In view of developing alternatives to classical peptidesynthesis strategies that suffer from low efficacy and negative environmental impact, the reactivity of N-protected α-amino acids, amino esters, and N-ethyl-N′-(3-dimethylaminopropyl)carbodiimide was studied under liquid-assisted grinding (LAG) conditions. The optimal reaction conditions enabled the intensive and environmentally benign mechanosynthesis
Peptides were produced in high yields and, if any, very low epimerization, by mechanochemical coupling of peptide fragments containing highly epimerization-prone and/or highly hindered amino acids at C-term. Ball milling was clearly identified as the key element enabling one to obtain such results.
通过在 C 端含有高度差向异构化和/或高度受阻氨基酸的肽片段的机械化学偶联,以高产率和(如果有的话)非常低的差向异构化产生肽。球磨被清楚地确定为获得这种结果的关键因素。
Liquid-phase Peptide Synthesis by Fragment Condensation on a Soluble Polymer Support. III. The Influence of the Content and the Chain Length of a Peptide Anchored to a Soluble Polymer Support on the Reactivity of the Amino-free Terminal of the Peptide
investigate the influence of the content and the chain length of a peptide anchored to a soluble polymer support on the reactivity of the amino-free terminal of the peptide, chloromethylated polystyrene, which is a starting material for peptidesynthesis on a matrix, was prepared by the copolymerization of (chloromethyl)styrene with styrene. By the copolymerization, the chloromethyl content on the resin
为了研究锚定在可溶性聚合物载体上的肽的含量和链长对肽无氨基末端反应性的影响,氯甲基化聚苯乙烯是在基质上合成肽的起始材料,由(氯甲基)苯乙烯与苯乙烯共聚而成。通过共聚,树脂上的氯甲基含量易于控制并且可再现。五肽-(Ala2-Leu3)- 和十肽-(Ala2-Leu3-Pro2-Leu3)- 的重复肽链延伸通过常规方法进行,使用具有不同 Ile 含量的可溶性聚合物载体–Ile,用作内部参考,通过对所得肽树脂的氨基酸分析来评估偶联产率。