Erythro-3-Methylglutamic acid is a non-proteinogenic, glutamic acid-derived amino acid bearing an additional methyl substituent at the 3-position of the side chain and an erythro stereochemical relationship between the relevant chiral centers. The molecule contains both an α-amino group and a carboxylic acid group, along with a second carboxylate-bearing glutamate side chain whose terminal functionality supports salt formation and acid-base behavior, while the erythro configuration constrains the relative 3-substituent geometry. As a structurally defined glutamate analogue, it is used in peptide chemistry and chemical biology workflows to probe structure-property relationships, generate substituted amino acid building blocks, and support analytical or labeling studies where a methylated, stereochemically constrained glutamate motif is required.
CAT No: CP08201
Erythro-3-Methylglutamic acid is a chiral glutamic acid derivative in which a methyl substituent at the 3-position generates an erythro stereochemical relationship, preserving the amino acid backbone while introducing a sterically defined, stereocontrolled side-chain environment. The molecule contains a free or readily addressable α-amino functionality and a carboxylic acid group pattern characteristic of glutamate chemistry, enabling conversion to protected amino acid derivatives and activation for amide bond formation. Side-chain carboxyl groups and the 3-methyl stereocenter can influence conformational preferences and intramolecular interactions during peptide coupling and subsequent transformations. As a chiral amino acid intermediate, erythro-3-methylglutamic acid can be incorporated into peptide building blocks, used to access stereodefined analogs, and employed in downstream syntheses that require glutamate-like functional group reactivity with enhanced stereochemical control.
1. Peptide Building Block
Erythro-3-Methylglutamic acid is applied in peptide synthesis and peptide analog construction where glutamate-derived side-chain functionality is required with stereochemical differentiation at the 3-position. The amino acid backbone supports standard peptide coupling chemistry after conversion to an appropriate N-protected form and activation of the carboxyl group, while the additional methyl substituent can modulate steric approach to coupling reagents and influence side-chain conformations in the growing chain. Side-chain carboxyl functionality enables orthogonal protection strategies, allowing selective deprotection for sequential coupling or for generation of mono- and di-functional glutamate motifs. Peptide building block preparation using erythro-3-methylglutamic acid supports structure-activity relationship studies of peptide scaffolds and enables stereodefined incorporation into research-grade peptide libraries.
2. Amino Acid Derivatization
Erythro-3-Methylglutamic acid is utilized for amino acid derivatization workflows that require controlled functional group transformations on a glutamate-like scaffold. The presence of carboxylic acid groups and an amino group supports conversion to esters, amides, and protected acid forms, enabling downstream manipulation such as side-chain activation for conjugation chemistry or conversion to protected intermediates for multi-step synthesis. The erythro stereocenter at the 3-position can be retained through protected amino acid synthesis and can serve as a stereochemical handle for producing diastereomerically defined derivatives. Derivatized forms of erythro-3-methylglutamic acid can function as intermediates for fine chemical synthesis, chiral building blocks for synthetic organic chemistry, and precursors to stereodefined peptidomimetic fragments.
3. Chiral SAR Studies
Erythro-3-Methylglutamic acid is used in SAR studies and molecular design efforts where stereochemistry at a glutamate side-chain position affects binding geometry and conformational behavior. The 3-methyl substitution introduces a defined steric profile adjacent to the glutamate framework, allowing researchers to probe how side-chain bulk and stereochemical orientation influence molecular recognition in peptide-based or peptidomimetic systems. Carboxyl and amino functionalities can be protected and selectively revealed to generate analog series with consistent coupling points and controlled functional group display. Stereodefined analog generation from erythro-3-methylglutamic acid supports fragment-based molecular design and systematic comparison of stereoisomeric or side-chain-modified scaffolds in biochemical research contexts.
4. Bioconjugation Chemistry
Erythro-3-Methylglutamic acid is suitable for bioconjugation chemistry and biomolecule modification where glutamate-like carboxyl groups enable attachment strategies while maintaining a chiral environment. The amino acid's carboxylic acid functionality can be transformed into activated ester or amide-forming derivatives under standard synthetic conditions, and orthogonally protected variants can support stepwise conjugation to biomolecular targets bearing complementary nucleophiles. The erythro stereochemistry can be preserved through protected amino acid intermediate preparation, supporting the synthesis of stereochemically defined conjugates used for chemical biology investigations. Downstream conjugate formation using erythro-3-methylglutamic acid derivatives can feed into analytical method development, biomolecular labeling workflows, and research-grade reagent generation for studying structure-function relationships.
5. Pharmaceutical Intermediate Preparation
Erythro-3-Methylglutamic acid is employed as a chiral amino acid intermediate in pharmaceutical intermediate preparation and process chemistry routes that require stereodefined glutamate analogs. The amino acid's functional group set enables conversion to N-protected and side-chain-protected derivatives, supporting orthogonal deprotection sequences that align with multi-step synthesis of peptide-like or peptidomimetic intermediates. The 3-methyl stereocenter can be leveraged to construct analog series with controlled steric and stereochemical parameters, which is relevant for medicinal chemistry programs that rely on stereodefined building blocks. Industrially relevant manufacturing of protected amino acid derivatives from erythro-3-methylglutamic acid can support specialty chemical production where reproducible stereochemistry and functional group compatibility are required for scale-up planning.
6. Enzyme Substrate Research
Erythro-3-Methylglutamic acid is applied in enzyme studies and biochemical research intermediate development where glutamate-containing motifs act as substrates, inhibitors, or mechanistic probes. The stereodefined 3-methyl substitution can affect how enzyme active sites accommodate glutamate-like side chains, enabling investigation of stereochemical requirements for binding and catalysis in peptide-processing or amino acid recognition pathways. Functional group reactivity allows conversion to protected analogs and activated derivatives that can be used to generate probe molecules with controlled carboxyl presentation and coupling-ready handles. Mechanistic probe synthesis based on erythro-3-methylglutamic acid supports enzyme substrate mapping, inhibitor scaffold construction, and analytical characterization of stereochemically defined reaction intermediates.
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