作者:Lawrence A. Reiter、Brian P. Jones
DOI:10.1021/jo962275w
日期:1997.5.1
inhibit metalloproteases. The hydrolysis of a phosphinic acid ester is typically one of the final steps in the synthesis of such inhibitors. We have found that the acid-catalyzed hydrolysis of a phosphinic acid ester containing a beta-carboxamido group is facilitated by the presence of the amide. The promotion of the hydrolysis is dependent on the electron density of the amide suggesting the intermediacy
膦酸由于其抑制金属蛋白酶的能力而受到关注。次膦酸酯的水解通常是这类抑制剂合成中的最终步骤之一。我们发现,酰胺的存在促进了含有β-羧酰胺基的次膦酸酯的酸催化水解。水解的促进取决于酰胺的电子密度,表明环亚氨酸酯结构(C)的中间性。通过用10:90 H(2)O:TFA处理酯,可方便且定量地实现含有β-羧酰胺基的次膦酸酯的水解。