There is described a process for the preparation of cinacalcet hydrochloride (I) which includes the steps of: a) reacting (R)-(+)-1-(1-naphthyl)ethylamine (II) with 3-[3-(trifluoromethyl)phenyl]propenaldehyde (III) to afford the non isolated intermediate (R)-N-[3-[3-(trifluoromethyl)phenyl]-2-propenylimino-N-[1-(1 - naphthyi)ethy!amine (IV); b) reducing the non isolated intermediate (R)-N-[3-[3-(trifluoromethyl)phenyl]-2-propenylimine-N-[-1 -(1 -naphthyl)ethylamine (IV) with a sequential addition of: - a solution of sodium borohydride, methanol and a base, - oxalic acid and - a base to obtain (R)-N-[3-[3-(trifluoromethyl)phenyl]-2- propenyl]-1-(1-naphthyl)ethylamine (V) by passing through the precipitation of the oxalate salt of compound (V) after the addition of oxalic acid; c) hydrogenating (R)-N-[3-[3-(trifluoromethyl)phenyl]-2-propenyl]-1 -(1 - naphthyl)ethylamine (V) thus obtaining (R)-N-(3-(3- (trifluoromethyl)phenyl]propyij-i-(i -naphthyl)ethylamine cinacalcet base (Vl), which is retaken in ethyl acetate; and d) treating the- solution of cinacalcet base (Vi) in ethyl acetate with hydrochloric acid to afford cinacalcet hydrochloride (I).
描述了一种用于制备
盐酸西那卡塞的过程,包括以下步骤:a)将(R)-(+)-1-(1-
萘基)
乙胺(II)与3-[3-(三
氟甲基)苯基]
丙烯醛(III)反应,得到非隔离的中间体(R)-N-[3-[3-(三
氟甲基)苯基]-2-
丙烯基
亚胺-N-[1-(1-
萘基)
乙胺(IV);b)用顺序加入的方式还原非隔离的中间体(R)-N-[3-[3-(三
氟甲基)苯基]-2-
丙烯基
亚胺-N-[1-(1-
萘基)
乙胺(IV),包括:- 氢
硼酸钠、
甲醇和碱的溶液,-
草酸和- 碱,以获得(R)-N-[3-[3-(三
氟甲基)苯基]-2-
丙烯基]-1-(1-
萘基)
乙胺(V),在加入
草酸后通过沉淀化合物(V)的
草酸盐而得到;c)氢化(R)-N-[3-[3-(三
氟甲基)苯基]-2-
丙烯基]-1-(1-
萘基)
乙胺(V),从而获得(R)-N-(3-(3-(三
氟甲基)苯基)丙基)-1-(1-
萘基)
乙胺西那卡塞碱(VI),在
乙酸乙酯中重新提取;d)用
盐酸处理
乙酸乙酯中的
西那卡塞碱(VI)溶液,得到
盐酸西那卡塞(I)。