Acetic Anhydride → 5-(R)-(2-(S)-Acetylamino-1-(S)-hydroxy-3-phenyl-propyl)-2-(S)-(2-cyclohexyl-ethyl)-morpholine-4-carboxylic acid tert-butyl ester

HRID 20372노트

반응식

HRID 20372 반응식
[C:1]([O:5][C:6]([N:8]1[C@@H:13]([C@@H:14]([OH:24])[C@@H:15]([NH2:23])[CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH2:12][O:11][C@@H:10]([CH2:25][CH2:26][CH:27]2[CH2:32][CH2:31][CH2:30][CH2:29][CH2:28]2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[C:40](OC(=O)C)(=[O:42])[CH3:41]>O1CCCC1.ClCCl>[C:1]([O:5][C:6]([N:8]1[C@@H:13]([C@@H:14]([OH:24])[C@@H:15]([NH:23][C:40](=[O:42])[CH3:41])[CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH2:12][O:11][C@@H:10]([CH2:25][CH2:26][CH:27]2[CH2:32][CH2:31][CH2:30][CH2:29][CH2:28]2)[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

참가 물질

6

반응물 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 685618115-(R)-(2-(S)-Amino-1-(S)-hydroxy-3-phenylpropyl)-2-(S)-(2-cyclohexylethyl)-morpholine-4-carboxylic acid tert-butyl ester

생성물 1

HCID 685610175-(R)-(2-(S)-Acetylamino-1-(S)-hydroxy-3-phenyl-propyl)-2-(S)-(2-cyclohexyl-ethyl)-morpholine-4-carboxylic acid tert-butyl ester수율 54.8%

시약·촉매·용매 2

HCID 6344Dichloromethane용매HCID 8028Tetrahydrofuran용매

실험 절차

Dissolve 5-(R)-(2-(S)-amino-1-(S)-hydroxy-3-phenylpropyl)-2-(S)-(2-cyclohexylethyl)-morpholine-4-carboxylic acid tert-butyl ester (140 mg, 0.31 mmol) in dry tetrahydrofuran (3 mL). Add triethylamine (0.05 mL, 0.35 mmol) followed by acetic anhydride (0.03 mL, 0.35 mmol) and stir at room temperature for 1 hour. Dilute with dichloromethane, wash with 0.1 N hydrochloric acid/saturated aqueous sodium chloride (30 mL), dry (sodium sulfate), filter, concentrate and purify (silica gel chromatography, eluting with 40:60 to 60:40 ethyl acetate:dichloromethane) acetate/dichloromethane to give the title compound (83 mg, 54%).

후처리

  1. washwash with 0.1 N hydrochloric acid/saturated aqueous sodium chloride (30 mL)
  2. dry with materialdry (sodium sulfate)
  3. filtrationfilter
  4. concentrationconcentrate
  5. custompurify (silica gel chromatography, eluting with 40:60 to 60:40 ethyl acetate:dichloromethane) acetate/dichloromethane

출처 및 근거

ORD 기록
ord-723717d5cb214f459decbdbf05a3a82b
출처 데이터셋
uspto-grants-2010_06
특허 번호
US07745438B2

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