Sodium Hydroxide → 5-(4-(2-(5-Amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)phenoxy)pentanoic acid

HRID 1479643Notes

Reaction equation

HRID 1479643 reaction equation
[NH2:1][C:2]1[C:11]2[N:10]=[CH:9][C:8]([CH2:12][CH2:13][C:14]3[CH:29]=[CH:28][C:17]([O:18][CH2:19][CH2:20][CH2:21][CH2:22][C:23]([O:25]CC)=[O:24])=[CH:16][CH:15]=3)=[CH:7][C:6]=2[C:5]2[CH:30]=[CH:31][C:32]([CH3:34])=[CH:33][C:4]=2[N:3]=1.[OH-].[Na+]>C(O)C.C(OCC)(=O)C.O>[NH2:1][C:2]1[C:11]2[N:10]=[CH:9][C:8]([CH2:12][CH2:13][C:14]3[CH:29]=[CH:28][C:17]([O:18][CH2:19][CH2:20][CH2:21][CH2:22][C:23]([OH:25])=[O:24])=[CH:16][CH:15]=3)=[CH:7][C:6]=2[C:5]2[CH:30]=[CH:31][C:32]([CH3:34])=[CH:33][C:4]=2[N:3]=1

Participants

6

Reactant 2

HCID 14798Sodium HydroxideHCID 58213647Ethyl 5-(4-(2-(5-amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)phenoxy)pentanoate

Product 1

HCID 582137705-(4-(2-(5-Amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)phenoxy)pentanoic acid

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of ethyl 5-(4-(2-(5-amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)phenoxy)pentanoate (1.0 equiv.) (from Example 139) in ethanol (0.10 M) was added anhydrous sodium hydroxide (2.0 equiv.) and the resulting mixture was allowed to stir at 80° C. for 2 hours. After cooling to ambient temperature, the mixture was diluted with ethyl acetate and water. The biphasic layers were separated and the aqueous layer was washed twice with ethyl acetate. The combined organic layers were dried over anhydrous Na2SO4 and the volatiles were removed in vacuo. The resulting residue was purified by a COMBIFLASH® system (ISCO) using 0-10% methanol in dichloromethane to furnish 5-(4-(2-(5-amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)phenoxy)pentanoic acid as a solid. 1H NMR (Methanol-d4): δ 8.61 (s, 1H), 8.57 (s, 1H), 8.20 (d, 1H), 7.40 (s, 1H), 7.20 (d, 1H), 7.07 (d, 2H), 6.81 (d, 2H), 3.93 (t, 2H), 3.18 (t, 2H), 3.00 (t, 2H), 2.48 (s, 3H), 2.25 (t, 2H), 1.74-1.81 (m, 2H), 0.86-0.96 (m, 2H). LRMS [M+H]=430.2

Workup

  1. temperatureAfter cooling to ambient temperature
  2. customThe biphasic layers were separated
  3. washthe aqueous layer was washed twice with ethyl acetate
  4. dry with materialThe combined organic layers were dried over anhydrous Na2SO4
  5. customthe volatiles were removed in vacuo
  6. customThe resulting residue was purified by a COMBIFLASH® system (ISCO)

Sources & evidence

ORD record
ord-4f3945aa943949fe998a4c79b766d274
Source dataset
uspto-grants-2016_08
Patent number
US09408907B2

Reaction notes

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