Sodium Bisulfate → HCID 69480377, compound

HRID 2364510Notes

Reaction equation

HRID 2364510 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][C:9]2[CH:18]=[C:17]3[C:12]([C:13]([OH:34])=[C:14]([C:29](OCC)=[O:30])[C:15](=[O:28])[N:16]3[CH2:19][CH2:20][N:21]3[CH2:26][CH2:25][CH2:24][CH2:23][C:22]3=[O:27])=[N:11][CH:10]=2)=[CH:4][CH:3]=1.[NH2:35][C@H:36]([CH2:39][CH:40]([CH3:42])[CH3:41])[CH2:37][OH:38].OS([O-])(=O)=O.[Na+]>CCO>[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][C:9]2[CH:18]=[C:17]3[C:12]([C:13]([OH:34])=[C:14]([C:29]([NH:35][C@@H:36]([CH2:37][OH:38])[CH2:39][CH:40]([CH3:42])[CH3:41])=[O:30])[C:15](=[O:28])[N:16]3[CH2:19][CH2:20][N:21]3[CH2:26][CH2:25][CH2:24][CH2:23][C:22]3=[O:27])=[N:11][CH:10]=2)=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 516919Sodium BisulfateHCID 2724002D(-)-LeucinolHCID 69482570Ethyl 7-[(4-fluorophenyl)methyl]-4-hydroxy-2-oxo-1-[2-(2-oxo-1-piperidinyl)ethyl]-1,2-dihydro-1,5-naphthyridine-3-carboxylate

Product 1

HCID 69480377HCID 69480377, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A mixture of ethyl 7-[(4-fluorophenyl)methyl]-4-hydroxy-2-oxo-1-[2-(2-oxo-1-piperidinyl)ethyl]-1,2-dihydro-1,5-naphthyridine-3-carboxylate (30 mg, 0.064 mmol) and (2R)-2-amino-4-methyl-1-pentanol (75 μL, 0.64 mmol) was heated in EtOH (3 mL) at 175° C. for 45 min. in a microwave. The reaction mixture was cooled to rt and let stand overnight. Added 1N NaHSO4 (2 mL) filtered the resulting suspension, washed with EtOH:water 1:1, and Et2O then concentrated the filtrate in vacuo. Dissolved the residue in CH2Cl2, washed with 0.5N NaHSO4, water, and brine then dried the organics over Na2SO4, filtered and concentrated in vacuo. Triturated the residue with Et2O, filtered and dried in vacuo to provide the product as an off-white solid: 1H NMR (300 MHz, DMSO-d6) δ ppm 0.91 (d, J=6.53 Hz, 6 H), 1.40-1.50 (m, 2 H), 1.53-1.67 (m, 6 H), 1.99-2.11 (m, 2 H), 3.18-3.29 (m, 2 H), 3.35-3.50 (m, 4 H), 3.53-3.59 (m, 1 H), 4.09 (dd, J=4.32, 3.26 Hz, 1 H), 4.17 (s, 2 H), 4.93 (t, J=5.16 Hz, 1 H), 7.10-7.18 (m, 2 H), 7.37-7.44 (m, 2 H), 8.21 (d, J=1.47 Hz, 1 H), 8.56 (d, J=1.69 Hz, 1 H), 10.31 (d, J=9.06 Hz, 1 H), 17.27 (s, 1 H); ES+ MS: 539 (M+H+).

Workup

  1. filtrationfiltered the resulting suspension
  2. washwashed with EtOH:water 1:1, and Et2O
  3. concentrationthen concentrated the filtrate in vacuo
  4. dissolutionDissolved the residue in CH2Cl2
  5. washwashed with 0.5N NaHSO4, water, and brine
  6. dry with materialthen dried the organics over Na2SO4
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customTriturated the residue with Et2O
  10. filtrationfiltered
  11. customdried in vacuo

Sources & evidence

ORD record
ord-50d335f23f7546ca96546f83851f6102
Source dataset
uspto-grants-2014_04
Patent number
US08691991B2

Reaction notes

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