PROCESS FOR THE PREPARATION OF 2-OXO-1-PYRROLIDINE DERIVATIVES
申请人:Surtees John
公开号:US20080009638A1
公开(公告)日:2008-01-10
The present invention relates to alternative processes for the preparation of 2-oxo-1-pyrrolidine derivatives of formula (I)
Particularly, the present invention relates to alternative processes for the synthesis of levetiracetam, brivaracetam and seletracetam.
2-Oxo-1-Pyrrolidine Derivatives, Processes For Preparing Them And Their Uses
申请人:Ates Célal
公开号:US20090318708A1
公开(公告)日:2009-12-24
The present invention relates to optically enriched or substantially optically pure 4-substituted-pyrrolidin-2-ones of formula (III), and their uses for the synthesis of 2-oxo-pyrrolidin-1-yl derivatives.
2-oxo-1-pyrrolidine derivatives, processes for preparing them and their uses
申请人:Ates Celal
公开号:US08957226B2
公开(公告)日:2015-02-17
The present invention relates to optically enriched or substantially optically pure 4-substituted-pyrrolidin-2-ones of formula (III), and their uses for the synthesis of 2-oxo-pyrrolidin-1-yl derivatives.
[EN] FLUOROACETATE DEHALOGENASE MUTANT AND APPLICATION THEREOF<br/>[FR] MUTANT DE FLUOROACETATE DÉSHALOGÉNASE ET APPLICATION ASSOCIÉE<br/>[ZH] 一种氟乙酸脱卤酶突变体及其应用
申请人:ABIOCHEM BIOTECHNOLOGY CO LTD
公开号:WO2021120134A1
公开(公告)日:2021-06-24
本发明公开了一种氟乙酸脱卤酶突变体,所述氟乙酸脱卤酶突变体的序列包括将SEQ ID NO:1所示的第155位氨基酸残基H、和/或第156位氨基酸残基W进行突变后的序列;所述氟乙酸脱卤酶突变体具有催化溴化底物、尤其是2-溴丁酸底物的活性。本发明还提供了一种所述氟乙酸脱卤酶突变体在制备(R)-2-溴丁酸和/或(R)-2-羟基丁酸中的应用。利用本发明的氟乙酸脱卤酶突变体制备(R)-2-溴丁酸时,生产成本低,立体选择性高,利于工业化生产。