Cyclization of the Acyl Glucuronide Metabolite of a Neutral Endopeptidase Inhibitor to an Electrophilic Glutarimide: Synthesis, Reactivity, and Mechanistic Analysis
作者:Xiaoli Meng、James L. Maggs、David C. Pryde、Simon Planken、Rosalind E. Jenkins、Torren M. Peakman、Kevin Beaumont、Christopher Kohl、B. Kevin Park、Andrew V. Stachulski
DOI:10.1021/jm0706766
日期:2007.11.1
unstable thioesters. Imide 4 acylated eight lysine Nepsilon-amino groups of human serum albumin. Rapid cyclization of 3 was attributed to attack on the ester linkage by an unusually nucleophilic glutaramide NH (pKa in 2 = 9.76). N-propyl 3 was refractory to acylmigration and cyclization. This suggested a synthetic strategy for preparing analogues of 2 that form chemically stable acyl glucuronides.