Hydrochloric Acid → (2S,4S)-4-Mercapto-2-{4-[2-(p-nitrobenzyloxycarbonyl)oxyethyl]-1-piperazinylcarbonyl}-1-(p-nitrobenzyloxycarbonyl)pyrrolidine

HRID 727689ノート

反応式

HRID 727689 の反応式
Cl.C([S:5][C@@H:6]1[CH2:10][N:9]([C:11]([O:13][CH2:14][C:15]2[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=2)=[O:12])[C@H:8]([C:24]([N:26]2[CH2:31][CH2:30][N:29]([CH2:32][CH2:33][O:34][C:35]([O:37][CH2:38][C:39]3[CH:44]=[CH:43][C:42]([N+:45]([O-:47])=[O:46])=[CH:41][CH:40]=3)=[O:36])[CH2:28][CH2:27]2)=[O:25])[CH2:7]1)(=O)C>O1CCOCC1>[SH:5][C@@H:6]1[CH2:10][N:9]([C:11]([O:13][CH2:14][C:15]2[CH:16]=[CH:17][C:18]([N+:21]([O-:23])=[O:22])=[CH:19][CH:20]=2)=[O:12])[C@H:8]([C:24]([N:26]2[CH2:27][CH2:28][N:29]([CH2:32][CH2:33][O:34][C:35]([O:37][CH2:38][C:39]3[CH:40]=[CH:41][C:42]([N+:45]([O-:47])=[O:46])=[CH:43][CH:44]=3)=[O:36])[CH2:30][CH2:31]2)=[O:25])[CH2:7]1

参加物

4

反応物 2

HCID 313Hydrochloric AcidHCID 57136373(2S,4S)-4-Acetylthio-2-{4-[2-(4-nitrobenzyloxycarbonyl)oxyethyl]-1-piperazinylcarbonyl}-1-(4-nitrobenzyloxycarbonyl)pyrrolidine

生成物 1

HCID 15814079(2S,4S)-4-Mercapto-2-{4-[2-(p-nitrobenzyloxycarbonyl)oxyethyl]-1-piperazinylcarbonyl}-1-(p-nitrobenzyloxycarbonyl)pyrrolidine収率 73.6%

試薬・触媒・溶媒 1

HCID 312751,4-Dioxane溶媒

反応条件

温度
50 °C

実験手順

600 ml of a 10% w/v methanolic solution of hydrogen chloride were added to a solution of 140 g of (2S,4S)-4-acetylthio-2-{4-[2-(4-nitrobenzyloxycarbonyl)oxyethyl]-1-piperazinylcarbonyl}-1-(4-nitrobenzyloxycarbonyl)-pyrrolidine [prepared as described in step 90(b)(ii) or 90(c)(ii) above] in 150 ml of 1,4-dioxane, and the resulting mixture was stirred at 50° C. for 1 hour. At the end of this time, the reaction mixture was concentrated by evaporation under reduced pressure, and the concentrate was diluted with 1500 ml of ethyl acetate. The dilute solution was neutralized with an aqueous solution of sodium hydrogencarbonate and washed, in turn, with 300 ml of water and with 300 ml of an aqueous solution of sodium chloride. The solvent was removed by distillation under reduced pressure, and the resulting residue was purified by column chromatography through silica gel, using a gradient elution method, with mixtures of ethyl acetate and methanol ranging from 30:1 to 20:1 by volume as the eluent, to give 96.44 g of the title compound, as a colorless powder.

後処理

  1. concentrationAt the end of this time, the reaction mixture was concentrated by evaporation under reduced pressure
  2. additionthe concentrate was diluted with 1500 ml of ethyl acetate
  3. washwashed, in turn, with 300 ml of water and with 300 ml of an aqueous solution of sodium chloride
  4. customThe solvent was removed by distillation under reduced pressure
  5. customthe resulting residue was purified by column chromatography through silica gel
  6. washa gradient elution method

出典と根拠

ORDレコード
ord-c1f7eebc450045e8a255f605a60384a5
出典データセット
uspto-grants-1998_01
特許番号
US05712267

反応ノート

読み込み中…