Triethylamine → 2-(2-(6-((R)-1-((S)-3-(tert-butoxycarbonylamino)pyrrolidin-1-yl)-2,2,2-trifluoroethyl)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)-6-fluoroquinolin-7-yloxy)ethyl isobutyrate

HRID 339065Notes

Reaction equation

HRID 339065 reaction equation
[F:1][C:2]([F:42])([F:41])[C@H:3]([N:28]1[CH2:32][CH2:31][C@H:30]([NH:33][C:34](=[O:40])[O:35][C:36]([CH3:39])([CH3:38])[CH3:37])[CH2:29]1)[C:4]1[CH:5]=[CH:6][C:7]2[N:8]([C:10]([C:13]3[CH:22]=[CH:21][C:20]4[C:15](=[CH:16][C:17]([O:24][CH2:25][CH2:26][OH:27])=[C:18]([F:23])[CH:19]=4)[N:14]=3)=[N:11][N:12]=2)[CH:9]=1.CCN(CC)CC.[C:50](Cl)(=[O:54])[CH:51]([CH3:53])[CH3:52]>C(Cl)Cl>[C:50]([O:27][CH2:26][CH2:25][O:24][C:17]1[CH:16]=[C:15]2[C:20]([CH:21]=[CH:22][C:13]([C:10]3[N:8]4[CH:9]=[C:4]([C@@H:3]([N:28]5[CH2:32][CH2:31][C@H:30]([NH:33][C:34]([O:35][C:36]([CH3:39])([CH3:37])[CH3:38])=[O:40])[CH2:29]5)[C:2]([F:1])([F:41])[F:42])[CH:5]=[CH:6][C:7]4=[N:12][N:11]=3)=[N:14]2)=[CH:19][C:18]=1[F:23])(=[O:54])[CH:51]([CH3:53])[CH3:52]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 62325Isobutyryl chlorideHCID 86707460tert-butyl (S)-1-((R)-2,2,2-trifluoro-1-(3-(6-fluoro-7-(2-hydroxyethoxy)quinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)ethyl)pyrrolidin-3-ylcarbamate

Product 1

HCID 709833562-(2-(6-((R)-1-((S)-3-(tert-butoxycarbonylamino)pyrrolidin-1-yl)-2,2,2-trifluoroethyl)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)-6-fluoroquinolin-7-yloxy)ethyl isobutyrateYield 84%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a stirred solution of tert-butyl (S)-1-((R)-2,2,2-trifluoro-1-(3-(6-fluoro-7-(2-hydroxyethoxy)quinolin-2-yl)-[1,2,4]triazolo[4,3-a]pyridin-6-yl)ethyl)pyrrolidin-3-ylcarbamate (80 mg, 0.14 mmol) in DCM (1 mL) and Et3N (0.057 mL, 0.41 mmol) was added dropwise isobutyryl chloride (0.036 mL, 0.34 mmol) at 0° C. under nitrogen. The reaction mixture was warmed to ambient temperature and stirred overnight. The reaction mixture was diluted with DCM, washed with saturated aqueous NaHCO3 solution and brine, dried and concentrated under reduced pressure. The residue was purified by reverse phase preparative HPLC (5-95% acetonitrile/water) to give 2-(2-(6-((R)-1-((S)-3-(tert-butoxycarbonylamino)pyrrolidin-1-yl)-2,2,2-trifluoroethyl)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)-6-fluoroquinolin-7-yloxy)ethyl isobutyrate (75 mg, 84%).

Workup

  1. washwashed with saturated aqueous NaHCO3 solution and brine
  2. customdried
  3. concentrationconcentrated under reduced pressure
  4. customThe residue was purified by reverse phase preparative HPLC (5-95% acetonitrile/water)

Sources & evidence

ORD record
ord-78c0088619774d1c87b89dff77f595d0
Source dataset
uspto-grants-2014_11
Patent number
US08889704B2

Reaction notes

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