Long-Range Chemical Ligation from N→N Acyl Migrations in Tryptophan Peptides via Cyclic Transition States of 10- to 18-Members
作者:Suvendu Biswas、Roger Kayaleh、Girinath G. Pillai、Christopher Seon、Ian Roberts、Vadim Popov、Khalid A. Alamry、Alan R. Katritzky
DOI:10.1002/chem.201400125
日期:2014.6.23
Chemical ligations to form native peptides from N→N acyl migrations in Trp‐containing peptides via 10‐ to 18‐membered cyclic transition states are described. In this study, a statistical, predictive model that uses an extensive synthetic and computational approach to rationalize the chemical ligation is reported. N→N acyl migrations that form longer native peptides without the use of Cys/Ser/Tyr residues
描述了化学连接以10到18元环状过渡态从含Trp的肽中的N→N酰基迁移形成天然肽的过程。在这项研究中,报告了一种统计,预测模型,该模型使用了广泛的合成和计算方法来使化学连接合理化。在连接位点处不使用Cys / Ser / Tyr残基或辅助基团的情况下,实现了形成较长天然肽的N→N酰基迁移。这些无痕迹化学连接反应的可行性通过N支持在C键距离Ñ酰基isopeptides。通过使用竞争性实验和理论计算,证明了化学连接的分子内性质是合理的。