Acetone → (2R,4R)-2-[(4S,5S)-3-Acetyl-4-(3,5-difluorobenzyl)-2,2-dimethyloxazolidin-5-yl]-4-(4-methoxy-benzyloxy)-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 732601노트

반응식

HRID 732601 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:12][C@H:11]([O:13][CH2:14][C:15]2[CH:20]=[CH:19][C:18]([O:21][CH3:22])=[CH:17][CH:16]=2)[CH2:10][C@@H:9]1[C@@H:23]([OH:38])[C@@H:24]([NH:34][C:35](=[O:37])[CH3:36])[CH2:25][C:26]1[CH:31]=[C:30]([F:32])[CH:29]=[C:28]([F:33])[CH:27]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:39][C:40]([CH3:42])=O.COC(C)=C>ClCCl>[C:1]([O:5][C:6]([N:8]1[CH2:12][C@H:11]([O:13][CH2:14][C:15]2[CH:16]=[CH:17][C:18]([O:21][CH3:22])=[CH:19][CH:20]=2)[CH2:10][C@@H:9]1[C@H:23]1[O:38][C:40]([CH3:42])([CH3:39])[N:34]([C:35](=[O:37])[CH3:36])[C@H:24]1[CH2:25][C:26]1[CH:27]=[C:28]([F:33])[CH:29]=[C:30]([F:32])[CH:31]=1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

참가 물질

5

반응물 3

HCID 180AcetoneHCID 83002-MethoxypropeneHCID 68814707(2R,4R)-2-[(1S,2S)-2-acetylamino-3-(3,5-difluorophenyl)-1-hydroxypropyl]-4-(4-methoxy-benzyloxy)-pyrrolidine-1-carboxylic acid tert-butyl ester

생성물 1

HCID 68816295(2R,4R)-2-[(4S,5S)-3-Acetyl-4-(3,5-difluorobenzyl)-2,2-dimethyloxazolidin-5-yl]-4-(4-methoxy-benzyloxy)-pyrrolidine-1-carboxylic acid tert-butyl ester수율 607.3%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

Add to a solution of (2R,4R)-2-[(1S,2S)-2-acetylamino-3-(3,5-difluorophenyl)-1-hydroxypropyl]-4-(4-methoxy-benzyloxy)-pyrrolidine-1-carboxylic acid tert-butyl ester (5.64 g, 10.55 mmol) in dichloromethane (25 mL) and acetone (25 mL) p-toluene sulfonic acid pyridine salt (0.245 g, 1 mmol) and 2-methoxy propene (4.6 mL, 49 mmol). Stir 60 min and concentrate. Dissolve in ethyl acetate and wash with saturated aqueous sodium bicarbonate, saturated aqueous sodium chloride, dry (magnesium sulfate) and purify (silica gel chromatography, eluting with hexanes/ethyl acetate mixtures) to give the title compound as a foam (3.49 g, 61%).

후처리

  1. concentrationconcentrate
  2. dissolutionDissolve in ethyl acetate
  3. washwash with saturated aqueous sodium bicarbonate, saturated aqueous sodium chloride
  4. dry with materialdry (magnesium sulfate)
  5. custompurify
  6. wash(silica gel chromatography, eluting with hexanes/ethyl acetate mixtures)

출처 및 근거

ORD 기록
ord-5637c2c7aed64c0eaf3b5a657d5f73cc
출처 데이터셋
uspto-grants-2009_09
특허 번호
US07585885B2

반응 노트

불러오는 중…