1-Acylsemicarbazides by Ring Opening of Iminodiaziridines with Carboxylic Acids: Novel, Expeditious Access to the Azapeptide Motif
作者:Helmut Quast、Edeltraud Schmitt、Karl-Heinz Ross
DOI:10.1055/s-0030-1257868
日期:2010.10
Carboxylic acids react rapidly and quantitatively with iminodiaziridines to afford 1,2,4-trisubstituted 1-acylsemicarbazides in a multistep sequence. In this way, a carboxy group is readily converted into an azapeptide motif. Broad signals in high-field ¹H and ¹³C NMR spectra recorded for the products are indicative of dynamic processes. azapeptides - heterocycles - hydrolysis - ring-opening - semicarbazides
羧酸与亚氨基二氮杂吡啶快速且定量地反应,以多步顺序提供1,2,4-三取代的1-酰基半氨基肼。以这种方式,羧基容易转化为氮杂肽基序。在高场宽信号¹ H和¹³ C NMR光谱记录为产品指示动态过程。 氮杂肽-杂环-水解-开环-氨基脲