申请人:——
公开号:US20040044249A1
公开(公告)日:2004-03-04
The present invention relates to a new process for the synthesis of racemic and optically active bicalutamide starting from ethyl pyruvate and methyl methacrylate. The present invention discloses processes of preparing bicalutamide intermediates including ethyl-[2-{4-fluorophenyl sulfone}]-2-hydroxy propionate, 1,2-epoxy-2-methyl propionate and 2-hydrox-2-methyl-3-(4-fluorophenylthio) propionic acid. The present invention further discloses micronized rac-bicalutamide and the preparation thereof. The present invention further discloses a new process for the isolation and purification of racemic and optically active bicalutamide.
该发明涉及一种从乙酸乙酯和甲基丙烯酸甲酯合成外消旋和光学活性比卡鲁胺的新工艺。该发明揭示了制备比卡鲁胺中间体的过程,包括乙基-[2-4-氟苯基砜}-2-羟基丙酸酯、1,2-环氧-2-甲基丙酸酯和2-羟基-2-甲基-3-(4-氟苯硫基)丙酸。该发明还揭示了微粉化的外消旋比卡鲁胺及其制备方法。该发明还揭示了一种新的分离和纯化外消旋和光学活性比卡鲁胺的工艺。