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Boron tribromide → 3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-1-(3-hydroxy-5-methoxybenzyl)-5,5-dimethylimidazolidine-2,4-dione

HRID 2095060
ノート
印刷プレビュー

反応式

HRID 2095060 の反応式
C[O:2][C:3]1[CH:4]=[C:5]([CH:29]=[C:30]([O:32][CH3:33])[CH:31]=1)[CH2:6][N:7]1[C:11]([CH3:13])([CH3:12])[C:10](=[O:14])[N:9]([C:15]2[CH:16]=[N:17][N:18]([CH2:20][C:21]3[C:22]([CH3:27])=[N:23][O:24][C:25]=3[CH3:26])[CH:19]=2)[C:8]1=[O:28].B(Br)(Br)Br>ClCCl>[CH3:27][C:22]1[C:21]([CH2:20][N:18]2[CH:19]=[C:15]([N:9]3[C:10](=[O:14])[C:11]([CH3:13])([CH3:12])[N:7]([CH2:6][C:5]4[CH:29]=[C:30]([O:32][CH3:33])[CH:31]=[C:3]([OH:2])[CH:4]=4)[C:8]3=[O:28])[CH:16]=[N:17]2)=[C:25]([CH3:26])[O:24][N:23]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

4

反応物 2

HCID 25134Boron tribromideHCID 533751511-(3,5-dimethoxybenzyl)-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-5,5-dimethylimidazolidine-2,4-dione

生成物 1

HCID 533736383-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-1-(3-hydroxy-5-methoxybenzyl)-5,5-dimethylimidazolidine-2,4-dione収率 47%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

反応条件

温度
-78 °C

実験手順

1-(3,5-dimethoxybenzyl)-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-5,5-dimethylimidazolidine-2,4-dione (Example 12-18) (114 mg, 0.252 mmol) was dissolved in dichloromethane (1 mL). The mixture was cooled down to −78° C. and boron tribromide (1.0 M solution in dichloromethane, 1.25 mL) was added dropwise. After complete addition, the mixture was allowed to warm to room temperature and stirring continued for 3 hours. The mixture was quenched with water and the organic phase was separated, dried over anhydrous Na2SO4, filtered and evaporated under reduced pressure. The residue was suspended in methanol (1 mL) and purified by reverse phase HPLC (25 minute gradient: acetonitrile/water). Yield 47% (45 mg), white solid. 1H NMR (DMSO-d6, 400 MHz): s, 6H), 2.16 (s, 3H), 2.42 (s, 3H), 3.67 (s, 3H), 4.43 (s, 2H), 5.20 (s, 2H), 6.22 (t, J=2.4 Hz, 1H), 6.39 (m, 2H), 7.83 (d, J=0.4 Hz, 1H), 8.21 (s, 1H), 9.40 (br s, 1H). Mp. 72-74° C. MS 440 (MH+). The title compound was shown to inhibit hT2R08 bitter receptor and had an IC50 of 0.02 μM.

後処理

  1. additionAfter complete addition
  2. temperatureto warm to room temperature
  3. customThe mixture was quenched with water
  4. customthe organic phase was separated
  5. dry with materialdried over anhydrous Na2SO4
  6. filtrationfiltered
  7. customevaporated under reduced pressure
  8. custompurified by reverse phase HPLC (25 minute gradient: acetonitrile/water)

出典と根拠

ORDレコード
ord-c8ed953b85104109b1a6968c02344c66
出典データセット
uspto-grants-2013_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08445692B2

反応ノート

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