HCID 86683589, compound → HCID 67253758, compound

HRID 1509173Notes

Reaction equation

HRID 1509173 reaction equation
[CH:1]1([N:6]2[C:11](=[O:12])[CH2:10][O:9][C:8]3[N:13]=[C:14]([C:23]4[CH:28]=[CH:27][C:26]([C:29]5([NH:33]C(=O)OC(C)(C)C)[CH2:32][CH2:31][CH2:30]5)=[CH:25][CH:24]=4)[C:15]([C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=4)=[CH:16][C:7]2=3)[CH2:5][CH2:4][CH2:3][CH2:2]1>C(O)(C(F)(F)F)=O>[NH2:33][C:29]1([C:26]2[CH:25]=[CH:24][C:23]([C:14]3[C:15]([C:17]4[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=4)=[CH:16][C:7]4[N:6]([CH:1]5[CH2:2][CH2:3][CH2:4][CH2:5]5)[C:11](=[O:12])[CH2:10][O:9][C:8]=4[N:13]=3)=[CH:28][CH:27]=2)[CH2:30][CH2:31][CH2:32]1

Participants

3

Reactant 1

HCID 86683589HCID 86683589, compound

Product 1

HCID 67253758HCID 67253758, compoundYield 62%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Procedure

tert-Butyl 1-(4-(1-cyclopentyl-2-oxo-7-phenyl-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazin-6-yl)phenyl)cyclobutylcarbamate (12 mg, 0.022 mmol) was dissolved in TFA (2 mL) and stirred for 30 seconds. The solution was immediately concentrated to dryness under reduced pressure. The residue was dissolved in diethyl ether (˜2 mL) and concentrated to dryness under reduced pressure three times. The residue was then slurried in diethyl ether (2 mL) and after settling the supernatant solvent removed by pipette. This was repeated three times. The remaining solvent was removed by freeze drying overnight to give the desired compound as an off-white solid (6 mg, 49% yield). 1H-NMR (500 MHz, MeOD) δ 7.60 (1H, s), 7.40 (2H, d), 7.36 (2H, d), 7.25-7.36 (3H, m), 7.18-7.25 (2H, m), 4.91 (1H, quin), 4.84 (2H, s), 2.66-2.31 (2H, m), 2.47-2.61 (2H, m), 2.12-2.31 (3H, m), 1.83-2.12 (5H, m), 1.63-1.81 (2H, m). LCMS (Method A) RT=4.55 min, M+2H+=441.19.

Workup

  1. concentrationThe solution was immediately concentrated to dryness under reduced pressure
  2. dissolutionThe residue was dissolved in diethyl ether (˜2 mL)
  3. concentrationconcentrated to dryness under reduced pressure three times
  4. customremoved by pipette
  5. customThe remaining solvent was removed by freeze
  6. customdrying overnight

Sources & evidence

ORD record
ord-7cf1a5acd587425abd40bc3a806fc6d4
Source dataset
uspto-grants-2015_12
Patent number
US09221838B2

Reaction notes

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