Cefetamet pivoxil was synthesized from chloromethyl pivalate and 7?ADCA. 7?氨基?3?甲基?3?头孢烯?4?羧酸； 头孢他美；
The method for converting penicillin G to 7 amino deacetoxycephalosporanic acid(7 ADCA) was reviewed. 综述了以青霉素 G钾盐为原料 ,制备 7-氨基去乙酰氧基头孢烷酸 ( 7-ADCA)的方法。
It is also caused by mutations in genes associated with autosomal dominant cerebellar ataxia (ADCA), notably CAG/CAA repeat expansions in SCA2. 它还可能由常染色体显性遗传性小脑性共济失调相关基因突变引起，尤其是SCA2中的CAG/CAA重复扩增。
The recent scale and progress of ADCA production, two - step synthetic route and uses in five main fields are presented. 介绍ADCA目前的生产规模和进展、两步法合成路线及5大方面的应用.
In contrast, similar-sized but uninterrupted repeats were associated with ADCA in which cerebellar ataxia was constant and associated only rarely with one or more mild parkinsonian signs. 与之相反，大小类似但未阻断重复与ADCA相关，这些患者小脑性共济失调持续存在而且只与一个或多个中等帕金森体征相关。
The mechanism of the ring enlarging reaction,sorts of ring enlarging catalysts and several preparative methods of converting 7 (phenylacetamido) deacetoxycephalosporin acid to 7 ADCA were summarised. 总结了扩环反应的反应机理、扩环催化剂的种类及由头孢烷酸转化成7-ADCA的方法。