摘要
探索了一种合成PA-824的新方法:以2,4-二硝基咪唑(2)和缩水甘油丁酸酯(8)为原料发生亲核开环反应得到化合物(S)-1-(叔丁基二甲基硅氧基)-3-(2,4-二硝基-1H-咪唑-1-)丙-2-醇(9),然后用四氢-2H-吡喃(DHP)保护羟基,再经水解,合环,脱保护基,烷基化得到PA-824(1),总收率35%。
A new method to synthesis PA - 824 was introduced in this article. The initial step is the ring - opening of (S) - glyeidyl butyrate ( 8_ ) by 2,4 - dinitroimidazole ( 2_ ) to give the (S) - 3 - ( 2,4 - dinitro - 1 n - imidazol -1 -yl) -2- hydroxypropyl butyrate(9), followed protection by DHP, and then hydrolysis, cyclization, deprotection to give goal compound PA -824 (1) in 35% overall yield.
出处
《化工时刊》
CAS
2010年第4期32-34,51,共4页
Chemical Industry Times
关键词
PA-824
抗结核
合成
PA - 824 anti - tuberculosis synthesis