Sodium Hydroxide → (1r,2r)-2-({3'-Fluoro-4'-[(6-methyl-1,3-benzoxazol-2-yl)amino]-1,1'-biphenyl-4-yl}carbonyl)cyclopentanecarboxylic acid

HRID 2427387

反応式

HRID 2427387 の反応式
[F:1][C:2]1[CH:3]=[C:4]([C:19]2[CH:24]=[CH:23][C:22]([C:25]([C@@H:27]3[CH2:31][CH2:30][CH2:29][C@H:28]3[C:32]([O:34]C)=[O:33])=[O:26])=[CH:21][CH:20]=2)[CH:5]=[CH:6][C:7]=1[NH:8][C:9]1[O:10][C:11]2[CH:17]=[C:16]([CH3:18])[CH:15]=[CH:14][C:12]=2[N:13]=1.[OH-].[Na+]>O1CCOCC1.C1COCC1>[F:1][C:2]1[CH:3]=[C:4]([C:19]2[CH:24]=[CH:23][C:22]([C:25]([C@@H:27]3[CH2:31][CH2:30][CH2:29][C@H:28]3[C:32]([OH:34])=[O:33])=[O:26])=[CH:21][CH:20]=2)[CH:5]=[CH:6][C:7]=1[NH:8][C:9]1[O:10][C:11]2[CH:17]=[C:16]([CH3:18])[CH:15]=[CH:14][C:12]=2[N:13]=1

参加物

4

反応物 2

HCID 14798Sodium HydroxideHCID 67147332methyl (1R,2R)-2-({3'-fluoro-4'-[(6-methyl-1,3-benzoxazol-2-yl)amino]-1,1'-biphenyl-4-yl}carbonyl)-cyclopentanecarboxylate

生成物 1

HCID 11385583(1r,2r)-2-({3'-Fluoro-4'-[(6-methyl-1,3-benzoxazol-2-yl)amino]-1,1'-biphenyl-4-yl}carbonyl)cyclopentanecarboxylic acid収率 15%

試薬・触媒・溶媒 1

HCID 22018518Dioxane tetrahydrofuran溶媒

反応条件

温度
50 °C

実験手順

To a solution of methyl (1R,2R)-2-[(4′-amino-3′-fluoro-1,1′-biphenyl-4-yl)carbonyl]-cyclopentanecarboxylate (800 mg, 2.34 mmol, 78% ee) in dichloroethane (15 mL), 6-methyl-2-(methylsulfonyl)-1,3-benzoxazole (891 mg, 4.22 mmol) was added, and the mixture was heated at 85° C. overnight. The solvent was removed by rotary evaporation, and the residue was purified by using a Biotage QuadUV flash chromatography system (eluant: 80:20 hexane/EtOAc) to give methyl (1R,2R)-2-({3′-fluoro-4′-[(6-methyl-1,3-benzoxazol-2-yl)amino]-1,1′-biphenyl-4-yl}carbonyl)-cyclopentanecarboxylate (472 mg). This ester intermediate was redissolved in 1:1 dioxane/THF (20 mL), a solution of 1 N aqueous NaOH (7.02 mL, 7.02 mol) was added, and the mixture was heated at 50° C. overnight. The solvent was removed by rotary evaporation, and water (20 mL) and EtOAc (40 mL) were added to the residue. The aqueous layer was separated, acidified to pH 5 by the addition of 1 N aqueous HCl, and then extracted with EtOAc (2×60 mL). The combined organic phases were washed with saturated NaCl and dried (Na2SO4). The solvent was removed by rotary evaporation and the residue was redissolved in DMF (10 mL) and methanol (20 mL). The crude product was purified by preparative reverse-phase HPLC (water/acetonitrile gradient, containing 0.1% TFA) to afford (1R,2R)-2-({3′-fluoro-4′-[(6-methyl-1,3-benzoxazol-2-yl)amino]-1,1′-biphenyl-4-yl}carbonyl)cyclopentanecarboxylic acid as an off-white solid (161 mg, 15% yield, 80% ee). 1H NMR (300 MHz, DMSO-d6) δ 8.40 (m, 1 H), 8.00-7.60 (m, 6 H), 7.30 (d, 2 H), 7.00 (d, 1 H), 4.05 (m, 1 H), 3.20 (m, 1 H), 2.40 (s, 3 H), 2.20 (m, 1 H), 1.95 (m, 1 H), 1.80-1.60 (m, 4 H); LC-MS ret. time 3.57 min, m/z 459.3 (MH+).

後処理

  1. customThe solvent was removed by rotary evaporation, and water (20 mL) and EtOAc (40 mL)
  2. additionwere added to the residue
  3. customThe aqueous layer was separated
  4. additionacidified to pH 5 by the addition of 1 N aqueous HCl
  5. extractionextracted with EtOAc (2×60 mL)
  6. washThe combined organic phases were washed with saturated NaCl
  7. dry with materialdried (Na2SO4)
  8. customThe solvent was removed by rotary evaporation
  9. dissolutionthe residue was redissolved in DMF (10 mL)
  10. customThe crude product was purified by preparative reverse-phase HPLC (water/acetonitrile gradient, containing 0.1% TFA)

出典と根拠

ORDレコード
ord-76c24a699d894bf9bf98d8cb0cb28007
出典データセット
uspto-grants-2011_06
特許番号
US07968576B2

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