Peptidesynthesis The BOP reagent, scientifically known as benzotriazol-1-yl-oxy-tris-(dimethylamino)phosphonium hexafluorophosphate, is a critical tool in modern peptide synthesis. Its primary function is to facilitate the formation of peptide bonds, enabling chemists to construct complex peptide chains efficiently. This peptide coupling reagent is widely recognized for its ability to activate carboxylic acids, making them reactive towards amines, a fundamental step in building peptides.BOPis a coupling reagent, which is derived from phosphonium sources and employed inpeptidesynthesis. It functions by facilitating the formation of ... The BOP reagent's effectiveness, particularly in challenging coupling scenarios and solid-phase peptide synthesis (SPPS), has cemented its status as an indispensable reagent in research laboratories and the pharmaceutical industry.
Peptide synthesis involves the sequential linking of amino acids. Each linkage requires the formation of an amide bond between the carboxyl group of one amino acid and the amino group of another. This process, while conceptually simple, can be fraught with challenges such as low yields, racemization (loss of stereochemical integrity), and the formation of unwanted side products like diketopiperazines. The BOP reagent addresses these issues by providing a highly efficient method for activating the carboxyl group.
When used, the BOP reagent reacts to form an activated ester intermediate.Bop Reagent CAS No: 56602-33-6, Technical Grade at ... - IndiaMART This intermediate is highly susceptible to nucleophilic attack by the amine component, leading to rapid and efficient peptide bond formationPyBOP - Wikipedia. A key advantage of BOP reagent is its ability to suppress racemization during the coupling process, which is crucial for maintaining the biological activity and integrity of the synthesized peptidesBOP reagent - Wikipedia. This makes it particularly valuable for synthesizing peptides with sensitive amino acid sequences or for applications where stereochemical purity is paramount, such as in the synthesis of therapeutic peptides作者：A El‐Faham·2014·被引用次数：11—A new method for the synthesis ofpeptidesusing the adducts of phosphorus compounds and tetrahalomethanes. Chem. Pharm. Bull. 1974; 22: 832–840 ....
Solid-phase peptide synthesis (SPPS) is a widely adopted technique where the growing peptide chain is anchored to an insoluble polymer resinBOP-Cl is a highly effective reagent for the acylation of N-methyl amino acids. It provides good yields with low epimerization.. This method allows for easier purification by simply washing away excess reagents and by-products. The BOP reagent has found extensive application in SPPS, often proceeding more rapidly and to a greater degree of completion compared to older methods. Its efficiency in SPPS has been instrumental in accelerating the development of peptides for research and therapeutic purposes. For instance, BOP couplings have been shown to be highly effective in solid-phase procedures, leading to improved yields and reduced reaction times, especially when dealing with difficult couplings or longer peptide sequences.BOP reagent for solid phase peptide synthesis
The widespread adoption of the BOP reagent stems from several key advantages:
* High Efficiency: It reliably promotes peptide bond formation, even with sterically hindered amino acids or in challenging coupling sequences.
* Suppression of Racemization: A significant benefit is its ability to minimize or prevent the loss of stereochemical purity, a common pitfall in peptide synthesis. This is particularly important for biologically active peptides.
* Rapid Reaction Rates: BOP reagent generally leads to faster coupling reactions, saving valuable time in the laboratory.作者：K Sierosławski·2003·被引用次数：4—... (BOP) is a derivative of N-hydroxybenzotriazole and a well-known coupling reagent used forpeptidesynthesis, also called theBOPor Castro reagent [1]. This ...
* Versatility: It is effective in both solution-phase and solid-phase peptide synthesis.
While BOP reagent is highly effective, the field of peptide coupling reagents is constantly evolving. Other related phosphonium-based reagents have been developed, often aiming to improve upon BOP's characteristics or address specific synthetic challenges.
* PyBOP (Benzotriazol-1-yl-oxy-tris-pyrrolidino-phosphonium hexafluorophosphate): Similar to BOP, PyBOP is a widely used coupling reagent known for its fast and efficient peptide coupling reaction times. It has been particularly useful in cyclic peptide synthesisPhosphonium coupling reagent for peptide synthesis. Useful in difficult couplings. CAS No: 56602-33-6. Molecular Formula: C 12H 22F ....
* BOP-Cl (Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium chloride): This reagent is also a potent coupling agent and has shown effectiveness in acylation reactions, including those involving N-methyl amino acids, often providing good yields with low epimerization.
These variations and related reagents demonstrate the ongoing innovation in peptide chemistry, with each offering slightly different properties that may be advantageous depending on the specific synthesis requirements. The choice between BOP, PyBOP, or other reagents often depends on factors such as the specific amino acids being coupled, the desired reaction conditions, and the need to minimize particular side reactions.
The mechanism of BOP-mediated coupling involves the activation of the carboxylic acid through the formation of reactive intermediates, ultimately leading to the desired amide bond. While the BOP reagent is highly effective, it is important to be aware of potential by-products and handling precautions. The hexafluorophosphate counterion, for instance, contributes to the reagent's stability and solubility. For optimal results and to avoid potential side reactions, careful control of reaction conditions, including pH and solvent choice, is often necessary. Understanding the BOP mechanism can help chemists troubleshoot synthesis issues and optimize protocols.
In conclusion, the BOP reagent remains a vital and highly regarded tool in the arsenal of peptide chemists. Its efficiency, ability to suppress racemization, and broad applicability in various synthesis strategies, especially in peptide synthesis and solid-phase methodologies, underscore its enduring importance in advancing peptide research and development.A new peptide coupling reagent devoid of toxic by-product
Join the newsletter to receive news, updates, new products and freebies in your inbox.