The present invention discloses a process which comprises selectively hydrolyzing one enantiomer of racemic mixtures of an N-substituted β-amino acid alkyl ester or N-substituted 2-homopipecolic acid ester represented by the formula (I):
wherein Ar, R1, R2, R3, R4 and R5 are the same as defined in the specification,
in the presence of a hydrolase to form an optically active ((R) or (S))—N-substituted β-amino acid or optically active ((R) or (S))—N-substituted 2-homopipecolic acid represented by the formula (II):
and simultaneously to obtain an unreacted optically active ((S) or (R))—N-substituted β-amino acid alkyl ester or unreacted optically active ((S) or (R))—N-substituted 2-homopipecolic acid ester represented by the formula (III):
which has a reverse steric absolute configuration to that of the compound represented by the formula (II).
本发明揭示了一种过程,该过程包括在
水解酶的存在下,有选择地
水解由公式(I)表示的N-取代β-
氨基酸烷基酯或N-取代2-同环丙
氨酸酯的混合物的一个对映体,其中Ar,R1,R2,R3,R4和R5的定义与说明书中定义的相同,以形成光学活性((R)或(S))-N-取代β-
氨基酸或光学活性((R)或(S))-N-取代2-同环丙
氨酸,其由公式(II)表示:同时获得未反应的光学活性((S)或(R))-N-取代β-
氨基酸烷基酯或未反应的光学活性((S)或(R))-N-取代2-同环丙
氨酸酯,其由公式(III)表示:该化合物的空间构型与由公式(II)表示的化合物的相反。