Benzyl chloroformate → benzyl[(2S)-1-{[tert-butyl(diphenyl)silyl]oxy}-6-hydroxyhexan-2-yl](3-methylbutyl)carbamate

HRID 1524347노트

반응식

HRID 1524347 반응식
[Si:1]([O:18][CH2:19][C@@H:20]([NH:26][CH2:27][CH2:28][CH:29]([CH3:31])[CH3:30])[CH2:21][CH2:22][CH2:23][CH2:24][OH:25])([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C([O-])(O)=O.[Na+].Cl[C:38]([O:40][CH2:41][C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=1)=[O:39]>C(Cl)(Cl)Cl>[CH2:41]([O:40][C:38](=[O:39])[N:26]([C@@H:20]([CH2:21][CH2:22][CH2:23][CH2:24][OH:25])[CH2:19][O:18][Si:1]([C:14]([CH3:17])([CH3:16])[CH3:15])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)[CH2:27][CH2:28][CH:29]([CH3:31])[CH3:30])[C:42]1[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=1

참가 물질

5

반응물 3

HCID 10387Benzyl chloroformateHCID 516892Sodium BicarbonateHCID 86708047(5S)-6-{[tert-butyl(diphenyl)silyl]oxy}-5-[(3-methylbutyl)amino]hexan-1-ol

생성물 1

HCID 86708050benzyl[(2S)-1-{[tert-butyl(diphenyl)silyl]oxy}-6-hydroxyhexan-2-yl](3-methylbutyl)carbamate수율 67.1%

시약·촉매·용매 1

HCID 6212Chloroform용매

실험 절차

To a stirred solution of the material from Step 5 (8 g, 18.11 mmol) in a 2:1 mixture of chloroform and saturated aqueous NaHCO3 (271 mL) was added benzyl chloroformate (2.59 mL, 118.11 mmol). The reaction mixture was stirred at room temperature for 1 hour, partitioned and extracted with chloroform. The combined organics were washed with brine, dried over MgSO4, filtered and concentrated in vacuo. The residue was purified by flash chromatography on silica gel using EtOAc-hexanes (10 to 70%) to yield 7 g of the title compound. LCMS (M+1)=576

후처리

  1. custompartitioned
  2. extractionextracted with chloroform
  3. washThe combined organics were washed with brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash chromatography on silica gel

출처 및 근거

ORD 기록
ord-2a5b393dc4c34cb6887016cd2e555922
출처 데이터셋
uspto-grants-2015_07
특허 번호
US09079834B2

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