Synthesis and Biological Activity of <i>N</i>-Sulfonylphosphoramidates: Probing the Electrostatic Preferences of Alkaline Phosphatase
作者:Benjamin T. Burlingham、Theodore S. Widlanski
DOI:10.1021/jo010495q
日期:2001.11.1
stability toward hydrolysis, were determined. Inhibition data suggests that AP does not bind trianionic N-sulfonylphosphoramidates better than dianionic N-sulfonylphosphoramidates, although N-sulfonylphosphoramidates are bound tighter than N-phenylphosphoramidate. k(cat) for the hydrolysis of N-sulfonylphosphoramidates by bovine and E. coli alkaline phosphatases is 10-60% that of p-nitrophenyl phosphate
已经合成了N-磺酰基磷酸氨基化物,以研究与碱性磷酸酶结合的静电要求。烷基和芳基N-苄基磺酰胺用溴磷酸盐磷酸化,或通过亚磷酰胺化学合成,产率适中(44-77%)。所得的三苄基N-磺酰基磷酰胺化物可一步脱保护,以定量产率得到游离酸。测定了N-磺酰基磷酰胺化物的物理数据,包括pK(a)和对水解的稳定性。抑制数据表明,尽管N-磺酰基磷酸氨基化物比N-苯基磷酸氨基甲酸酯更牢固地结合,但AP的结合性不比双阴离子N-磺酰基磷酸氨基化物更好地结合三阴离子N-磺酰基磷酸氨基化物。k(cat)用于牛和E水解N-磺酰基磷酸氨基化物