The present invention is to provide an n-alkyl 3-amino-3-arylpropionate represented by the formula (I):
wherein Ar1 represents an aryl group which may have a substituent(s), provided that a phenyl group and 4-methoxyphenyl group are excluded, R1 represents an n-propyl group or an n-butyl group,
and a process for preparing the same, and its optically active compound and an optically active (S or R)-3-amino-3-arylpropionic acid represented by the formula (III-a):
wherein Ar represents an aryl group which may have a substituent(s), and * represents an asymmetric carbon,
and a process for preparing an optically active n-alkyl (R or S)-3-amino-3-arylpropionate represented by the formula (IV-a):
wherein Ar and R1 have the same meanings as defined above, * represents an asymmetric carbon, provided that it has a reverse absolute configuration to the compound of the formula (III-a).
本发明旨在提供一种由式(I)代表的 3-
氨基-3-芳基
丙酸正烷基
酯:
其中 Ar1 代表芳基,该芳基可以具有取代基,但不包括
苯基和 4-
甲氧基苯基,R1 代表正丙基或正丁基、
及其光学活性化合物和由式(III-a)表示的光学活性(S 或 R)-3-
氨基-3-芳基
丙酸的制备方法:
其中 Ar 代表芳基,该芳基可能具有取代基,* 代表不对称
碳、
以及一种制备由式(IV-a)代表的光学活性正烷基(R 或 S)-3-
氨基-3-芳基
丙酸酯的工艺:
其中 Ar 和 R1 的含义与上述定义相同,* 代表不对称
碳,条件是其绝对构型与式 (III-a) 化合物相反。