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Cesium carbonate → 4-{(S)-2-[(4-Benzyloxycarbonylmethoxy-7-methyl-quinoline-2-carbonyl)-amino]-4-tert-butoxycarbonyl-butyryl}-piperazine-1-carboxylic acid ethyl ester

HRID 1185430
ノート
印刷プレビュー

反応式

HRID 1185430 の反応式
[CH2:1]([O:3][C:4]([N:6]1[CH2:11][CH2:10][N:9]([C:12](=[O:38])[C@@H:13]([NH:23][C:24]([C:26]2[CH:35]=[C:34]([OH:36])[C:33]3[C:28](=[CH:29][C:30]([CH3:37])=[CH:31][CH:32]=3)[N:27]=2)=[O:25])[CH2:14][CH2:15][C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:8][CH2:7]1)=[O:5])[CH3:2].C(=O)([O-])[O-].[Cs+].[Cs+].[CH2:45]([O:52][C:53](=[O:56])[CH2:54]Br)[C:46]1[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=1>CN(C=O)C.O>[CH2:1]([O:3][C:4]([N:6]1[CH2:7][CH2:8][N:9]([C:12](=[O:38])[C@@H:13]([NH:23][C:24]([C:26]2[CH:35]=[C:34]([O:36][CH2:54][C:53]([O:52][CH2:45][C:46]3[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=3)=[O:56])[C:33]3[C:28](=[CH:29][C:30]([CH3:37])=[CH:31][CH:32]=3)[N:27]=2)=[O:25])[CH2:14][CH2:15][C:16]([O:18][C:19]([CH3:21])([CH3:22])[CH3:20])=[O:17])[CH2:10][CH2:11]1)=[O:5])[CH3:2]
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 10796Cesium carbonateHCID 62576Benzyl bromoacetateHCID 178473386HCID 178473386、化合物

生成物 1

HCID 686004434-{(S)-2-[(4-Benzyloxycarbonylmethoxy-7-methyl-quinoline-2-carbonyl)-amino]-4-tert-butoxycarbonyl-butyryl}-piperazine-1-carboxylic acid ethyl ester

試薬・触媒・溶媒 2

HCID 962Water溶媒
HCID 6228
Dimethylformamide
溶媒

実験手順

To a solution of 26.4 g of 4-{(S)-4-tert-Butoxycarbonyl-2-[(4-hydroxy-7-methyl-quinoline-2-carbonyl)-amino]-butyryl}-piperazine-1-carboxylic acid ethyl ester (prepared analogously as in example 1) in 150 ml of DMF, 18 g of cesium carbonate and 12.7 g of Bromo-acetic acid benzyl ester was added and stirred for 16 h. Then, the reaction mixture was diluted with water and extracted with ethyl acetate (3×300 ml). The combined organic phases were dried over MgSO4 and the solvents were removed under reduced pressure. The crude product was purified by chromatography on silica gel eluting with a gradient of n-heptane/ethyl acetate. The fractions containing the product were combined and the solvent evaporated under reduced pressure. Yield: 23.6 g.

後処理

  1. extractionextracted with ethyl acetate (3×300 ml)
  2. dry with materialThe combined organic phases were dried over MgSO4
  3. customthe solvents were removed under reduced pressure
  4. customThe crude product was purified by chromatography on silica gel eluting with a gradient of n-heptane/ethyl acetate
  5. additionThe fractions containing the product
  6. customthe solvent evaporated under reduced pressure

出典と根拠

ORDレコード
ord-b37f98d4f8a942b9975cc3705ffce6b2
出典データセット
uspto-grants-2014_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08669266B2

反応ノート

読み込み中…

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