申请人:Pharm-Eco Laboratories, Inc.
公开号:US06462221B1
公开(公告)日:2002-10-08
The present invention relates to a method of preparing a 1-nitro-3-substituted-3-amino-2-propanol diastereomer represented by Structural Formula I:
In Structural Formula I, R is an amine protecting group, and R1 is an amino acid side-chain, a protected amino acid side-chain, a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aromatic group, a substituted or unsubstituted heteroaromatic group, a substituted or unsubstituted aralkyl or a substituted or unsubstituted heteroaralkyl group. The method involves contacting a 1-nitro-3-substituted-3-amino-2-propanone with a reducing agent to form a mixture of 1-nitro-3-substituted-3-amino-2-propanol diastereomers. The 1-nitro-3-substituted-3-amino-2-propanol diastereomers are then separated by simulated moving bed chromatography to obtain one or more 1-nitro-3-substituted-3-amino-2-propanol diastereomer.
本发明涉及一种制备1-硝基-3-取代-3-氨基-2-丙醇对映体的方法,其结构式为I:在结构式I中,R是氨基保护基,R1是氨基酸侧链,受保护的氨基酸侧链,取代或未取代的脂肪基,取代或未取代的芳香基,取代或未取代的杂芳基,取代或未取代的芳基烷基或取代或未取代的杂芳基烷基。该方法涉及将1-硝基-3-取代-3-氨基-2-丙酮与还原剂接触以形成1-硝基-3-取代-3-氨基-2-丙醇对映体混合物。然后,通过模拟移动床色谱法分离1-硝基-3-取代-3-氨基-2-丙醇对映体以获得一个或多个1-硝基-3-取代-3-氨基-2-丙醇对映体。