H-L-Glu(Bzl)-NH2*HCl

H-L-Glu(Bzl)-NH2*HCl is a protected amino acid derivative corresponding to L-glutamine/glutamic acid functionality in which the side-chain carboxyl is masked as a benzyl ester (Glu(Bzl)), while the α-amino group is present as a free amine hydrochloride salt (NH2·HCl). The molecule contains a stereogenic center at the α-carbon of the L-configuration, a benzyl-protected γ-carboxyl that can be removed by hydrogenolysis or related benzyl deprotection strategies, and a salt form that improves handling of the amine during coupling and derivatization. The combination of a protected side-chain carboxyl and a terminal amino group makes the compound suitable for controlled peptide-bond formation and for downstream conversion into glutamate-based motifs. The ester-protected side chain also enables selective functional group transformations without perturbing the α-amino functionality, supporting its role as a chiral intermediate for peptide building block preparation and synthetic organic chemistry.

1. Protected Amino Acid Synthesis

H-L-Glu(Bzl)-NH2*HCl supports protected amino acid chemistry for assembling glutamate-derived fragments in peptide construction workflows. The benzyl ester on the side-chain carboxyl provides a stable handle during amide coupling at the α-amino position, while the L-stereochemistry maintains stereochemical fidelity for glutamic acid analogs. The hydrochloride salt form can be leveraged to manage amine protonation state during activation and coupling steps, enabling consistent incorporation into protected amino acid intermediates. Benzyl deprotection can subsequently regenerate the γ-carboxyl functionality for further coupling, cyclization, or side-chain derivatization, aligning with protected amino acid synthesis and iterative peptide assembly strategies. The compound's structural design therefore functions as a chiral amino acid intermediate for downstream glutamate motif generation.

2. Peptide Synthesis

H-L-Glu(Bzl)-NH2*HCl is applicable to peptide synthesis where a glutamate side chain must remain protected during sequential chain elongation. The benzyl-protected γ-carboxyl group reduces undesired side reactions during formation of peptide bonds involving the α-amino group, while the free α-amino functionality enables coupling to activated carboxylic acid partners. L-configuration at the α-carbon ensures stereospecific incorporation into peptide backbones and supports the preparation of glutamate-containing peptides and peptide fragments. Subsequent benzyl removal can restore the side-chain carboxyl for final deprotection, salt formation, or post-synthetic functionalization such as conjugation or crosslinking precursor generation. The compound thus serves as a peptide building block precursor compatible with protecting-group strategies commonly used for glutamate chemistry.

3. Bioconjugation Chemistry

H-L-Glu(Bzl)-NH2*HCl can be employed in bioconjugation chemistry as a chiral intermediate for introducing glutamate-derived linkers and functional handles onto biomolecules. The protected γ-carboxyl enables staged synthesis of glutamate-containing conjugation motifs, while the α-amino group provides a defined functional group for coupling to activated carboxylates or for conversion into amide-linked attachment points. Benzyl ester deprotection can generate a free carboxyl group that may be transformed into activated esters, amide-forming intermediates, or chelator-bearing derivatives depending on the conjugation design. The stereochemical integrity of the L-amino acid center helps preserve recognition elements in linker regions used in chemical biology and protein labeling. The compound's amino acid-based scaffold therefore supports downstream biomolecule modification workflows that rely on controlled carboxyl availability.

4. Peptidomimetics And SAR Studies

H-L-Glu(Bzl)-NH2*HCl is suitable for peptidomimetic and structure-activity relationship (SAR) studies requiring glutamate side-chain presentation under protection-controlled conditions. The benzyl ester masks the γ-carboxyl during synthesis of analogs where side-chain acidity or spacing is tuned, while the α-amino group facilitates incorporation into constrained scaffolds through amide bond formation. L-stereochemistry supports consistent three-dimensional placement of the side chain relative to the backbone, which is often critical when evaluating analog libraries for receptor binding or enzyme recognition in SAR campaigns. Benzyl deprotection can provide a reactive carboxyl group for subsequent derivatization into alternative acidic surrogates, cyclized motifs, or functionalized side chains used to probe structure-function relationships. The compound thereby functions as a chiral glutamate intermediate for generating chemically defined peptidomimetic structures.

5. Process Chemistry Intermediate

H-L-Glu(Bzl)-NH2*HCl is relevant to process chemistry and fine chemical synthesis as a manufacturable chiral intermediate for glutamate-protected building blocks. The benzyl ester protecting group offers a clear orthogonality profile for protecting the side-chain carboxyl during upstream transformations, while the amino hydrochloride salt supports practical handling and controlled reactivity of the α-amino group. The defined stereocenter and protected functional group set can be integrated into scalable routes for preparing protected amino acid derivatives used in iterative peptide and peptidomimetic manufacturing. Benzyl deprotection provides a downstream lever for converting the intermediate into the corresponding free γ-carboxyl form without altering the α-stereochemistry, supporting convergent synthesis strategies. The compound's structure aligns with industrial intermediate preparation where protecting-group stability and predictable deprotection behavior are central to route design.

1. Uncarboxylated osteocalcin decreases insulin-stimulated glucose uptake without affecting insulin signaling and regulators of mitochondrial biogenesis in myotubes

2. Novel Peptide-Based PD1 Immunomodulators Demonstrate Efficacy in Infectious Disease Vaccines and Therapeutics

3. GLP-1, exendin-4 and C-peptide regulate pancreatic islet microcirculation, insulin secretion and glucose tolerance in rats

4. Emerging applications of nanotechnology for diagnosis and therapy of disease: a review

5. Autoinhibition and phosphorylation-induced activation of phospholipase C-γ isozymes