申请人:ナプロ バイオセラピューティクス,インコーポレイテッド
公开号:JP2005507859A
公开(公告)日:2005-03-24
The solution containing the optical isomer is treated to give the (2R, 3S) target isomer where P 1 is H or a hydroxyl protecting group and R 1 is H, an alkyl group, an olefinic group or an aromatic group. R 2 is H or R 3 CO (wherein R 3 is an alkyl group, olefinic group, aromatic group, O-alkyl group, O-olefinic group or O-aromatic group), However, when R 3 is Ph and P 1 is H, R 1 is not H). This method involves passing the solution through a chromatographic stationary phase, such as S, S Whelk-O, which has greater affinity for the target isomer and one of its optical isomers. The portion of the solution containing the target isomer is then recovered. The solution may be a racemic mixture of (±) -N-CBZ-3-phenylisoserine ethyl ester.
含有光学异构体的溶液经处理,得到(2R, 3S)目标异构体,其中P1为H或羟基保护基,R1为H、烷基、烯基或芳基。R2为H或R3CO(其中R3为烷基、烯基、芳基、O-烷基、O-烯基或O-芳基),但当R3为Ph且P1为H时,R1不为H。该方法涉及将溶液通过色谱固定相(如S、S Whelk-O)进行处理,固定相对目标异构体及其一个光学异构体具有更高的亲和力。然后回收含有目标异构体的部分溶液。该溶液可能是(±)-N-CBZ-3-苯基异丝氨酸乙酯的混合物。