Dimethyl((3S)-4-phenyl-3-(Boc-amino)-2-oxobutyl)phosphonate

Dimethyl((3S)-4-phenyl-3-(Boc-amino)-2-oxobutyl)phosphonate is a chiral, Boc-protected amino acid derivative featuring a phosphonate-bearing side chain attached to a stereogenic center at the (3S) position. The molecule contains a carbamoyl-protected amine (Boc), a carboxyl-derived carbonyl within the 2-oxobutyl framework, and a dimethyl phosphonate functional group that can participate in phosphorylation-mimetic chemistry and strong metal-ion coordination. The presence of both an amide-forming nitrogen equivalent (after Boc removal) and a phosphorylated motif makes it suitable for controlled peptide coupling and for downstream conversion into phosphonate analogs used in biochemical and synthetic chemistry. The stereochemical integrity of the (3S) center supports stereodefined incorporation into peptide-like scaffolds and chiral intermediate sequences for fine chemical manufacturing.

1. Peptide Synthesis

Dimethyl((3S)-4-phenyl-3-(Boc-amino)-2-oxobutyl)phosphonate is applied in peptide building block preparation where the Boc-protected amino group enables selective amide bond formation under standard coupling conditions after deprotection. The amino acid-like backbone and the defined (3S) configuration support stereochemically consistent incorporation into peptide fragments, while the phosphonate substituent can remain intact as a functional handle for later transformations or for constructing phosphonate-containing peptide analogs. The phosphonate group's ability to engage in coordination and hydrogen-bonding interactions can influence solubility and purification behavior during peptide assembly and subsequent derivatization. Downstream, the resulting phosphonate-bearing peptides can be used to generate structure-activity relationship variants and to prepare chemically defined analogs for biochemical characterization.

2. Phosphonate Peptidomimetics

Dimethyl((3S)-4-phenyl-3-(Boc-amino)-2-oxobutyl)phosphonate serves in peptidomimetic and molecular design workflows targeting phosphorylation-mimetic motifs. The dimethyl phosphonate functionality provides a stable, anionic surrogate that can be retained through scaffold assembly, enabling access to phosphonate analogs that mimic phosphate recognition elements in enzyme active sites or binding pockets. The combination of a protected amine and a stereodefined amino acid core supports the construction of constrained peptide-like structures where side-chain electronics and geometry are controlled by the (3S) stereocenter and the phenyl substituent. The resulting phosphonate-containing intermediates can be further converted into monoester or other phosphonate formats to expand chemical space for SAR studies and binding-site mapping.

3. Chemical Biology Probes

Dimethyl((3S)-4-phenyl-3-(Boc-amino)-2-oxobutyl)phosphonate is used in chemical biology research as a phosphorylated motif precursor for probe and substrate analog synthesis. The phosphonate group can function as a non-hydrolyzable phosphate mimic, while the amino acid-derived backbone and Boc protection strategy allow controlled generation of reactive coupling partners after deprotection. The phenyl-containing stereodefined scaffold can support incorporation into probe libraries designed to interrogate phospho-recognition pathways, protein-ligand interactions, or enzyme specificity without requiring labile phosphate groups. The compound can be employed as a synthetic intermediate toward labeled or derivatized phosphonate analogs that enable downstream biochemical assays and mechanistic studies of phosphate-dependent recognition.

4. Process Chemistry Intermediate

Dimethyl((3S)-4-phenyl-3-(Boc-amino)-2-oxobutyl)phosphonate is suitable for process chemistry intermediate preparation in fine chemical and specialty chemical production where protected amino acid derivatives and phosphonate functionalities must be handled with selectivity. The Boc-protected amine provides a controllable protection strategy that can be removed or transformed in a planned sequence, while the dimethyl phosphonate group can tolerate multiple synthetic operations and can be converted into other phosphorus oxidation states or ester forms when required. The defined stereocenter at (3S) supports stereochemically consistent manufacturing routes for chiral intermediate supply to peptide and peptidomimetic production lines. The resulting intermediate can be integrated into scalable synthesis of phosphonate-bearing amino acid derivatives used for downstream scaffold generation and industrially relevant chemical manufacturing.

5. Biomolecule Labeling

Dimethyl((3S)-4-phenyl-3-(Boc-amino)-2-oxobutyl)phosphonate can be applied to biomolecule labeling and biomolecule modification strategies that rely on phosphonate-containing linkers or recognition elements. The protected amino group enables stepwise conversion into a coupling-ready functionality, while the phosphonate moiety can serve as a stable anchor for affinity-based capture or for designing phosphonate-reactive conjugation schemes. The stereodefined amino acid framework contributes to consistent linker geometry when incorporated into conjugates, and the phenyl substituent can modulate hydrophobicity and local conformational preferences around the attachment point. Downstream conjugate formation can yield defined phosphonate-decorated constructs useful for analytical research, binding studies, and the preparation of chemically characterized biomolecule derivatives.

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