Ethyl Acetate → 4-{1-[2,5-Difluoro-4-(1-hydroxy-ethyl)-phenyl]-piperidin-4-ylideneaminooxy}-piperidine-1-carboxylic acid isopropyl ester

HRID 2066861노트

반응식

HRID 2066861 반응식
[BH4-].[Na+].[CH:3]([O:6][C:7]([N:9]1[CH2:14][CH2:13][CH:12]([O:15][N:16]=[C:17]2[CH2:22][CH2:21][N:20]([C:23]3[CH:28]=[C:27]([F:29])[C:26]([C:30](=[O:32])[CH3:31])=[CH:25][C:24]=3[F:33])[CH2:19][CH2:18]2)[CH2:11][CH2:10]1)=[O:8])([CH3:5])[CH3:4].C(OCC)(=O)C>CO.C([O-])(O)=O.[Na+]>[CH:3]([O:6][C:7]([N:9]1[CH2:14][CH2:13][CH:12]([O:15][N:16]=[C:17]2[CH2:18][CH2:19][N:20]([C:23]3[CH:28]=[C:27]([F:29])[C:26]([CH:30]([OH:32])[CH3:31])=[CH:25][C:24]=3[F:33])[CH2:21][CH2:22]2)[CH2:11][CH2:10]1)=[O:8])([CH3:5])[CH3:4]

참가 물질

6

반응물 3

HCID 8857Ethyl AcetateHCID 4311764Sodium borohydrideHCID 866550104-[1-(4-Acetyl-2,5-difluoro-phenyl)-piperidin-4-ylideneaminooxy]-piperidine-1-carboxylic acid isopropyl ester

생성물 1

HCID 583335224-{1-[2,5-Difluoro-4-(1-hydroxy-ethyl)-phenyl]-piperidin-4-ylideneaminooxy}-piperidine-1-carboxylic acid isopropyl ester

시약·촉매·용매 2

HCID 887Methanol용매HCID 516892Sodium Bicarbonate용매

실험 절차

NaBH4 (0.15 g, 3.9 mmol) was added at 0° C. to a stirred solution of 50a (0.15 g, 0.34 mmol) in 5 mL of methanol. After 1 h, the mixture was diluted with 10 mL of saturated NaHCO3 and stirred for 20 minutes. The mixture was poured into ethyl acetate (25 mL), washed twice with brine (25 mL), dried and concentrated under vacuum. The residue was purified on an AS-H column (elution with 5% EtOH+0.1% triethylamine in hexane) to afford the 2 enantiomers of 4-{1-[2,5-difluoro-4-(1-hydroxy-ethyl)-phenyl]-piperidin-4-ylideneaminooxy}-piperidine-1-carboxylic acid isopropyl ester 50-1, LC-MS 422.2 (MFE-18), tR=6.45 (Method 2). EC50: 48 nM. 78 mg of the first enantiomer and 46 mg of the second enantiomer were obtained.

후처리

  1. washwashed twice with brine (25 mL)
  2. customdried
  3. concentrationconcentrated under vacuum
  4. customThe residue was purified on an AS-H column (elution with 5% EtOH+0.1% triethylamine in hexane)

출처 및 근거

ORD 기록
ord-37e9fc74101c4b4899f526f39dd16d0c
출처 데이터셋
uspto-grants-2012_10
특허 번호
US08293729B2

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