作者:Victor P. Krasnov、Irina A. Nizova、Alexey Yu. Vigorov、Tatyana V. Matveeva、Galina L. Levit、Pavel A. Slepukhin、Marina A. Ezhikova、Mikhail I. Kodess
DOI:10.1002/ejoc.200701154
日期:2008.4
On the basis of the results obtained from NMR spectroscopy, X-ray analysis and chemical transformations, it was established that acidic hydrolysis of (2S,4S)-4-arylaminoglutamates results in the formation of lactams in which ring closure occurs with the participation of the γ-amino and α-COOH groups; but isomeric lactams resulting from the participation of the α-amino and γ-COOH groups are not formed
根据核磁共振光谱、X 射线分析和化学转化的结果,确定 (2S,4S)-4-芳基氨基谷氨酸的酸性水解导致形成内酰胺,其中环闭合发生在γ-氨基和α-COOH基团;但是没有形成由α-氨基和γ-COOH基团参与产生的异构内酰胺。异构内酰胺,即 (2S,4S)-4-arylamino-5-oxoprolines,可以很容易地在酸性介质中转化为更稳定的 4-amino-1-aryl-5-oxoprolines。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)