• 1. Amino acid fluorides: viable tools for synthesis of peptides, peptidomimetics and enantiopure heterocycles
  Girish Prabhu,N. Narendra,Basavaprabhu,V. Panduranga,Vommina V. Sureshbabu RSC Adv. 2015 5 48331

• Solvents and Organic Chemicals Organic Compounds Benzenoids Fluorenes Fluorenes
• Solvents and Organic Chemicals Organic Compounds Benzenoids Fluorenes

Introduction to Fmoc-d-cys(tbu)-oh (CAS No. 131766-22-8) in Modern Chemical Biology

The compound Fmoc-d-cys(tbu)-oh, with the chemical abstracts service number CAS No. 131766-22-8, represents a significant advancement in the field of peptidomimetics and proteomics. This protected amino acid derivative is widely utilized in the synthesis of complex peptides and proteins, particularly in the development of novel therapeutic agents. The combination of the Fmoc (fluorenylmethyloxycarbonyl) protecting group and the d-cysteine residue with a tert-butyl (tBu) group offers unique chemical properties that enhance both stability and reactivity, making it indispensable in synthetic chemistry.

In recent years, the demand for high-quality peptide-based drugs has surged due to their targeted specificity and reduced side effects compared to traditional small-molecule pharmaceuticals. The role of Fmoc-d-cys(tbu)-oh in this landscape cannot be overstated. Its structural features make it particularly useful for constructing disulfide bridges, which are critical for maintaining the three-dimensional conformation of many bioactive peptides. These bridges are often essential for the biological activity of proteins, such as insulin and growth factors, where proper folding is paramount.

One of the most compelling applications of Fmoc-d-cys(tbu)-oh is in the field of antibody-drug conjugates (ADCs). ADCs represent a cutting-edge class of cancer therapeutics that combine the targeting ability of monoclonal antibodies with the cytotoxic potential of small molecules. The synthesis of these complex molecules requires highly stable and well-defined peptide linkers, where Fmoc-d-cys(tbu)-oh excels due to its robust protecting group and predictable reactivity. Recent studies have demonstrated its efficacy in enhancing linker stability under various physiological conditions, thereby improving the overall efficacy and safety profile of ADCs.

The Fmoc protecting group on Fmoc-d-cys(tbu)-oh is particularly advantageous for solid-phase peptide synthesis (SPPS). SPPS is a cornerstone technique in peptide chemistry, enabling the efficient assembly of long peptides under controlled conditions. The Fmoc group allows for selective deprotection at each step, ensuring high fidelity in peptide sequence formation. This makes Fmoc-d-cys(tbu)-oh an ideal building block for synthesizing large-scale peptide libraries, which are invaluable in drug discovery and biomarker identification.

Moreover, the tert-butyl (tBu) group on the cysteine residue provides additional stability to the thiol moiety, protecting it from unwanted oxidation during synthesis. This feature is particularly important when working with air-sensitive or moisture-sensitive compounds, as it minimizes degradation and ensures consistent product quality. The stability offered by the tBu group also extends to post-synthetic modifications, allowing researchers to perform further functionalization without compromising the integrity of the cysteine residue.

Recent advancements in mass spectrometry have further highlighted the utility of Fmoc-d-cys(tbu)-oh. High-resolution mass spectrometry (HRMS) techniques enable precise structural elucidation and purity assessment of peptides, which are critical for ensuring therapeutic efficacy. The unique spectral signature of Fmoc-d-cys(tbu)-oh facilitates accurate detection and quantification, making it an essential component in quality control protocols for peptide-based therapeutics.

In conclusion, Fmoc-d-cys(tbu)-oh (CAS No. 131766-22-8) is a versatile and indispensable tool in modern chemical biology. Its combination of protective features enhances peptide synthesis, stability, and functionality, making it a preferred choice for researchers developing novel peptidic drugs. As advancements continue to emerge in peptidomimetics and proteomics, the importance of compounds like Fmoc-d-cys(tbu)-oh will only grow, driving innovation across multiple sectors of pharmaceutical research and development.

• 252049-18-6(Fmoc-S-benzyl-D-cysteine)
• 332062-08-5(Fmoc-S-3-amino-4,4-diphenyl-butyric acid)
• 1270529-38-8(1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol)
• 2680771-01-9(4-cyclopentyl-3-{(prop-2-en-1-yloxy)carbonylamino}butanoic acid)
• 2098070-20-1(2-(3-(Pyridin-3-yl)-1H-pyrazol-1-yl)acetimidamide)
• 1444113-98-7(N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide)
• 941977-17-9(N'-(3-chloro-2-methylphenyl)-N-2-(dimethylamino)-2-(naphthalen-1-yl)ethylethanediamide)
• 2138166-62-6(2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid)
• 89640-58-4(2-Iodo-4-nitrophenylhydrazine)
• 1449132-38-0(3-Fluoro-5-(2-fluoro-5-methylbenzylcarbamoyl)benzeneboronic acid)