Process for preparing 4-mercaptopyrrolidine compound
申请人:TANABE SEIYAKU CO., LTD.
公开号:EP0713866A1
公开(公告)日:1996-05-29
An improved process for preparing a 4-mercaptopyrrolidine compound [I]:
wherein R is H, lower alkyl or lower alkanoyl, R¹ is H or SH-protecting group, and X is O or S, which comprises reacting halogenobutyric acid compound [VI], or a salt thereof, with amine compound [VII], or a salt thereof, and if necessary, followed by thiocarbonylating the product and/or removing the protecting group, said 4-mercaptopyrrolidine compound [I] being useful as intermediate for carbapenem antibacterial agents.
制备 4-巯基吡咯烷化合物的改进工艺 [I]:
其中 R 是 H、低级烷基或低级烷酰基,R¹ 是 H 或 SH 保护基,X 是 O 或 S,该工艺包括卤代丁酸化合物[VI]或其盐与胺化合物[VII]或其盐反应,必要时对产物进行硫代羰基化和/或去除保护基,所述 4-巯基吡咯烷化合物[I]可用作碳青霉烯类抗菌剂的中间体。
US5629419A
申请人:——
公开号:US5629419A
公开(公告)日:1997-05-13
Practical Synthesis of (<i>R</i>)-4-Mercaptopyrrolidine-2-thione from <scp>l</scp>-Aspartic Acid. Preparation of a Novel Orally Active 1-β-Methylcarbapenem, TA-949
作者:Masahiko Seki、Takeshi Yamanaka、Kazuhiko Kondo
DOI:10.1021/jo991461+
日期:2000.1.1
High-yield amination and cyclization of the chloride 15 to the pyrrolidin-2-one 16 was accomplished by a simple treatment with ammonia. Thiation of 16 and the Birch reduction of the resultant thiolactam 18 provided the C-2 sidechain 2 in high yield with the asymmetric center retained as such. The sidechain 2 was installed into the 1-beta-methylcarbapenem skeleton either by coupling with the vinyl phosphate