An optically active amino acid derivative is produced by N-protecting an optically active 3-haloalanine derivative followed by cyclization, or cyclizing this derivative followed by N-protection to thereby give an optically active N-protected-aziridine-2-carboxylic acid derivative which is protected by a benzenesulfonyl group substituted by nitro at the 2- and/or 4-positions and then treating this product with an organic metal reagent, or by N-protecting an optically active 3-haloalanine derivative to thereby give N-protected-aziridine-2-carboxylic acid which is protected by a benzenesulfonyl group substituted by nitro at the 2- and/or 4-positions and then treating this product with an organic metal reagent.
According to this process, natural and unnatural optically active amino acids can be produced from inexpensive materials by using simple procedures.
通过对具有光学活性的3-卤丙
氨酸衍
生物进行N-保护,然后进行环化,或者对该衍
生物进行环化,然后进行N-保护,从而得到一种具有光学活性的N-保护-环氧
丙烯酸衍
生物,该衍
生物由在2-和/或4-位置取代的硝基的苯磺酰基保护,然后用有机
金属试剂处理,或者通过对具有光学活性的3-卤丙
氨酸衍
生物进行N-保护,从而得到由在2-和/或4-位置取代硝基的苯磺酰基保护的N-保护-环氧
丙烯酸,然后用有机
金属试剂处理。根据这个过程,可以通过简单的程序从廉价原料中生产天然和非天然的光学活性
氨基酸。