申请人:Bristol-Myers Company
公开号:US04692538A1
公开(公告)日:1987-09-08
New and more efficient chemical processes are provided for preparing (.alpha.S, 5S)-.alpha.-amino-3-chloro-2-isoxazoline-5-acetic acid (AT-125), (.alpha.S, 5S)-.alpha.-amino-3-bromo-2-isoxazoline-5-acetic acid (bromo AT-125) and the C-5 epimers thereof. The disclosed processes allow the above-mentioned antitumor agents to be produced in high yield and purity with substantially fewer steps than prior art chemical procedures.
提供了用于制备(.alpha.S, 5S)-.alpha.-氨基-3-氯-2-异噁唑啉-5-乙酸(AT-125)、(.alpha.S, 5S)-.alpha.-氨基-3-溴-2-异噁唑啉-5-乙酸(溴化AT-125)及其C-5对映体的新型更高效的化学过程。所披露的方法使得上述抗肿瘤药物能够以高产率和纯度生产,且比先前的化学程序步骤更少。