Dichloromethane → Biphenyl-2-ylcarbamic Acid 1-(2-{[4-(4-{[(R)-2-(tert-butyldimethyl-silanyloxy)-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethylamino]methyl}-phenylcarbamoyl)butyl]methylcarbamoyl}ethyl)piperidin-4-yl Ester

HRID 1097046Notes

Reaction equation

HRID 1097046 reaction equation
[CH:1]([C:3]1[CH:8]=[CH:7][C:6]([NH:9][C:10]([CH2:12][CH2:13][CH2:14][CH2:15][N:16]([CH3:43])[C:17]([CH2:19][CH2:20][N:21]2[CH2:26][CH2:25][CH:24]([O:27][C:28](=[O:42])[NH:29][C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][C:31]=3[C:36]3[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=3)[CH2:23][CH2:22]2)=[O:18])=[O:11])=[CH:5][CH:4]=1)=O.C(O)(=O)C.[NH2:48][CH2:49][C@@H:50]([C:59]1[CH:68]=[CH:67][C:66]([OH:69])=[C:65]2[C:60]=1[CH:61]=[CH:62][C:63](=[O:70])[NH:64]2)[O:51][Si:52]([C:55]([CH3:58])([CH3:57])[CH3:56])([CH3:54])[CH3:53].C(Cl)Cl.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>CO>[Si:52]([O:51][C@H:50]([C:59]1[CH:68]=[CH:67][C:66]([OH:69])=[C:65]2[C:60]=1[CH:61]=[CH:62][C:63](=[O:70])[NH:64]2)[CH2:49][NH:48][CH2:1][C:3]1[CH:4]=[CH:5][C:6]([NH:9][C:10]([CH2:12][CH2:13][CH2:14][CH2:15][N:16]([CH3:43])[C:17]([CH2:19][CH2:20][N:21]2[CH2:22][CH2:23][CH:24]([O:27][C:28](=[O:42])[NH:29][C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][C:31]=3[C:36]3[CH:37]=[CH:38][CH:39]=[CH:40][CH:41]=3)[CH2:25][CH2:26]2)=[O:18])=[O:11])=[CH:7][CH:8]=1)([C:55]([CH3:58])([CH3:57])[CH3:56])([CH3:54])[CH3:53]

Participants

6

Reactant 4

HCID 6344DichloromethaneHCID 5049666Sodium triacetoxyborohydrideHCID 666722995-[(R)-2-amino-1-(tert-butyldimethylsilanyloxy)ethyl]-8-hydroxy-1H-quinolin-2-one acetateHCID 86646966Biphenyl-2-ylcarbamic acid 1-(2-{[4-(4-formylphenylcarbamoyl)butyl]methylcarbamoyl}ethyl)piperidin-4-yl ester

Product 1

HCID 86646965Biphenyl-2-ylcarbamic Acid 1-(2-{[4-(4-{[(R)-2-(tert-butyldimethyl-silanyloxy)-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethylamino]methyl}-phenylcarbamoyl)butyl]methylcarbamoyl}ethyl)piperidin-4-yl EsterYield 82.4%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a stirred solution of biphenyl-2-ylcarbamic acid 1-(2-{[4-(4-formylphenylcarbamoyl)butyl]methylcarbamoyl}ethyl)piperidin-4-yl ester (2.83 g, 4.84 mmol) and 5-[(R)-2-amino-1-(tert-butyldimethylsilanyloxy)ethyl]-8-hydroxy-1H-quinolin-2-one acetic acid salt (1.91 g, 4.84 mmol) in a 1:1 mixture of MeOH:DCM (40.0 mL, 312 mmol) was added sodium triacetoxyborohydride (3.08 g, 14.5 mmol). The reaction mixture was stirred at room temperature for 2 h and then the layers were separated. The organic layer was washed with saturated aqueous sodium bicarbonate solution, dried over sodium sulfate, filtered and concentrated under reduced pressure to give a yellow solid. The solid was purified by silica gel flash chromatography (0-30% MeOH in DCM+0.5% NH4OH) to give the title compound (3.60 g, 82% yield) as a yellow solid.

Workup

  1. customthe layers were separated
  2. washThe organic layer was washed with saturated aqueous sodium bicarbonate solution
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customto give a yellow solid
  7. customThe solid was purified by silica gel flash chromatography (0-30% MeOH in DCM+0.5% NH4OH)

Sources & evidence

ORD record
ord-743409b0e0124038b2578eea7b709d30
Source dataset
uspto-grants-2012_03
Patent number
US08138345B2

Reaction notes

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