Fmoc-Dap(Adpoc)-OH

Fmoc-Dap(Adpoc)-OH is an Fmoc-protected lysine side-chain analog in which the side-chain amine is masked as an Adpoc (adamantyl oxycarbonyl) carbamate, while the alpha-amino group is protected by the fluorenylmethoxycarbonyl group. The molecule therefore presents a protected amino acid framework with a stereodefined chiral center at the alpha carbon, a carboxylic acid for activation and coupling, and two orthogonal nitrogen-protecting groups that can be selectively removed under peptide-synthesis compatible conditions. The Adpoc carbamate is designed to resist premature deprotection during standard peptide assembly yet can be unmasked when side-chain functionality is required, enabling controlled access to the lysine-like side-chain amine. The presence of the Fmoc group also supports iterative solid-phase peptide synthesis workflows, while the protected amine and carboxylate functionality make the compound a practical intermediate for constructing amino acid derivatives and peptidomimetic scaffolds.

1. Peptide Synthesis

Fmoc-Dap(Adpoc)-OH is used as a protected amino acid building block for solid-phase peptide synthesis and solution-phase peptide coupling where lysine-like side-chain amine presentation is required at a defined stage. The carboxylic acid participates in amide bond formation, while the Fmoc group enables orthogonal N-terminal deprotection cycles to expose the alpha-amino functionality for sequential coupling. The Adpoc carbamate on the side chain maintains the side-chain nitrogen in a protected state during routine chain assembly, supporting strategies that delay side-chain activation until after backbone elongation. The resulting peptide products can incorporate a controlled lysine analog for downstream conjugation, branching, or formation of side-chain-modified analogs, aligning with peptide chemistry workflows that require orthogonal protection management.

2. Chemical Biology Conjugation

Fmoc-Dap(Adpoc)-OH supports chemical biology workflows that require site-controlled introduction of a primary amine handle for bioconjugation or affinity reagent construction. The Adpoc-protected side-chain nitrogen can be unmasked to generate a lysine-like amine for coupling to activated esters, isothiocyanates, aldehydes, or other electrophiles used in labeling chemistry. The Fmoc-protected alpha-amino acid framework enables incorporation into peptide or peptidomimetic carriers, allowing conjugation sites to be positioned along a molecular scaffold rather than introduced randomly. The downstream utility includes generation of amine-functional peptides for target engagement studies, probe development, and reagent synthesis where orthogonal deprotection helps maintain compatibility with other protected functional groups.

3. Drug Discovery SAR Studies

Fmoc-Dap(Adpoc)-OH is applicable to medicinal chemistry and structure-activity relationship studies that rely on systematic side-chain modifications of peptide-like scaffolds. The lysine-like side-chain amine, protected as an Adpoc carbamate, can be converted into a variety of derivative functionalities after controlled deprotection, enabling SAR-driven exploration of charge, hydrogen-bonding patterns, and linker chemistry. The Fmoc group supports rapid assembly of analog series by enabling consistent backbone incorporation and minimizing cross-reactivity during synthetic diversification. The compound can therefore serve as a chiral amino acid intermediate for generating focused libraries of peptidomimetic analogs with defined amine-derived substituents, supporting iterative refinement of structure-function relationships in discovery programs.

4. Protected Amino Acid Chemistry

Fmoc-Dap(Adpoc)-OH is employed in protected amino acid synthesis and protecting-group strategy development where orthogonal nitrogen masking is central to reliable downstream transformations. The dual protection pattern, combining an Fmoc carbamate at the alpha-amino position with an Adpoc carbamate at the side-chain amine, enables staged deprotection logic to control which nitrogen is reactive during a given synthetic step. The carboxylic acid provides a handle for activation to form amides, while the protected nitrogens reduce undesired side reactions such as over-alkylation or premature conjugation. The compound thereby functions as a practical intermediate for preparing N- and side-chain-modified amino acid derivatives, including intermediates used in peptide building block preparation and chiral synthetic intermediate workflows.

5. Pharmaceutical Manufacturing Intermediates

Fmoc-Dap(Adpoc)-OH can be integrated into manufacturing-oriented peptide intermediate preparation where reproducible protection and coupling behavior are required for process chemistry. The Fmoc group supports controlled N-terminal deprotection cycles, while the Adpoc carbamate provides side-chain nitrogen stability during peptide assembly, reducing the risk of unintended side reactions that complicate scale-up. The presence of a free carboxylic acid enables standardized activation chemistry for amide bond formation, making the compound compatible with manufacturing routes that build peptide intermediates under defined coupling conditions. The resulting peptide fragments or amino acid-derived intermediates can be further processed into drug-like peptide analogs or amine-functional intermediates for downstream derivatization steps, aligning with fine chemical and pharmaceutical intermediate production practices.

6. Peptidomimetics And Materials

Fmoc-Dap(Adpoc)-OH is suitable for constructing peptidomimetic scaffolds and functional polymer or surface-active materials where controlled amine incorporation is required. The protected side-chain amine can be converted into reactive primary amines after deprotection, enabling formation of linkers, crosslinking points, or attachment handles for material conjugation chemistries. The amino acid backbone and chiral center support incorporation into structured oligomers that mimic peptide recognition motifs, while the Fmoc-protected functionality supports stepwise assembly into defined sequences or segment-like units. The compound can therefore serve as an amino acid-based intermediate for generating amine-functional oligomers and conjugates used in specialty chemical production and functional material synthesis, including platforms that depend on predictable amine placement for subsequent coupling reactions.

1. Immune-awakening Saccharomyces-inspired nanocarrier for oral target delivery to lymph and tumors

2. Effect of Probiotic Lactobacillus plantarum on Streptococcus mutans and Candida albicans Clinical Isolates from Children with Early Childhood Caries

3. Store-operated Ca2+ entry sustains the fertilization Ca2+ signal in pig eggs

4. Adipose tissue is a key organ for the beneficial effects of GLP-2 metabolic function

5. Multifunctional peptide-oligonucleotide conjugate promoted sensitive electrochemical biosensing of cardiac troponin I