Evaluation of COMU as a coupling reagent for in situ neutralization Boc solid phase peptide synthesis
作者:Claudia U. Hjørringgaard、Andreas Brust、Paul F. Alewood
DOI:10.1002/psc.1438
日期:2012.3
Benzotriazole‐based coupling reagents have dominated the last two decades of solid phase peptide synthesis. However, a growing interest in synthesizing complex peptides has stimulated the search for more efficient and low‐cost coupling reagents, such as COMU which has been introduced as a nonexplosive alternative to the classic benzotriazole coupling reagents. Here, we present a comparative study of
最近二十年来,基于苯并三唑的偶联剂主导了固相肽合成。但是,对合成复杂肽的兴趣日益增长,促使人们寻求更高效,成本更低的偶联剂,例如COMU,它已作为经典的苯并三唑偶联剂的非爆炸性替代品引入。在这里,我们对原位中和Boc-SPPS中COMU与基于苯并三唑的HBTU和HCTU的偶联效率进行了比较研究。困难的序列,例如ACP(65-74),Jung-Redeman 10-mer和HIV-1 PR(81-99),被用作聚苯乙烯基树脂和聚乙二醇基树脂的模型靶肽。使用快速原位耦合获得的产量Boc-SPPS周期通过茚三酮定量测试以及粗裂解产物的LC-MS分析确定。我们的结果表明,当使用聚苯乙烯基树脂时,与HBTU和HCTU≥HBTU> COMU的HCTU相比,COMU的耦合效率更低。但是,当将PEG树脂与安全捕捉酰胺(SCAL)接头结合使用时,对于三种具有相同等级HCTU≥HBTU> COMU的偶联剂,观