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Trifluoroacetic acid → 1-[1-[3-(4-Benzo[d]isoxazol-3-yl-piperazin-1-yl)-2-hydroxy-propyl]-3-(4-trifluoromethyl-phenyl)-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl]-ethanone

HRID 132935
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HRID 132935 반응식
C(O[C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14]2[C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][C:17]=3[O:16][N:15]=2)[CH2:10][CH2:9]1)=O)(C)(C)C.FC(F)(F)C(O)=O.[O:30]1C[CH:31]1[CH2:33][N:34]1[C:42]2[CH2:41][CH2:40][N:39]([C:43](=[O:45])[CH3:44])[CH2:38][C:37]=2[C:36]([C:46]2[CH:51]=[CH:50][C:49]([C:52]([F:55])([F:54])[F:53])=[CH:48][CH:47]=2)=[N:35]1>C(Cl)Cl>[O:16]1[C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=2[C:14]([N:11]2[CH2:10][CH2:9][N:8]([CH2:6][CH:31]([OH:30])[CH2:33][N:34]3[C:42]4[CH2:41][CH2:40][N:39]([C:43](=[O:45])[CH3:44])[CH2:38][C:37]=4[C:36]([C:46]4[CH:51]=[CH:50][C:49]([C:52]([F:55])([F:54])[F:53])=[CH:48][CH:47]=4)=[N:35]3)[CH2:13][CH2:12]2)=[N:15]1
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참가 물질

5

반응물 3

HCID 6422Trifluoroacetic acidHCID 222938171-[1-Oxiranylmethyl-3-(4-trifluoromethyl-phenyl)-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl]-ethanoneHCID 592523164-Benzo[d]isoxazol-3-yl-piperazine-1-carboxylic acid tert-butyl ester

생성물 1

HCID 101206231-[1-[3-(4-Benzo[d]isoxazol-3-yl-piperazin-1-yl)-2-hydroxy-propyl]-3-(4-trifluoromethyl-phenyl)-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl]-ethanone수율 68.4%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

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온도
60 °C

실험 절차

A solution of 82 mg (0.27 mmol) of 4-benzo[d]isoxazol-3-yl-piperazine-1-carboxylic acid tert-butyl ester in 2 mL of CH2Cl2 was treated with trifluoroacetic acid (0.5 mL) at room temperature overnight. The solvent was then removed and the crude product dissolved in EtOH and stirred over 100 mg of sodium bicarbonate for 1 h, the solid was then filtered off and the filtrate concentrated. The crude piperazine was then dissolved in 4 mL EtOH and treated with 100 mg (0.27 mmol) of 1-[1-oxiranylmethyl-3-(4-trifluoromethyl-phenyl)-1,4,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-5-yl]-ethanone. The solution was heated to 60° C. overnight. The solvent was then removed by rotary evaporation and the crude product was purified by column chromatography (silica, 0-10% MeOH/EtOAc) to afford 105 mg (68%) of a white solid. MS (electrospray), exact mass calculated for C29H31F3N6O3, 568.24; m/z found, 569.2 [M+H]+. 1H NMR (CDCl3, 400 MHz, a mixture of amide rotamers): 7.77 (d, J=8.41 Hz, 1H), 7.69 (m, 2H), 7.67-7.62 (m, 2H), 7.50-7.44 (m, 1H), 7.45-7.42 (m, 1H), 7.23-7.18 (m, 1H), 4.93 (br m, 1H), 4.87 and 4.75 (A and B of AB quartet, J=15.65 Hz, 1H), 4.65 (br s, 1H), 4.27-4.15 (m, 2.3H), 4.09-3.95 (m, 1.7H), 3.91-3.82 (m, 0.7H), 3.81-3.66 (m, 1.3H), 3.62-3.49 (m, 4H), 3.01-2.85 (m, 1.5H), 2.85-2.74 (m, 2.5H), 2.71-2.60 (m, 2H), 2.58-2.45 (m, 2H), 2.20 (s, 1.5H), 2.15 (s, 1.5H).

후처리

  1. customThe solvent was then removed
  2. dissolutionthe crude product dissolved in EtOH
  3. filtrationthe solid was then filtered off
  4. concentrationthe filtrate concentrated
  5. dissolutionThe crude piperazine was then dissolved in 4 mL EtOH
  6. customThe solvent was then removed by rotary evaporation
  7. customthe crude product was purified by column chromatography (silica, 0-10% MeOH/EtOAc)

출처 및 근거

ORD 기록
ord-2185fac110624362a020a5ae8b069313
출처 데이터셋
uspto-grants-2008_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07388011B2

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