Methanol → 8-(Benzyloxy)-5-(4-(4-(tert-butoxycarbonylamino)butyl)piperazin-1-yl)-1,6-naphthyridine-7-carboxylic acid

HRID 455316Notes

Reaction equation

HRID 455316 reaction equation
[CH2:1]([O:8][C:9]1[C:10]([C:37]([O:39]C)=[O:38])=[N:11][C:12]([N:19]2[CH2:24][CH2:23][N:22]([CH2:25][CH2:26][CH2:27][CH2:28][NH:29][C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[CH2:21][CH2:20]2)=[C:13]2[C:18]=1[N:17]=[CH:16][CH:15]=[CH:14]2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CO.[OH-].[Na+]>O>[CH2:1]([O:8][C:9]1[C:10]([C:37]([OH:39])=[O:38])=[N:11][C:12]([N:19]2[CH2:20][CH2:21][N:22]([CH2:25][CH2:26][CH2:27][CH2:28][NH:29][C:30]([O:32][C:33]([CH3:34])([CH3:35])[CH3:36])=[O:31])[CH2:23][CH2:24]2)=[C:13]2[C:18]=1[N:17]=[CH:16][CH:15]=[CH:14]2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 887MethanolHCID 14798Sodium HydroxideHCID 67109661Methyl 8-(benzyloxy)-5-(4-(4-(tert-butoxycarbonylamino)butyl)-piperazin-1-yl)-1,6-naphthyridine-7-carboxylate

Product 1

HCID 680093878-(Benzyloxy)-5-(4-(4-(tert-butoxycarbonylamino)butyl)piperazin-1-yl)-1,6-naphthyridine-7-carboxylic acidYield 62.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To a solution of methyl 8-(benzyloxy)-5-(4-(4-(tert-butoxycarbonylamino)butyl)-piperazin-1-yl)-1,6-naphthyridine-7-carboxylate (Example 4.1; 1.2 mmol) in a mixtire of methanol (2.5 ml) and water (2.5 ml) was added sodium hydroxide (2.5 mmol). The reaction mixture was stied at r.t. for 4 hr. The mixture was quenched with water and 2N HCl until pH=6 was reached. The mixture was extracted with AcOEt (2×). The organic layer was dried (MgSO4), and filtered to afford a solid (400 mg), that was used as such in the next step.

Workup

  1. customThe mixture was quenched with water and 2N HCl until pH=6
  2. extractionThe mixture was extracted with AcOEt (2×)
  3. dry with materialThe organic layer was dried (MgSO4)
  4. filtrationfiltered

Sources & evidence

ORD record
ord-2f2d67ff71f84c27b1eb4319f58316e9
Source dataset
uspto-grants-2013_07
Patent number
US08497270B2

Reaction notes

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