申请人:Suzuki Masashi
公开号:US20130085282A1
公开(公告)日:2013-04-04
An inexpensive and industrially advantageous method for producing optically active syn-3-(N-substituted-aminomethyl)-4-fluoropyrrolidine which may be an intermediate for producing pharmaceuticals is provided. The present invention relates a method for producing a syn-1-protected-4-fluoro-3-(N-substituted-N-nitrobenzenesulfonyl)pyrrolidine derivative or it's enantiomer, or their salts comprising the process of fluorinating a compound represented by the general formula (6) (in the formula, PG
1
represents a protecting group for an amino group, R
1
represents a C1 to C6 alkyl group which may be substituted or a C3 to C8 cycloalkyl group which may be substituted, and Ns represents a 2-nitrobenzenesulfonyl group or a 4-nitrobenzenesulfonyl group) or it's enantiomer using a nucleophilic fluorinating agent and an organic base having an amidine or guanidine structure.
提供了一种廉价且工业上优势的方法,用于生产光学活性的syn-3-(N-取代氨甲基)-4-氟吡咯烷,该化合物可能是生产药物的中间体。本发明涉及一种生产syn-1-保护的-4-氟-3-(N-取代-N-硝基苯磺酰基)吡咯烷衍生物或其对映体或其盐的方法,包括将通式(6)所代表的化合物(其中,PG1代表氨基的保护基,R1代表可取代的C1到C6烷基或可取代的C3到C8环烷基,Ns代表2-硝基苯磺酰基或4-硝基苯磺酰基)或其对映体使用亲核氟化试剂和具有酰胺或鸟嘌呤结构的有机碱进行氟化的过程。