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Methanol → (S)-5-(1-(5-fluoro-2-methoxypyridin-3-yl)-2-hydroxyethylamino)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid

HRID 1426958
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HRID 1426958 반응식
[F:1][C:2]1[CH:3]=[C:4]([C@H:10]2[CH2:14][O:13]C(=O)[N:11]2[C:16]2[CH:21]=[CH:20][N:19]3[N:22]=[CH:23][C:24]([C:25]([O:27]CC)=[O:26])=[C:18]3[N:17]=2)[C:5]([O:8][CH3:9])=[N:6][CH:7]=1.CO.C1COCC1.O.[OH-].[Li+]>O>[F:1][C:2]1[CH:3]=[C:4]([C@H:10]([NH:11][C:16]2[CH:21]=[CH:20][N:19]3[N:22]=[CH:23][C:24]([C:25]([OH:27])=[O:26])=[C:18]3[N:17]=2)[CH2:14][OH:13])[C:5]([O:8][CH3:9])=[N:6][CH:7]=1
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참가 물질

6

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HCID 887MethanolHCID 8028TetrahydrofuranHCID 168937Lithium hydroxide, monohydrateHCID 86691742(S)-ethyl 5-(4-(5-fluoro-2-methoxypyridin-3-yl)-2-oxooxazolidin-3-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate

생성물 1

HCID 86691743(S)-5-(1-(5-fluoro-2-methoxypyridin-3-yl)-2-hydroxyethylamino)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid수율 45.2%

시약·촉매·용매 1

HCID 962Water용매

실험 절차

To a solution of (S)-ethyl 5-(4-(5-fluoro-2-methoxypyridin-3-yl)-2-oxooxazolidin-3-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylate (311 mg, 0.77 mmol) in a 1:1:1 mixture of MeOH:THF:H2O (15 mL) was added lithium hydroxide monohydrate (97.6 mg, 2.32 mmol). The mixture was stirred at ambient temperature for 16 hours and then at 50° C. for 19 hours, then concentrated to ⅓ volume, diluted with water (30 mL) and acidified to pH 4-5 with 1N HCl. The resulting precipitate was collected by filtration, washed with water and Et2O then dried under reduced pressure to afford (S)-5-(1-(5-fluoro-2-methoxypyridin-3-yl)-2-hydroxyethylamino)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (121 mg, 45% yield) as a white powder. MS (apci) m/z=347.9 (M+H).

후처리

  1. waitat 50° C. for 19 hours
  2. concentrationconcentrated
  3. additiondiluted with water (30 mL)
  4. filtrationThe resulting precipitate was collected by filtration
  5. washwashed with water and Et2O
  6. customthen dried under reduced pressure

출처 및 근거

ORD 기록
ord-954b8a45a5354b75b6150a37770b7453
출처 데이터셋
uspto-grants-2015_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08933084B2

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