Building Functionalized Peptidomimetics: New Electroauxiliaries and the Use of a Chemical Oxidant for Introducing <i>N</i>-Acyliminium Ions into Peptides
作者:Haizhou Sun、Kevin D. Moeller
DOI:10.1021/ol034872s
日期:2003.9.1
[reaction: see text] The removal of electroauxiliaries from peptide substrates with chemical oxidants has been examined as a method for inserting N-acyliminium ions into the peptides. To this end, it was found that both 4-methoxyphenyldimethylsilyl and 2,4-dimethoxyphenyldimethylsilyl electroauxiliaries were readily cleaved with the use of ceric ammonium nitrate. Of the two groups, the 2,4-dimetho
[反应:见正文]作为将N-酰基亚胺离子插入肽中的方法,已经研究了用化学氧化剂从肽底物上去除电助剂的方法。为此,发现使用硝酸铈铵可容易地裂解4-甲氧基苯基二甲基甲硅烷基和2,4-二甲氧基苯基二甲基甲硅烷基电助剂。在两组中,2,4-二甲氧基苯基二甲基甲硅烷基电助剂在氧化条件下最不稳定。氧化反应被证明与固相底物的使用相容。