoxypropionates).