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Lithium Hydroxide → [6-(5-Carbamoyl-pyrazin-2-yloxy)-1-hydroxy-4-methyl-1,3-dihydro-benzo[c][1,2]oxaborol-3-yl]-acetic acid

HRID 1798239
ノート
印刷プレビュー

反応式

HRID 1798239 の反応式
C([O:3][C:4](=[O:27])[CH2:5][CH:6]1[O:10][B:9]([OH:11])[C:8]2[CH:12]=[C:13]([O:17][C:18]3[CH:23]=[N:22][C:21]([C:24](=[O:26])[NH2:25])=[CH:20][N:19]=3)[CH:14]=[C:15]([CH3:16])[C:7]1=2)C.[Li+].[OH-]>C1COCC1.O>[C:24]([C:21]1[N:22]=[CH:23][C:18]([O:17][C:13]2[CH:14]=[C:15]([CH3:16])[C:7]3[CH:6]([CH2:5][C:4]([OH:27])=[O:3])[O:10][B:9]([OH:11])[C:8]=3[CH:12]=2)=[N:19][CH:20]=1)(=[O:26])[NH2:25]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 3939Lithium HydroxideHCID 58292848[6-(5-Carbamoyl-pyrazin-2-yloxy)-1-hydroxy-4-methyl-1,3-dihydro-benzo[c][1,2]oxaborol-3-yl]-acetic acid ethyl ester

生成物 1

HCID 58292723[6-(5-Carbamoyl-pyrazin-2-yloxy)-1-hydroxy-4-methyl-1,3-dihydro-benzo[c][1,2]oxaborol-3-yl]-acetic acid収率 52.7%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028
Tetrahydrofuran
溶媒

実験手順

A solution of [6-(5-carbamoyl-pyrazin-2-yloxy)-1-hydroxy-4-methyl-1,3-dihydro-benzo[c][1,2]oxaborol-3-yl]-acetic acid ethyl ester (77 mg, 0.21 mmol) in THF (4 mL) was treated with LiOH (35 mg, 0.84 mmol) in water (4 mL) at room temperature for 1 h. The reaction was concentrated to dryness. The residue was diluted with water and adjusted to pH 3. The mixture was purified by preparative HPLC to give the title compound (38 mg). 1H NMR (300 MHz, CD3OD) δ 8.76 (s, 1H), 8.46 (s, 1H), 7.29 (s, 1H), 7.16 (s, 1H), 5.73-5.69 (m, 1H), 3.33-3.18 (m, 1H), 2.42 (s, 3H), 2.38-2.33 (m, 1H). MS found: (M+H)+: 344.1.

後処理

  1. concentrationThe reaction was concentrated to dryness
  2. additionThe residue was diluted with water
  3. customThe mixture was purified by preparative HPLC

出典と根拠

ORDレコード
ord-35336613fa264b618be275b3df52b82e
出典データセット
uspto-grants-2013_01
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08343944B2

反応ノート

読み込み中…

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