Synthesis and structural characterization of amino acid and peptide derivatives featuring N-(p-bromobenzoyl) substituents as promising connection unit for bio-inspired hybrid compounds
作者:Frank Eißmann、Edwin Weber
DOI:10.1016/j.molstruc.2011.03.058
日期:2011.5
Abstract Using a sequence of activation, blocking and peptide coupling procedures, a series of ten amino acid and peptide derivatives 1–6 (a, b, respectively) featuring a p-bromobenzoyl substituent attached to the amino group of the parent compound has been synthesized. X-ray crystal structures of two corresponding amino acid (1a, 1b), two amino acid ester (3a, 3b) and three peptide ester derivatives
摘要 使用一系列活化、封闭和肽偶联程序,合成了一系列十种氨基酸和肽衍生物 1-6(分别为 a、b),其特征是在母体化合物的氨基上有一个对溴苯甲酰基取代基。 . 报道了两种相应氨基酸(1a, 1b)、两种氨基酸酯(3a, 3b)和三种肽酯衍生物(4a, 4b, 5b)的X射线晶体结构,分子的酰胺和肽键均平面和反式配置。分子内相互作用主导着包装基序,从而导致形成链(1a、3a、3b、4a、4b)、分子对(1b)或片层(5b)源自 N-H⋯O 接触,进一步辅助O-H⋯O 和较弱的 C-H⋯O 相互作用,而涉及溴的接触是次要的。