Provided is a method for synthesizing an optically active compound represented by the formula (1)
wherein R is an aryl optionally having substituent(s) or a heteroaryl optionally having substituent(s), and a carbon atom marked with * is an asymmetric carbon atom; which comprises synthesizing an optically active morpholine compound represented by the formula 10' which in turn comprises the following steps:
wherein R is an aryl optionally having substituents(s) or a heteroaryl optionally having substituent(s), R1 is a C1-C6 alkyl, an aralkyl optionally having substituent(s) or a C2-C6 alkenyl, R2 is a C1-C6 alkyl, a C1-C6 haloalkyl, an aryl optionally having substituent(s) or a benzyl optionally having substituent(s) and X2 is a halogen; reacting a compound of the formula 5' with an activated chloroacetic acid or bromoacetic acid in a solvent to give a compound of the formula 6', reacting the compound of the formula 6' with a base to give a compound of the formula 7', reacting the compound of the formula 7' with a reducing agent in a solvent to give a compound of the formula 8', reacting the compound of the formula 8' with a chloroformate to give a compound of the formula 9' and
subjecting the compound of the formula 9' to hydrolysis to give the compound of the formula 10'.
提供了一种合成由式(1)表示的光学活性化合物的方法
其中 R 是可选具有取代基的芳基或可选具有取代基的杂芳基,标有 * 的
碳原子是不对称
碳原子;该方法包括合成由式 10'代表的具有光学活性的
吗啉化合物,该方法又包括以下步骤:
其中 R 是任选具有取代基的芳基或任选具有取代基的杂芳基,R1 是 C1-C6 烷基、任选具有取代基的芳烷基或 C2-C6
烯基,R2 是 C1-C6 烷基、C1-C6 卤代烷基、任选具有取代基的芳基或任选具有取代基的
苄基,X2 是卤素;将式 5'化合物与活化的
氯乙酸或
溴乙酸在溶剂中反应,得到式 6'化合物,将式 6'化合物与碱反应,得到式 7'化合物,将式 7'化合物与还原剂在溶剂中反应,得到式 8'化合物,将式 8'化合物与
氯甲酸酯反应,得到式 9'化合物,以及
将式 9'化合物进行
水解,得到式 10'化合物。