H-Glu(OMe)-OtBu丨CAS 34582-33-7

H-Glu(OMe)-OtBu is a protected derivative of the amino acid glutamic acid, widely used in peptide synthesis, medicinal chemistry, and bioconjugation. Its methyl ester at the side-chain carboxyl group (OMe) and tert-butyl ester at the α-carboxyl group (OtBu) provide selective protection, allowing stepwise peptide chain elongation without side reactions. It serves as a key building block in solid-phase and solution-phase peptide synthesis, enabling the preparation of bioactive peptides, peptide-based drugs, and peptide mimetics with precise sequence control. In medicinal chemistry, H-Glu(OMe)-OtBu is employed to synthesize enzyme inhibitors, neurotransmitter analogs, and other biologically active compounds that incorporate glutamic acid residues. Its protected form also allows selective functionalization for the preparation of conjugates with fluorescent labels, polymers, or drug molecules, facilitating studies in drug delivery, chemical biology, and biomolecular research.

The benefits of H-Glu(OMe)-OtBu derive from its dual-protection strategy, chemical stability, and versatility in synthesis. The methyl and tert-butyl ester protections prevent undesired reactions at the side-chain and α-carboxyl groups during peptide coupling, ensuring high yields and minimal racemization. This allows chemists to carry out selective deprotection and stepwise elongation, enabling precise construction of complex peptides and modified amino acid derivatives. The compound is soluble in common organic solvents, facilitating efficient incorporation into various synthesis protocols. Its predictable reactivity and compatibility with standard coupling reagents enhance reproducibility, efficiency, and scalability in both laboratory and industrial peptide synthesis. Moreover, it enables the generation of structurally diverse peptides and bioconjugates for pharmaceutical, biochemical, and research applications.