申请人:Eli Lilly and Company
公开号:US05602262A1
公开(公告)日:1997-02-11
A process for producing intermediate compounds 2-deoxy 2,2-difluoro-.beta.-D-ribo-pentopyranose (III) from 3,3-difluoro-4,5,6-O-trihydroxy-5,6-O-(1-ethylpropylidene)hexene (I). The process of preparing intermediate compound (I) involves reacting D-glyceraldehyde pentanide with an organometallic complex of 3-bromo-3,3-difluoropropene. The process of preparing intermediate compound (III) involves ozonolysis and then hydrolysis. The intermediate compounds (I) and (III) are used in the preparation of 2'-deoxy-2',2'-difluorocytidine which is an antiviral agent.
从3,3-二氟-4,5,6-O-三羟基-5,6-O-(1-乙基丙烯基)己烯(I)生产中间化合物2-脱氧-2,2-二氟-β-D-核糖戊吡喃糖(III)的过程。制备中间化合物(I)的过程涉及D-甘油醛戊糖与3-溴-3,3-二氟丙烯的有机金属配合物发生反应。制备中间化合物(III)的过程涉及臭氧裂解然后水解。中间化合物(I)和(III)用于制备2'-脱氧-2',2'-二氟胞苷,这是一种抗病毒药物。