The present invention relates to new processes for the preparation of compounds of formula I, especially the compound 2-2-Chloro-5-[(2S)-3-(5-chloro-1'H,3H-spiro[1- benzofuran-2,4'-piperidin]-1'-yl)-2-hydroxypropyl]oxy}-4-5 [(methylamino)carbonyl]phenoxy}-2-methylpropanoic acid and to new intermediates useful in the preparation thereof.
本发明涉及一种制备式I化合物的新工艺,特别是化合物2-2-
氯-5-[(2S)-3-(5-
氯-1'H,3H-螺[1-
苯并呋喃-2,4'-
哌啶]-1'-基)-2-羟基丙基]氧基}-4-5-[(甲
氨基)羰基]苯氧基}-2-甲基
丙酸以及用于其制备的新中间体。