Cesium carbonate → Telotristat

HRID 1620396Notes

Reaction equation

HRID 1620396 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([OH:13])[C:9]([F:12])([F:11])[F:10])=[C:4]([N:14]2[CH:18]=[CH:17][C:16]([CH3:19])=[N:15]2)[CH:3]=1.[NH2:20][C:21]1[N:26]=[C:25]([C:27]2[CH:32]=[CH:31][C:30]([CH2:33][C@H:34]([NH:38]C(OC(C)(C)C)=O)[C:35]([OH:37])=[O:36])=[CH:29][CH:28]=2)[CH:24]=[C:23](Cl)[N:22]=1.O1CCOCC1.C([O-])([O-])=O.[Cs+].[Cs+]>C1COCC1>[NH2:38][C@@H:34]([CH2:33][C:30]1[CH:31]=[CH:32][C:27]([C:25]2[CH:24]=[C:23]([O:13][C@H:8]([C:5]3[CH:6]=[CH:7][C:2]([Cl:1])=[CH:3][C:4]=3[N:14]3[CH:18]=[CH:17][C:16]([CH3:19])=[N:15]3)[C:9]([F:12])([F:11])[F:10])[N:22]=[C:21]([NH2:20])[N:26]=2)=[CH:28][CH:29]=1)[C:35]([OH:37])=[O:36]

Participants

6

Reactant 4

HCID 10796Cesium carbonateHCID 312751,4-DioxaneHCID 251913394-(2-Amino-6-chloropyrimidin-4-yl)-N-(tert-butoxycarbonyl)-L-phenylalanineHCID 252124151-(4-Chloro-2-(3-methyl-1H-pyrazol-1-yl)phenyl)-2,2,2-trifluoroethanol

Product 1

HCID 25025298Telotristat

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
100 °C

Procedure

1-[4-Chloro-2-(3-methyl-pyrazol-1-yl)-phenyl]-2,2,2-trifluoro-ethanol (0.120 g, 0.41 mmol), (S)-3-[4-(2-amino-6-chloro-pyrimidine-4-yl)-phenyl]-2-tert-butoxycarbonylamino-propionic acid (0.176 g, 0.45 mmol), 1,4-dioxane (4 ml), and Cs2CO3 (0.533 g, 1.64 mmol) were combined in a 20 ml sealed tube, and the mixture was heated at 100° C. for 12 hours. The mixture was concentrated. To the residue, 10% methanol in DCM (50 ml) was added and the mixture was filtered. The filtrate was concentrated to give a crude product, which was taken in THF/3N HCl (30 ml/15 ml) and the resulting mixture was stirred at 40-45° C. for 12 hours. LCMS indicated the completion of reaction with desired product. The mixture was concentrated to give a crude product, which was dissolved in MeOH and H2O (1:1) and purified by preparative HPLC using MeOH/H2O/TFA as solvent system to give (S)-2-amino-3-[4-(2-amino-6-{1-[4-chloro-2-(3-methyl-pyrazol-1-yl)-phenyl]-2,2,2-trifluoro-ethoxy}-pyrimidine-4-yl)-phenyl]-propionic acid as a TFA salt. LCMS: M+1=547. 1H-NMR (400 MHz, CD3OD): δ (ppm) 2.30 (s, 3H), 3.10-3.30 (m, 2H), 4.20 (t, 1H), 6.32 (d, 1H), 6.74 (s, 1H), 7.0 (q, 1H), 7.38 (d, 2H), 7.50 (m, 2H), 7.72 (m, 1H), 7.90 (m, 3H).

Workup

  1. customsealed tube
  2. concentrationThe mixture was concentrated
  3. additionTo the residue, 10% methanol in DCM (50 ml) was added
  4. filtrationthe mixture was filtered
  5. concentrationThe filtrate was concentrated
  6. customto give a crude product, which

Sources & evidence

ORD record
ord-4b041fb2585844cabebbfe121255c397
Source dataset
uspto-grants-2014_07
Patent number
US08772483B2

Reaction notes

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