A process for the preparation of chloromethyl esters of penicillanic acids, using iodochloromethane or bromochloromethane and a tetraalkylammonium salt of the penicillanic acid, and their use in processes for the synthesis of penicillanic acid esters, using a halomethyl ester and the tetraalkylammonium salt of the penicillanic acid, which readily hydrolyze in vivo to antibacterial penicillins and the beta-lactamase inhibitor penicillanic acid sulfone.
一种利用
碘氯甲烷或
溴氯甲烷和青霉烷酸的四烷基
铵盐制备青霉烷酸
氯甲酯的工艺,及其在利用卤代甲酯和青霉烷酸的四烷基
铵盐合成青霉烷酸酯工艺中的应用,这种青霉烷酸酯在体内容易
水解为抗菌青霉烷酸酯和β-内酰胺酶抑制剂青霉烷酸砜。