1,2-Dichloroethane → tert-butyl (1R,2S,3S,5R)-5-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-2-hydroxy-3-methylcyclohexylcarbamate

HRID 705254

反応式

HRID 705254 の反応式
[NH2:1][C:2]1[CH:3]=[N:4][CH:5]=[CH:6][C:7]=1[C@H:8]1[CH2:24][C@H:12]2[N:13]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])C(=O)[O:15][C@H:11]2[C@@H:10]([CH3:25])[CH2:9]1.[F:26][C:27]1[CH:32]=[CH:31][CH:30]=[C:29]([F:33])[C:28]=1[C:34]1[N:39]=[C:38]([C:40](O)=[O:41])[CH:37]=[CH:36][C:35]=1[F:43].C(Cl)CCl.C([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C.CCOC(C)=O.CCO>[F:26][C:27]1[CH:32]=[CH:31][CH:30]=[C:29]([F:33])[C:28]=1[C:34]1[N:39]=[C:38]([C:40]([NH:1][C:2]2[CH:3]=[N:4][CH:5]=[CH:6][C:7]=2[C@H:8]2[CH2:24][C@@H:12]([NH:13][C:17](=[O:18])[O:19][C:20]([CH3:22])([CH3:23])[CH3:21])[C@@H:11]([OH:15])[C@@H:10]([CH3:25])[CH2:9]2)=[O:41])[CH:37]=[CH:36][C:35]=1[F:43]

参加物

8

反応物 4

HCID 111,2-DichloroethaneHCID 10796Cesium carbonateHCID 592265526-(2,6-Difluorophenyl)-5-fluoropicolinic acidHCID 90055847(3aR,5R,7S,7aS)-tert-butyl 5-(3-aminopyridin-4-yl)-7-methyl-2-oxohexahydrobenzo[d]oxazole-3(2H)-carboxylate

生成物 1

HCID 86705216tert-butyl (1R,2S,3S,5R)-5-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-2-hydroxy-3-methylcyclohexylcarbamate収率 100%

試薬・触媒・溶媒 3

HCID 702Ethanol溶媒HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

To a solution of (3aR,5R,7S,7aS)-tert-butyl 5-(3-aminopyridin-4-yl)-7-methyl-2-oxohexahydrobenzo[d]oxazole-3(2H)-carboxylate (1.0 equiv.) in DMF (0.2 M) was added 6-(2,6-difluorophenyl)-5-fluoropicolinic acid (1.3 equiv.), aza-HOBt (1.3 equiv.) and EDC (1.3 equiv.). The mixture was stirred at rt for 16 hrs. The solution was diluted with EtOAc, washed with H2O, 1N NaOH, NaCl(sat), dried over MgSO4, filtered and concentrated to yield crude protected amide. The material was dissolved in EtOH (0.45 M), Cs2CO3 (1.0 equiv.) was added and the solution was submerged in a 60° C. oil bath and stirred for 90 mins The volatiles were removed in vacuo; the residue was partitioned between with EtOAc and H2O. The organic layer was washed with NaCl(sat), dried over MgSO4, filtered, concentrated and pumped on to yield tert-butyl (1R,2S,3S,5R)-5-(3-(6-(2,6-difluorophenyl)-5-fluoropicolinamido)pyridin-4-yl)-2-hydroxy-3-methylcyclohexylcarbamate in 100% yield. LC/MS (m/z)=557.3 (MH+), Rt=0.83 min.

後処理

  1. washwashed with H2O, 1N NaOH, NaCl(sat)
  2. dry with materialdried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customto yield crude protected amide
  6. customwas submerged in a 60° C.
  7. stirringstirred for 90 mins The volatiles
  8. customwere removed in vacuo
  9. customthe residue was partitioned between with EtOAc and H2O
  10. washThe organic layer was washed with NaCl(sat)
  11. dry with materialdried over MgSO4
  12. filtrationfiltered
  13. concentrationconcentrated

出典と根拠

ORDレコード
ord-1003449b27584f698c3f27d2a77be4a6
出典データセット
uspto-grants-2015_11
特許番号
US09173883B2

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