Fmoc-L-Thz(Me2)-OH is an Fmoc-protected L-threonine-derived thiazole-containing amino acid building block, featuring a thiazole ring substituted with a Me2 group on the heterocycle and an amino acid backbone suitable for peptide assembly. The molecule bears an Fmoc carbamate on the α-amino functionality and retains a free carboxylic acid, while the side-chain heteroaromatic system provides defined polarity and potential for noncovalent interactions in peptide contexts. In synthesis, it functions as a protected amino acid component for stepwise or solid-phase peptide synthesis and as a structural probe in peptide and peptidomimetic studies where incorporation of a thiazole-bearing, substituted residue is used to modulate conformation and side-chain recognition.
CAT No: CP26084
CAS No:873842-06-9
Chemical Name:(R)-N-(9-Fluorenylmethyloxycarbonyl)-2,2-dimethyl-thiazolidine-4-carboxylic acid
Fmoc-L-Thz(Me2)-OH is an Fmoc-protected L-thiazole amino acid derivative in which the amino acid nitrogen is protected as the fluorenylmethoxycarbonyl (Fmoc) carbamate, while the side chain is a thiazole ring bearing a Me2-substituted motif. The molecule presents a chiral center at the amino acid backbone, a carboxylic acid functionality for amide formation, and an aromatic heterocycle that can participate in π-stacking and heteroatom-directed interactions during peptide or peptidomimetic assembly. The thiazole ring and its substituent pattern can undergo standard heteroaryl-compatible transformations, while the Fmoc group supports orthogonal protection strategies commonly used in solid-phase peptide synthesis. As a chiral amino acid intermediate, Fmoc-L-Thz(Me2)-OH is designed for controlled incorporation into peptide building blocks and downstream synthesis of heteroaromatic analogs used in biochemical and medicinal chemistry workflows.
1. Peptide Synthesis
Fmoc-L-Thz(Me2)-OH supports peptide construction in research and manufacturing settings where heteroaryl side chains are required for conformational bias and molecular recognition. The Fmoc-protected amine enables stepwise peptide coupling under Fmoc deprotection conditions, while the free carboxylic acid participates in amide bond formation to install the thiazole-bearing residue at either internal positions or defined termini. The thiazole ring provides a rigid, electron-deficient aromatic handle that can influence local backbone geometry and side-chain orientation in peptide sequences. The resulting peptidic products can be used to generate structure-activity relationship panels and to prepare peptide-based probes that rely on heteroatom-rich motifs for binding and stability.
2. Peptidomimetics And SAR Studies
Fmoc-L-Thz(Me2)-OH serves as a chiral building block for peptidomimetic construction where thiazole-containing residues are used to modulate potency-relevant physicochemical properties without relying solely on natural side chains. The amino acid backbone and Fmoc protection facilitate incorporation into constrained analogs, while the thiazole Me2 substitution pattern provides a defined steric and electronic environment for SAR studies. The heteroaromatic side chain can be retained, functionalized, or used as a scaffold for further derivatization, enabling systematic exploration of side-chain electronics and steric effects. Downstream analogs prepared from this residue can be used in medicinal chemistry research to map how heteroaryl substitution affects binding mode hypotheses and structure-dependent behavior.
3. Chemical Biology Probes
Fmoc-L-Thz(Me2)-OH is suitable for chemical biology research aimed at producing peptide-based probes and affinity reagents that incorporate heteroaryl recognition elements. The Fmoc-protected amine and carboxylic acid allow controlled assembly of labeled or capture-capable constructs, while the thiazole ring can function as a recognition motif that participates in noncovalent interactions with protein binding pockets. The chiral L-configuration helps maintain stereochemical fidelity when the residue is embedded into larger biomolecule scaffolds, supporting reproducible structure-function investigations. The resulting probe conjugates can be further modified at peptide termini or via side-chain-compatible chemistry to generate tool molecules for target engagement studies and biochemical characterization.
4. Protected Amino Acid Chemistry
Fmoc-L-Thz(Me2)-OH functions as an Fmoc-protected amino acid derivative for protected amino acid synthesis workflows that require orthogonal handling of the amine and carboxyl groups. The Fmoc carbamate protects the amino functionality during coupling steps, while the unprotected carboxylic acid enables selective activation for peptide coupling or for conversion into activated intermediates used in fragment assembly. The presence of a heteroaryl thiazole ring supports compatibility with common peptide synthesis conditions and can be carried through multi-step sequences without losing the stereochemical configuration of the chiral center. The compound can be employed as a defined intermediate to prepare libraries of heteroaromatic peptide building blocks, enabling consistent downstream derivatization and deprotection strategies.
5. Pharmaceutical Intermediate Preparation
Fmoc-L-Thz(Me2)-OH can be applied in pharmaceutical intermediate preparation where heteroaromatic amino acid residues are incorporated into candidate-like peptide fragments and synthetic building blocks. The Fmoc-protected amine and carboxylic acid provide a manufacturable handle for controlled coupling chemistry, supporting scalable synthesis of defined peptidic intermediates used in medicinal chemistry and process development. The thiazole ring contributes a stable, heteroatom-rich motif that can be carried into later stages of synthesis for further functional group transformations or for final drug-like scaffold assembly. The compound's chiral amino acid architecture aligns with industrial fine chemical synthesis practices that require stereochemically defined inputs for reproducible intermediate generation.
6. Analytical Standards Development
Fmoc-L-Thz(Me2)-OH may serve as an analytical standard or reference intermediate in peptide and amino acid method development where monitoring of Fmoc-based building blocks and thiazole-containing residues is required. The Fmoc group and carboxylic acid functionality enable unambiguous detection and method validation for workflows that involve Fmoc deprotection, peptide coupling, and subsequent chromatographic separation of heteroaryl-containing species. The chiral L-configuration and defined thiazole substitution pattern help distinguish this residue from related thiazole analogs during impurity profiling and structural verification. The compound can therefore support analytical research and quality-oriented characterization of peptide synthesis intermediates and final heteroaromatic peptide products.
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