The present invention relates to a (2R, 3R)-3-(3-substituted phenyl)-2-methyl n-pentanamide compounds as shown in the formula I and the preparation method thereof, wherein, the substituents are as defined in the specification, the present invention further relates to a use of the above compounds for the preparation of tapentadol II or its pharmaceutically acceptable salt, and the intermediates involved in the preparation process.
本发明涉及一种如
化学式I所示的(2R, 3R)-3-(3-取代苯基)-2-甲基n-戊酰胺化合物及其制备方法,其中,取代基如规范中所定义,本发明还涉及上述化合物用于制备tapentadol II或其药用可接受盐,以及制备过程中涉及的中间体。