Method for producing (+)
(2S,3S)-3-(2-aminophenylthio)-2-hydroxy-3(4'-methoxyphenyl)-propionic
acid
    9.
    发明授权
    Method for producing (+) (2S,3S)-3-(2-aminophenylthio)-2-hydroxy-3(4'-methoxyphenyl)-propionic acid 失效
    (+)(2S,3S)-3-(2-氨基苯硫基)-2-羟基-3(4'-甲氧基苯基) - 丙酸

    公开(公告)号:US6130352A

    公开(公告)日:2000-10-10

    申请号:US826004

    申请日:1997-03-27

    CPC classification number: C07C319/28 C07B2200/07

    Abstract: A process for the preparation of (+) (2S, 3S)-3-(2-aminophenylthio)-2-hydroxy-3-(4'-methoxyphenyl)-propionic acid which comprises treating the (.+-.) compound of (2RS, 3RS) 3-(2-aminophenylthio)-2-hydroxy-3-(4'-methoxyphenyl)-propionic acid (formula (II)) with the (+) compound of the 2-methylbenzylamine (formula (III)) and an alkali in the presence of a polar solvent, the amount of the compound of the formula (III) and the alkali being in half equivalent amount of compound of the formula (II) employed, separating the precipitate (+) amine salt form of (2-aminophenylthio)-2-hydroxy-3-(4'-methoxyphenyl)-propionic acid from the 1(-) salt form remaining in solution, by known methods treating the (+) amine salt from with an organic solvent and then decomposing the (+) amine salt form to produce (+)(2s, 3s)-3-(2-aminophenylthio)-2-hydroxy-3-(4'-methoxyphenyl)-propionic acid.

    Abstract translation: (+)(2S,3S)-3-(2-氨基苯硫基)-2-羟基-3-(4'-甲氧基苯基) - 丙酸的制备方法,其包括( 2RS,3RS)与2-甲基苄胺(式(III))的(+)化合物的3-(2-氨基苯硫基)-2-羟基-3-(4'-甲氧基苯基) - 丙酸(式(II) 和碱,在极性溶剂的存在下,式(III)化合物和碱的量为半量的式(II)化合物的用量,分离出沉淀(+)胺盐形式 (2-氨基苯硫基)-2-羟基-3-(4'-甲氧基苯基) - 丙酸从溶液中残留的1( - )盐形式,通过已知的方法用有机溶剂处理(+)胺盐,然后 分解(+)胺盐形成(+)(2s,3s)-3-(2-氨基苯硫基)-2-羟基-3-(4'-甲氧基苯基) - 丙酸。

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