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Sulfuric acid magnesium salt (1:1) → 2-[1-(Tert-butoxycarbonylamino-methyl)-6,8-dimethoxy-isoquinolin-4-ylamino]thiazole-4-carboxylic acid ethyl ester

HRID 14650
ノート
印刷プレビュー

反応式

HRID 14650 の反応式
[C:1]([O:5][C:6](=[O:27])[NH:7][CH2:8][C:9]1[C:18]2[C:13](=[CH:14][C:15]([O:21][CH3:22])=[CH:16][C:17]=2[O:19][CH3:20])[C:12]([NH:23][C:24]([NH2:26])=[S:25])=[CH:11][N:10]=1)([CH3:4])([CH3:3])[CH3:2].Br[CH2:29][C:30](=O)[C:31]([O:33][CH2:34][CH3:35])=[O:32].[O-]S([O-])(=O)=O.[Mg+2]>CC(C)=O>[CH2:34]([O:33][C:31]([C:30]1[N:26]=[C:24]([NH:23][C:12]2[C:13]3[C:18](=[C:17]([O:19][CH3:20])[CH:16]=[C:15]([O:21][CH3:22])[CH:14]=3)[C:9]([CH2:8][NH:7][C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:27])=[N:10][CH:11]=2)[S:25][CH:29]=1)=[O:32])[CH3:35]
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

5

反応物 3

HCID 24083Sulfuric acid magnesium salt (1:1)HCID 66144Ethyl bromopyruvateHCID 59341068(6,8-Dimethoxy-4-thioureido-isoquinolin-1-ylmethyl)carbamic acid tert-butyl ester

生成物 1

HCID 593411092-[1-(Tert-butoxycarbonylamino-methyl)-6,8-dimethoxy-isoquinolin-4-ylamino]thiazole-4-carboxylic acid ethyl ester収率 42.1%

試薬・触媒・溶媒 1

HCID 180
Acetone
溶媒

反応条件

温度
60 °C

実験手順

To a solution of (6,8-dimethoxy-4-thioureido-isoquinolin-1-ylmethyl)carbamic acid tert-butyl ester (62 mg, 0.158 mmol) and ethyl bromopyruvate (37.7 mg, 0.174 mmol) in acetone (1.6 mL) was added MgSO4 (9.5 mg, 0.079 mmol). The resulting suspension was stirred at 60° C. for 3 h. The reaction was cooled to RT and concentrated. The residue was purified by passing through a 5 g silica cartridge eluting with 2% MeOH in DCM to give 2-[1-(tert-butoxycarbonylamino-methyl)-6,8-dimethoxy-isoquinolin-4-ylamino]thiazole-4-carboxylic acid ethyl ester as a pale yellow solid (32.5 mg, 42%). 1H-NMR (CDCl3): δ, 8.53 (s, 1H), 7.47 (s, 1H), 6.82 (s, 1H), 6.61 (s, 1H), 5.07 (d, 2H, J=4.2 Hz), 4.41 (q, 2H, J=7.2 Hz), 4.00 (s, 3H), 3.89 (s, 3H), 1.52 (s, 9H), 1.41 (t, 3H, J=7.3 Hz); MS: calculated for C23H28N4O6S+H 489.0; found: 489.0.

後処理

  1. temperatureThe reaction was cooled to RT
  2. concentrationconcentrated
  3. customThe residue was purified
  4. washeluting with 2% MeOH in DCM

出典と根拠

ORDレコード
ord-9e7236acfd6e427693c7df328b1f75c4
出典データセット
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07732446B1

反応ノート

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