描述了一种非常方便和有效的协议,用于迭代溶液相合成较短的对和间芳肽类低聚物。研究了用于获得更长寡聚体的肽偶联方法:发现使用新偶联试剂 COMU 最有效地创建叔苯甲酰胺键。通过核磁共振研究了芳肽骨架的顺/反异构现象,发现它高度依赖于侧链的性质。增加侧链的体积有利于顺式酰胺键构象;具有叔丁基侧链的芳肽类仅含有顺式酰胺键。
描述了一种非常方便和有效的协议,用于迭代溶液相合成较短的对和间芳肽类低聚物。研究了用于获得更长寡聚体的肽偶联方法:发现使用新偶联试剂 COMU 最有效地创建叔苯甲酰胺键。通过核磁共振研究了芳肽骨架的顺/反异构现象,发现它高度依赖于侧链的性质。增加侧链的体积有利于顺式酰胺键构象;具有叔丁基侧链的芳肽类仅含有顺式酰胺键。
Improved solid-phase synthesis and study of arylopeptoids with conformation-directing side chains
作者:Thomas Hjelmgaard、Sophie Faure、Emiliana De Santis、Dan Staerk、Bruce D. Alexander、Alison A. Edwards、Claude Taillefumier、John Nielsen
DOI:10.1016/j.tet.2011.12.049
日期:2012.6
The development of an improved methodology for iterative solid-phase synthesis of para- and meta-arylopeptoids (oligomeric N-substituted aminomethyl benzamides) using benzoyl chloride building blocks is described. This methodology has enabled the synthesis of arylopeptoids with tert-butyl and phenyl sidechains, which allows for complete control over the amide conformation: the tert-butyl results in
The development of a highly efficient methodology for solid-phase synthesis of para- and meta-arylopeptoids (oligomeric N-substituted aminomethyl benzamides) with free acids or free amides at the C-terminus is described. The arylopeptoids were synthesised by means of a convenient submonomer protocol in which the arylopeptoid residues were created in an iterative manner on the growing chain using an