Preparation of mibefradil via an acetamide anion
    10.
    发明授权
    Preparation of mibefradil via an acetamide anion 失效
    通过乙酰胺阴离子制备米非拉迪

    公开(公告)号:US5808088A

    公开(公告)日:1998-09-15

    申请号:US60151

    申请日:1998-04-14

    IPC分类号: C07D235/14

    CPC分类号: C07D235/14

    摘要: A method of preparing 2-�2-{�3-(1H-benzimidazol-2-yl)propyl!methylamino)}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-yl methoxyacetate comprises contacting 6-fluoro-1-isopropyl-3,4-dihydro-1H-naphthalen-2-one with the dianion of N-�3-(1H-benzimidazol-2-yl)propyl!-N-methylacetamide to form N-�3-(1H-benzimidazol-2-yl)propyl!-2-(6-fluoro-2-hydroxy-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-yl)-N-methylacetamide, reducing this to 2-�2-{�3-(1H-benzimidazol-2-yl)propyl!methylamino}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-ol, and treating the 2-�2-{�3-(1H-benzimidazol-2-yl)propyl!methylamino}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-ol with methoxyacetic acid or an activated derivative of methoxyacetic acid. The invention is particularly applicable to the preparation of mibefradil, (lS,2S)-2-�2-{�3-(1H-benzimidazol-2-yl)propyl!methylamino}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-yl methoxyacetate, and its dihydrochloride salt. N-�3-(1H-Benzimidazol-2-yl)propyl!-N-methylacetamide, and the acetic acid solvate of 2-�2- {�3-(1H-benzimidazol-2-yl)propyl!methylamino}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-ol dioxalate, are new.

    摘要翻译: 制备2- [2 - {[3-(1H-苯并咪唑-2-基)丙基]甲基氨基}}乙基] -6-氟-1-异丙基-1,2,3,4-四氢化萘-2 - 甲氧基乙酸甲酯包括使6-氟-1-异丙基-3,4-二氢-1H-萘-2-酮与N- [3-(1H-苯并咪唑-2-基)丙基] -N-甲基乙酰胺 形成N- [3-(1H-苯并咪唑-2-基)丙基] -2-(6-氟-2-羟基-1-异丙基-1,2,3,4-四氢化萘-2-基)-N - 甲基乙酰胺,将其还原成2- [2 - {[3-(1H-苯并咪唑-2-基)丙基]甲基氨基}乙基] -6-氟-1-氟丙基-1,2,3,4-四氢萘-2-酮 并将2- [2 - {[3-(1H-苯并咪唑-2-基)丙基]甲基氨基}乙基] -6-氟-1-氟丙基-1,2,3,4-四氢化萘 -2-醇与甲氧基乙酸或甲氧基乙酸的活化衍生物反应。 本发明特别适用于制备米非普利,(1S,2S)-2- [2 - {[3-(1H-苯并咪唑-2-基)丙基]甲基氨基}乙基] -6-氟-2-碘异丙基 -1,2,3,4-四氢萘-2-基甲氧基乙酸酯及其二盐酸盐。 N- [3-(1H-苯并咪唑-2-基)丙基] -N-甲基乙酰胺,和2- [2 - {[3-(1H-苯并咪唑-2-基)丙基]甲基氨基}乙基 ] -6-氟-1-异丙基-1,2,3,4-四氢萘-2-醇二氧杂环己烯,是新的。