申请人:Yeda Research and Development Co. Ltd.
公开号:US04244885A1
公开(公告)日:1981-01-13
.alpha.-Substituted-3-(halomethyl)-4-hydroxybenzeneacetic acids, prepared by the halomethylation of .alpha.-substituted-4-hydroxybenzeneacetic acids are new and useful as starting materials for the preparation of cephalosporin and penicillin derivatives.
α-取代-3-(卤甲基)-
4-羟基
苯乙酸,通过对α-取代-
4-羟基
苯乙酸进行卤甲基化制备,作为
头孢菌素和
青霉素衍
生物的制备起始物是新的且有用的。