Cyanogen Bromide → (S)-3-(3-(4-(5-amino-1,3,4-oxadiazol-2-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)-4-(4-fluorophenyl)oxazolidin-2-one

HRID 539125ノート

反応式

HRID 539125 の反応式
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C@H:8]2[CH2:12][O:11][C:10](=[O:13])[N:9]2[C:14]2[CH:19]=[CH:18][N:17]3[N:20]=[CH:21][C:22]([C:23]4[CH:32]=[CH:31][C:26]([C:27]([NH:29][NH2:30])=[O:28])=[CH:25][CH:24]=4)=[C:16]3[N:15]=2)=[CH:4][CH:3]=1.[N:33]#[C:34]Br.C([O-])(O)=O.[Na+]>O1CCOCC1.O.CCOC(C)=O>[NH2:33][C:34]1[O:28][C:27]([C:26]2[CH:31]=[CH:32][C:23]([C:22]3[CH:21]=[N:20][N:17]4[CH:18]=[CH:19][C:14]([N:9]5[C@@H:8]([C:5]6[CH:6]=[CH:7][C:2]([F:1])=[CH:3][CH:4]=6)[CH2:12][O:11][C:10]5=[O:13])=[N:15][C:16]=34)=[CH:24][CH:25]=2)=[N:29][N:30]=1

参加物

7

反応物 3

HCID 10476Cyanogen BromideHCID 516892Sodium BicarbonateHCID 67035490(S)-4-(5-(4-(4-fluorophenyl)-2-oxooxazolidin-3-yl)pyrazolo[1,5-a]pyrimidin-3-yl)benzohydrazide

生成物 1

HCID 67034511(S)-3-(3-(4-(5-amino-1,3,4-oxadiazol-2-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)-4-(4-fluorophenyl)oxazolidin-2-one収率 16%

試薬・触媒・溶媒 3

HCID 962Water溶媒HCID 8857Ethyl Acetate溶媒HCID 312751,4-Dioxane溶媒

実験手順

To a suspension of (S)-4-(5-(4-(4-fluorophenyl)-2-oxooxazolidin-3-yl)pyrazolo[1,5-a]pyrimidin-3-yl)benzohydrazide (0.040 g, 0.0925 mmol) in dioxane (4 mL) was added cyanic bromide (0.0216 g, 0.204 mmol) followed by a solution of NaHCO3 (0.00933 g, 0.111 mmol) in water (0.9 mL). The resulting mixture was stirred at ambient temperature overnight, then diluted with EtOAc. The organic layer was washed with brine and water, dried (phase separator silicone treated filter paper) and concentrated. The crude material was purified on silica gel (2-5% MeOH in DCM) to provide (S)-3-(3-(4-(5-amino-1,3,4-oxadiazol-2-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)-4-(4-fluorophenyl)oxazolidin-2-one (0.0066 g, 16% yield). LCMS (APCI+) m/z 458 [M+H]+.

後処理

  1. washThe organic layer was washed with brine and water
  2. customdried
  3. addition(phase separator silicone treated filter paper)
  4. concentrationconcentrated
  5. customThe crude material was purified on silica gel (2-5% MeOH in DCM)

出典と根拠

ORDレコード
ord-229b5807c8ed4616a99e4fc427e2c048
出典データセット
uspto-grants-2014_10
特許番号
US08865726B2

反応ノート

読み込み中…