Preparation of 2',3'-didehydro-3'-deoxythymidine from 5-methyluridine
申请人:Bristol-Myers Squibb Co.
公开号:US05672698A1
公开(公告)日:1997-09-30
An economical process, amenable to large-scale production, is disclosed for the preparation of 2',3'-didehydro-3'-deoxythymidine (d4T) from 5-methyluridine. The process employs a novel, 5'-,acyl-2'.alpha.-halo-3'.alpha.-alkanesulfonylthymidine intermediate as well as a highly efficient and practical deprotection, isolation and purification procedure for the d4T product.
The present invention concerns an improved process of making d4T from 5-MU. Another aspect of the invention relates to useful intermediates produced during the process.