.alpha.-Halo [(phenylphosphinyl)methyl]phosphonates as specific inhibitors of Na+-gradient-dependent Na+-phosphate cotransport across renal brush border membrane
作者:Charles E. McKenna、Pham Phuong Truc T.、Mark E. Rassier、Thomas P. Dousa
DOI:10.1021/jm00104a015
日期:1992.12
incorporating structurally versatile aryl functionality were inactive. In this work, a series of novel alpha-halogenated [(phenylphosphinyl)methyl]phosphonates [PhpXYMP: X, Y = H, F (2); F, F (3); H, Cl (6); Cl, Cl (4); H, Br (7); Br, Br (5); and Cl, Br (8)] were prepared via synthesis of the corresponding triethyl esters, acid hydrolysis, and isolation as pyridine salts. The compounds were evaluated as
已知某些磷酸盐的磷酸膦酸酯类似物可以抑制Na(+)-磷酸(Pi)在肾刷缘膜(BBM)中的共转运,但先前测试过的潜在抑制剂结合了结构上通用的芳基官能团,因此没有活性。在这项工作中,一系列新型的α-卤代[(苯基膦基)甲基]膦酸酯[PhpXYMP:X,Y = H,F(2); F,F(3);H,Cl(6); Cl,Cl(4);H,Br(7);溴,溴(5); 和Cl,Br(8)]是通过合成相应的三乙酯,酸水解,并分离为吡啶盐而制备的。化合物被评估为大鼠肾皮质BBM囊泡(BBMV)在体外的Na(+)梯度依赖性32Pi摄取抑制剂。PhpFMP外消旋物2具有比该系列其他成员更高的活性(-49%δ抑制)(-22到-39%δ抑制)。pKa值为1.5-2.0、2.7和7。使用31Pδ与pH的关系图估计了1的2,表明在活性分析中,它既以二价阴离子和三价阴离子的形式存在,又以三价阴离子的形式存在。在相同的BBMV中