Lithium Hydroxide → HCID 44404501, compound

HRID 29401Notes

Reaction equation

HRID 29401 reaction equation
C[O:2][C:3](=[O:40])[C@H:4]([NH:8][S:9]([C:12]1[CH:17]=[CH:16][C:15]([C:18]2[CH:23]=[CH:22][C:21]([NH:24][C:25]([C:27]3[O:28][C:29]4[CH:36]=[CH:35][C:34]([Br:37])=[C:33]([O:38][CH3:39])[C:30]=4[C:31]=3[CH3:32])=[O:26])=[CH:20][CH:19]=2)=[CH:14][CH:13]=1)(=[O:11])=[O:10])[CH:5]([CH3:7])[CH3:6].[Li+].[OH-]>C1COCC1>[Br:37][C:34]1[CH:35]=[CH:36][C:29]2[O:28][C:27]([C:25]([NH:24][C:21]3[CH:20]=[CH:19][C:18]([C:15]4[CH:14]=[CH:13][C:12]([S:9]([NH:8][C@H:4]([CH:5]([CH3:6])[CH3:7])[C:3]([OH:40])=[O:2])(=[O:10])=[O:11])=[CH:17][CH:16]=4)=[CH:23][CH:22]=3)=[O:26])=[C:31]([CH3:32])[C:30]=2[C:33]=1[O:38][CH3:39]

Participants

4

Reactant 2

HCID 3939Lithium HydroxideHCID 68715340(R)-2-{4'-[(5-bromo-4-methoxy-3-methyl-benzofuran-2-carbonyl)-amino]-biphenyl-4-sulfonylamino}-3-methyl-butyric acid methyl ester

Product 1

HCID 44404501HCID 44404501, compoundYield 56.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To 89 mg of (R)-2-{4′-[(5-bromo-4-methoxy-3-methyl-benzofuran-2-carbonyl)-amino]-biphenyl-4-sulfonylamino}-3-methyl-butyric acid methyl ester was added 1 mL of THF and 3 mL of LiOH solution (3.6 g LiOH/50 mL MeOH/50 mL H2O). The mixture was stirred at room temperature for 4 days. The solvents were removed under vacuum and the residue was dissolved in 5 mL of water. The solution was acidified and the resulting suspension was filtered. The solid product was dried under vacuum and triturated with 0.5 mL of chloroform to give 49 mg (56% yield) of (R)-2-{4′-[(5-bromo-4-methoxy-3-methyl-benzofuran-2-carbonyl)-amino]-biphenyl-4-sulfonylamino}-3-methyl-butyric acid. 1H NMR (400 MHz, DMSO-d6) δ ppm 0.8 (dd, J=12.4, 6.8 Hz, 6 H) 2.0 (m, 1 H) 2.7 (s, 3 H) 3.6 (dd, J=9.3, 6.1 Hz, 1 H) 3.9 (s, 3 H) 7.7 (d, J=8.8 Hz, 1 H) 7.8 (d, J=8.8 Hz, 2 H) 7.9 (m, 4 H) 8.0 (d, J=8.8 Hz, 2 H) 8.1 (d, J=9.3 Hz, 1 H) 8.3 (s, 1 H) 10.6 (s, 1 H) 12.6 (s, 1 H).

Workup

  1. customThe solvents were removed under vacuum
  2. dissolutionthe residue was dissolved in 5 mL of water
  3. filtrationthe resulting suspension was filtered
  4. customThe solid product was dried under vacuum
  5. customtriturated with 0.5 mL of chloroform

Sources & evidence

ORD record
ord-fc130f2390e74df1b8d5e8f89a70a66c
Source dataset
uspto-grants-2008_09
Patent number
US07420001B2

Reaction notes

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