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Hydrogen Bromide → 5-(4-Chloro-2-methylphenylcarbamoyl)-4-{4-cyclopropyl-5-[3-(2,2-dimethylpropyl)cyclobutyl]isoxazol-3-yl}valeric acid

HRID 1912082
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HRID 1912082 반응식
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]([CH2:11][CH:12]([C:19]2[C:23]([CH:24]3[CH2:26][CH2:25]3)=[C:22]([CH:27]3[CH2:30][CH:29]([CH2:31][C:32]([CH3:35])([CH3:34])[CH3:33])[CH2:28]3)[O:21][N:20]=2)[CH2:13][CH2:14][C:15]([O:17]C)=[O:16])=[O:10])=[C:4]([CH3:36])[CH:3]=1.Br.C([O-])(=O)C.[Na+]>C(O)(=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]([CH2:11][CH:12]([C:19]2[C:23]([CH:24]3[CH2:25][CH2:26]3)=[C:22]([CH:27]3[CH2:28][CH:29]([CH2:31][C:32]([CH3:34])([CH3:33])[CH3:35])[CH2:30]3)[O:21][N:20]=2)[CH2:13][CH2:14][C:15]([OH:17])=[O:16])=[O:10])=[C:4]([CH3:36])[CH:3]=1
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참가 물질

5

반응물 3

HCID 260Hydrogen BromideHCID 517045Sodium AcetateHCID 71114755Methyl 5-(4-chloro-2-methylphenylcarbamoyl)-4-{4-cyclopropyl-5-[3-(2,2-dimethylpropyl)cyclobutyl]isoxazol-3-yl}valerate

생성물 1

HCID 711147445-(4-Chloro-2-methylphenylcarbamoyl)-4-{4-cyclopropyl-5-[3-(2,2-dimethylpropyl)cyclobutyl]isoxazol-3-yl}valeric acid수율 69.6%

시약·촉매·용매 1

HCID 176
Acetic Acid
용매

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온도
60 °C

실험 절차

Methyl 5-(4-chloro-2-methylphenylcarbamoyl)-4-{4-cyclopropyl-5-[3-(2,2-dimethylpropyl)cyclobutyl]isoxazol-3-yl}valerate (72.5 mg) and acetic acid (0.725 mL) were mixed. To the mixture was added 48 w/v % hydrobromic acid (0.363 mL) at RT. The mixture was stirred at 60° C., and then to the reaction mixture was added sodium acetate (287 mg) at ice temperature. The mixture was extracted with ethyl acetate. The organic layer was washed with water and brine, then dried over magnesium sulfate. The magnesium sulfate was filtered off and the filtrate was concentrated in vacuo. The resultant residue was purified by preparative chromatography (Eluent: methanol/chloroform/acetic acid=1/20/0.05) to give the title compound (49.1 mg). The specific optical rotation value of the title compound was [α]D25=+32.0° (c=1.00, methanol). The title compound was analyzed using a chiral column. The retention time of the title compound was 26.8 min., and the optical purity thereof was 94.8% ee.

후처리

  1. extractionThe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with water and brine
  3. dry with materialdried over magnesium sulfate
  4. filtrationThe magnesium sulfate was filtered off
  5. concentrationthe filtrate was concentrated in vacuo
  6. customThe resultant residue was purified by preparative chromatography (Eluent: methanol/chloroform/acetic acid=1/20/0.05)

출처 및 근거

ORD 기록
ord-87a47da439664b3ab572411747fd9dbf
출처 데이터셋
uspto-grants-2013_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08604069B2

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