英语语法分析

Methods:Bicalutamide was prepared from 4-cyano-3-(trifluoromethyl) aniline and 2-methylacryloyl chloride by four steps: acylation, cyclization, substitution, and oxidization.

方法：以3-三氟甲基- 4- 氰基苯胺和2- 甲基丙烯酰氯为起始原料经过酰化、 环氧化、取代和氧化四步反应合成比卡鲁胺。