The present invention provides an inexpensive and industrially advantageous method for producing an optically active form of an anti-(3S,4R)-3-alkylcarbamoyl-4-hydroxypyrrolidine derivative or it's enantiomer, which is a key intermediate for producing a high-quality optically active form of (3R,4S)-3-alkylaminomethyl-4-fluoropyrrolidine or it's enantiomer useful as an intermediate for producing pharmaceuticals.
The present invention relates to a method for producing an optically active anti-(3S,4R)-4-hydroxypyrrolidine-3-carboxamide derivative, or it's enantiomer by carrying out asymmetric hydrogenation using an optically active catalyst of a 4-oxopyrrolidine-3-carboxamide derivative represented by the general formula (I).
[in the formula (I), PG1 represents a protective group for an amino group, and R1 represents hydrogen, a C1 to C6 alkyl group which may be substituted, or a C3 to C8 cycloalkyl group which may be substituted].
本发明提供了一种廉价且具有工业优势的方法,用于生产抗(3S,4R)-3-烷基
氨甲酰基-
4-羟基
吡咯烷衍
生物或其对映体的光学活性形式,该衍
生物是生产高质量的(3R,4S)-3-烷基
氨甲基-4-
氟吡咯烷或其对映体有用的中间体。本发明涉及一种通过使用由一般式(I)表示的4-氧代
吡咯烷-3-羧酰胺衍
生物的光学活性催化剂进行不对称氢化来生产光学活性的抗(3S,4R)-
4-羟基
吡咯烷-3-羧酰胺衍
生物或其对映体的方法。[在式(I)中,
PG1代表
氨基的保护基,R1代表氢,可能被取代的C1至C6烷基,或可能被取代的C3至C8环烷基。]