Boc-D-Met-OSu

Boc-D-Met-OSu is a D-configured methionine derivative supplied as an N-succinimidyl ester (OSu) bearing a Boc-protecting group on the amino functionality. The activated ester form is designed for efficient acyl transfer to nucleophiles, while the Boc group provides a stable, protected handle for controlled downstream coupling chemistry. This reagent format is widely used in peptide and protein chemistry workflows where methionine-containing segments or methionine-derived linkages are introduced under conditions that benefit from OSu reactivity.

1. Peptide Coupling Reagent

Boc-D-Met-OSu is used as an activated amino acid building block for incorporating D-methionine residues into peptide sequences during custom peptide synthesis and segment assembly. Researchers in peptide chemistry and peptide manufacturing commonly select OSu-activated amino acid derivatives because the succinimidyl ester enables rapid formation of the desired amide bond with an incoming nucleophile under standard coupling workflows, improving convenience when assembling modified or stereodefined peptide structures. The Boc protection on the amino group supports compatibility with protected-peptide intermediate strategies, enabling controlled handling of the amino functionality prior to further peptide elongation.

2. Protein Modification Chemistry

Boc-D-Met-OSu is also applied in protein modification and bioconjugation-style coupling workflows where methionine-derived acyl groups are transferred to nucleophilic residues on proteins or peptide carriers. Chemical biology groups and bioconjugation specialists use OSu esters to generate stable amide linkages to primary amines, including those presented on lysine side chains or engineered amine-bearing motifs on carrier proteins. The reagent's activated ester functionality makes it practical for preparing methionine-containing conjugates used as tools for binding studies, labeling controls, or as defined substrates in biochemical assays that require stereochemically defined building blocks.

3. Pharmaceutical Intermediate Development

Boc-D-Met-OSu is employed as a methionine-based activated intermediate in medicinal chemistry and pharmaceutical intermediate development, particularly when a stereodefined, protected amino acid acyl unit is needed for subsequent functionalization steps. Process and R&D chemists use OSu-activated amino acid derivatives to access amide-forming intermediates that can be carried forward into larger scaffold constructions, including peptidomimetic fragments and methionine-derived side-chain modifications. The combination of Boc protection with the OSu leaving group supports a workflow where the reagent can be converted into downstream amide-bearing intermediates with defined stereochemistry, which is valuable during lead optimization and structure-property studies.

1. An interdomain binding site on HIV-1 Nef interacts with PACS-1 and PACS-2 on endosomes to down-regulate MHC-I

2. Peptides as Active Ingredients: A Challenge for Cosmeceutical Industry

3. Effect of Short-Term Desiccation, Recovery Time, and CAPA-PVK Neuropeptide on the Immune System of the Burying Beetle Nicrophorus vespilloides

4. C-Peptide replacement therapy and sensory nerve function in type 1 diabetic neuropathy

5. Therapeutic potential of an intestinotrophic hormone, glucagon-like peptide 2, for treatment of type 2 short bowel syndrome rats with intestinal bacterial and fungal dysbiosis