The invention relates to a novel compound (2R, 3R)-2 -hydroxy-3amino-3-aryl-propionamide according to formula (1), wherein aryl A represents a substituted or unsubstituted aromatic ring, and to a process for the preparation of said compound of formula (1), wherein a reaction mixture comprising the two enantiomers (2R,3S) and (2S,3R) of trans-3-aryl glycidic acid alkyl ester and the two enantiomers (2R,3R) and (2S,3S) of cis-3-aryl glycidic acid alkyl ester, said mixture being enantiomerically and diastereomerically enriched in the (2R,3S)-trans-3-arylglycidic acid alkyl ester, is reacted with ammonia. The invention further relates to a process for the preparation of (2R,3R)-2-hydroxy-3 amino-3-aryl-propionic alkyl ester.
本发明涉及一种新型化合物(2R,3R)-2-羟基-3-
氨基-3-芳基-丙酰胺,其
化学式为(1),其中芳基A代表取代或未取代的芳环,并且涉及一种制备上述化合物的方法,其中反应混合物包括两个对映异构体(2R,3S)和(2S,3R)的反式-3-芳基环氧
乙酸烷基酯和两个对映异构体(2R,3R)和(2S,3S)的顺式-3-芳基环氧
乙酸烷基酯,该混合物在对(2R,3S)-反式-3-芳基环氧
乙酸烷基酯进行对映异构和对映异构富集后,与
氨反应制备。本发明还涉及一种制备(2R,3R)-2-羟基-3-
氨基-3-芳基-
丙酸烷基酯的方法。