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    • 10. 发明授权
    • Preparation of mibefradil via an acetamide anion
    • 通过乙酰胺阴离子制备米非拉迪
    • US5808088A
    • 1998-09-15
    • US60151
    • 1998-04-14
    • Peter J. HarringtonMichael P. Fleming
    • Peter J. HarringtonMichael P. Fleming
    • C07D235/14
    • C07D235/14
    • 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.
    • 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。