申请人:Hovione Scientia Limited
公开号:US10759801B2
公开(公告)日:2020-09-01
The present invention discloses processes comprising a) reacting ethyl isonipecotate with 1-bromo-2-chloroethane in the presence of an organic base in a solvent to form ethyl 1-(2-chloroethyl)piperidine-4-carboxylate (II) or a salt thereof. Process step a) may be included in a process for preparing umeclidinium bromide that comprises further process steps: b) reacting ethyl 1-(2-chloroethyl)piperidine-4-carboxylate (II) or a salt thereof with lithium diisopropylamide in a solvent to form ethyl 1-azabicyclo[2.2.2]octane-4-carboxylate (III); c) reacting ethyl 1-azabicyclo[2.2.2]octane-4-carboxylate (III) with phenyl lithium in a solvent to form 1-azabicyclo[2.2.2]oct-4-yl(diphenyl)methanol (IV); and d) reacting 1-azabicyclo[2.2.2]oct-4-yl(diphenyl)methanol (IV) with ((2-bromoethoxy)methyl) benzene in a solvent to form 4-[hydroxyl(diphenyl)methyl]-1-[2-(phenylmethyl)oxy]ethyl]-1-azoniabicyclo[2.2.2]octane bromide (I), umeclidinium bromide. A process comprising d) reacting 1-azabicyclo[2.2.2]oct-4-yl(diphenyl)methanol with ((2-bromoethoxy)methyl) benzene in a solvent to form 4-[hydroxyl(diphenyl)methyl]-1-[2-(phenylmethyl)oxy]ethyl]-1-azoniabicyclo[2.2.2]octane bromide (I), umeclidinium bromide, wherein the solvent is selected from cyclic ethers such as tetrahydrofuran, aromatic solvents, such as toluene, ketones such as acetone and protic solvents such as water or combinations thereof, optionally wherein the solvent is water is also disclosed. Umeclidinium bromide obtainable from the disclosed processes, ethyl 1-(2-chloroethyl)piperidine-4-carboxylate (II) and pharmaceutical compositions are also disclosed.
本发明公开的工艺包括 a) 在有机碱存在下,在溶剂中使异哌酸乙酯与 1-溴-2-氯乙烷反应,生成 1-(2-氯乙基)哌啶-4-甲酸乙酯(II)或其盐。工艺步骤 a)可包括在制备乌美司溴铵的工艺中,该工艺包括进一步的工艺步骤: b) 将 1-(2-氯乙基)哌啶-4-羧酸乙酯(II)或其盐与二异丙基酰胺锂在溶剂中反应,生成 1-氮杂双环[2.2.2]辛烷-4-羧酸乙酯(III); c) 将 1-氮杂双环[2.2.2]辛烷-4-羧酸乙酯与二异丙基酰胺锂在溶剂中反应,生成 1-氮杂双环[2.2.2]辛烷-4-羧酸乙酯(III)。2]辛烷-4-甲酸乙酯(III)与苯基锂在溶剂中反应生成 1-氮杂双环[2.2.2]辛-4-基(二苯基)甲醇(IV);以及 d) 将 1-azabicyclo[2.2.2]辛-4-基(二苯基)甲醇(IV)与((2-溴乙氧基)甲基)苯在溶剂中反应,生成 4-[羟基(二苯基)甲基]-1-[2-(苯基甲基)氧基]乙基]-1-氮杂双环[2.2.2]辛烷溴化物(I),umeclidinium bromide。一种工艺,包括 d) 将 1-氮杂双环[2.2.2]辛-4-基(二苯基)甲醇与((2-溴乙氧基)甲基)苯在溶剂中反应生成 4-[羟基(二苯基)甲基]-1-[2-(苯基甲基)氧基]乙基]-1-氮杂双环[2.2.2]辛烷溴化物(I),umeclidinium bromide。2]octane bromide (I)、umeclidinium bromide,其中溶剂选自四氢呋喃等环状醚、甲苯等芳香族溶剂、丙酮等酮类溶剂和水等原生质溶剂或其组合,也公开了溶剂为水的任选情况。本发明还公开了可从所公开的工艺中获得的乌美拉啶溴化物、1-(2-氯乙基)哌啶-4-羧酸乙酯(II)和药物组合物。