3-Buten-1-ol → 4-{4-[(1E)-4-hydroxybut-1-en-1-yl]-2-methylbenzyl}-5-(propan-2-yl)-1H-pyrazol-3-yl 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranoside

HRID 1625936노트

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HRID 1625936 반응식
[CH2:1]([OH:5])[CH2:2][CH:3]=[CH2:4].[C:6]([O:9][C@@H:10]1[C@@H:33]([O:34][C:35](=[O:37])[CH3:36])[C@H:32]([O:38][C:39](=[O:41])[CH3:40])[C@@H:31]([CH2:42][O:43][C:44](=[O:46])[CH3:45])[O:30][C@H:11]1[O:12][C:13]1[C:17]([CH2:18][C:19]2[CH:24]=[CH:23][C:22](Br)=[CH:21][C:20]=2[CH3:26])=[C:16]([CH:27]([CH3:29])[CH3:28])[NH:15][N:14]=1)(=[O:8])[CH3:7].C1(C)C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>C(#N)C.C(N(CC)CC)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[C:6]([O:9][C@@H:10]1[C@@H:33]([O:34][C:35](=[O:37])[CH3:36])[C@H:32]([O:38][C:39](=[O:41])[CH3:40])[C@@H:31]([CH2:42][O:43][C:44](=[O:46])[CH3:45])[O:30][C@H:11]1[O:12][C:13]1[C:17]([CH2:18][C:19]2[CH:24]=[CH:23][C:22](/[CH:4]=[CH:3]/[CH2:2][CH2:1][OH:5])=[CH:21][C:20]=2[CH3:26])=[C:16]([CH:27]([CH3:29])[CH3:28])[NH:15][N:14]=1)(=[O:8])[CH3:7]

참가 물질

7

반응물 3

HCID 693893-Buten-1-olHCID 80271Tri-o-tolylphosphineHCID 685376803-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyloxy)-4-[(4-bromo-2-methyl-phenyl)methyl]-5-isopropyl-1H-pyrazole

생성물 1

HCID 867151534-{4-[(1E)-4-hydroxybut-1-en-1-yl]-2-methylbenzyl}-5-(propan-2-yl)-1H-pyrazol-3-yl 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranoside수율 50.6%

시약·촉매·용매 3

HCID 167845palladium(II) acetate촉매HCID 6342Acetonitrile용매HCID 8471Triethylamine용매

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온도
90 °C

실험 절차

Add 3-buten-1-ol (6.1 mL, 70 mmol) to a solution of 4-(4-bromo-2-methylbenzyl)-5-(propan-2-yl)-1H-pyrazol-3-yl 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranoside (15 g, 23.5 mmol) in acetonitrile (200 mL) and triethylamine (50 mL). Degas the solution with nitrogen over 10 minutes. Add tri-o-tolylphosphine (1.43 g, 4.7 mmol) and palladium acetate (526 mg, 2.35 mmol). After refluxing at 90° C. for 2 hours, cool and concentrate to remove the solvent under reduced pressure. Purify the resulting residue by flash chromatography (silica gel, gradient ethyl acetate/hexanes from 20-80% over 20 min, 330 g column) to provide the title compound (7.5 g, 11.9 mmol). MS (m/z): 631.2 (M+1), 629.2 (M−1).

후처리

  1. customDegas the solution with nitrogen over 10 minutes
  2. temperaturecool
  3. concentrationconcentrate
  4. customto remove the solvent under reduced pressure
  5. customPurify the resulting residue by flash chromatography (silica gel, gradient ethyl acetate/hexanes from 20-80% over 20 min, 330 g column)

출처 및 근거

ORD 기록
ord-a20fa3672e6146649b79c7b3eed5238c
출처 데이터셋
uspto-grants-2014_07
특허 번호
US08785404B2

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