methyl 4'-{(1R)-1-[({1-[(tert-butoxycarbonyl)amino]-cyclopropyl}carbonyl)amino]ethyl}-3-fluoro-1,1'-biphenyl-2-carboxylate → 4'-((1R)-1-{[(1-aminocyclopropyl)carbonyl]amino}ethyl)-3-fluoro-1,1'-biphenyl-2-carboxylic acid

HRID 896710Notes

Reaction equation

HRID 896710 reaction equation
C(OC([NH:8][C:9]1([C:12]([NH:14][C@@H:15]([C:17]2[CH:22]=[CH:21][C:20]([C:23]3[C:24]([C:30]([O:32]C)=[O:31])=[C:25]([F:29])[CH:26]=[CH:27][CH:28]=3)=[CH:19][CH:18]=2)[CH3:16])=[O:13])[CH2:11][CH2:10]1)=O)(C)(C)C>C(Cl)Cl.C(O)(C(F)(F)F)=O>[NH2:8][C:9]1([C:12]([NH:14][C@@H:15]([C:17]2[CH:22]=[CH:21][C:20]([C:23]3[C:24]([C:30]([OH:32])=[O:31])=[C:25]([F:29])[CH:26]=[CH:27][CH:28]=3)=[CH:19][CH:18]=2)[CH3:16])=[O:13])[CH2:10][CH2:11]1

Participants

4

Reactant 1

HCID 69563684methyl 4'-{(1R)-1-[({1-[(tert-butoxycarbonyl)amino]-cyclopropyl}carbonyl)amino]ethyl}-3-fluoro-1,1'-biphenyl-2-carboxylate

Product 1

HCID 695631874'-((1R)-1-{[(1-aminocyclopropyl)carbonyl]amino}ethyl)-3-fluoro-1,1'-biphenyl-2-carboxylic acid

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 6422Trifluoroacetic acidSolvent

Procedure

A solution of methyl 4′-{(1R)-1-[({1-[(tert-butoxycarbonyl)amino]cyclopropyl}carbonyl)amino]ethyl}-3-fluoro-1,1′-biphenyl-2-carboxylate (466 mg, 1.0 mmol) in DCM (15 mL) and TFA (15 mL) was stirred under N2 for 20 minutes at ambient temperature, then the organic solvent was removed under vacuum. The residue was dissolved in MeOH (20 mL), 4N NaOH (10 mL) and water (10 mL). This mixture was heated at reflux for 4 hours and then neutralized with 6N HCl. Purification was achieved by preparative HPLC on a delta-pack C18 column, 300 Å, pore size 15 μM with 0.05% HCl acid-aqueous acetonitrile solvent systems using various linear gradients. Fractions containing product of 99% purity as measured by HPLC were combined and lyophilized to give 4′-((1R)-1-{[(1-aminocyclopropyl)carbonyl]amino}ethyl)-3-fluoro-1,1′-biphenyl-2-carboxylic acid as a white solid.

Workup

  1. customthe organic solvent was removed under vacuum
  2. dissolutionThe residue was dissolved in MeOH (20 mL)
  3. temperatureThis mixture was heated
  4. temperatureat reflux for 4 hours
  5. customPurification
  6. additionFractions containing product of 99% purity

Sources & evidence

ORD record
ord-9cca5f23db0c4cd58968c71e5646a9ee
Source dataset
uspto-grants-2005_07
Patent number
US06919343B2

Reaction notes

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