Synthesis of novel 5‐chlorinated 2‐aminothiophenes using 2,5‐dimethylpyrrole as an amine protecting group
作者:Zita Puterová、Tomáš Bobula、Daniel Végh
DOI:10.1002/jhet.5570450124
日期:2008.1
free positions of 2,5-dimethylpyrrole were substituted. To direct chlorination to the thiophene ring acetamido derivative was prepared first and then chlorinated. Transamination with hexane-2,5-dione created a 2,5-dimethyl pyrrole ring from the acetamido group. In the final step, after treatment with hydroxylamine dihydrochloride, the pyrrole ring is removed and a free amino group is regenerated.
[EN] POLYCYCLIC COMPOUNDS FOR INHIBITING RNA HELICASE DHX33 AND USE THEREOF<br/>[FR] COMPOSÉS POLYCYCLIQUES POUR INHIBER L'ARN HÉLICASE DHX33 ET LEUR UTILISATION<br/>[ZH] 一类抑制RNA解旋酶DHX33的多环化合物及其应用
申请人:[en]SHENZHEN KEYE LIFE TECHNOLOGIES, CO., LTD;[zh]深圳开悦生命科技有限公司
The present invention relates to the use of certain 4-substituted pyrimidine derivatives as mGluR1 antagonists, to novel 4-substituted pyrimidine derivatives, to pharmaceutical formulations comprising 4-substituted pyrimidine derivatives, to a process for preparing 4-substituted pyrimidine derivatives and to intermediates useful in the preparation of 4-substituted pyrimidine derivatives.