Butylamine → {(1S,2S,4S)-4-Butylcarbamoyl-1-[4-(2-chloro-5-fluorophenyl)-2,2-dimethyl-5-oxopiperazin-1-ylmethyl]-2-hydroxy-5-methylhexyl}carbamic acid t-butyl ester

HRID 1694935Notes

Reaction equation

HRID 1694935 reaction equation
[CH2:1]([NH2:5])[CH2:2][CH2:3][CH3:4].OC1C=CC=CN=1.[C:13]([O:17][C:18](=[O:48])[NH:19][C@H:20]([C@@H:39]1[CH2:43][C@@H:42]([CH:44]([CH3:46])[CH3:45])[C:41](=[O:47])[O:40]1)[CH2:21][N:22]1[CH2:27][C:26](=[O:28])[N:25]([C:29]2[CH:34]=[C:33]([F:35])[CH:32]=[CH:31][C:30]=2[Cl:36])[CH2:24][C:23]1([CH3:38])[CH3:37])([CH3:16])([CH3:15])[CH3:14]>O>[C:13]([O:17][C:18](=[O:48])[NH:19][C@@H:20]([CH2:21][N:22]1[CH2:27][C:26](=[O:28])[N:25]([C:29]2[CH:34]=[C:33]([F:35])[CH:32]=[CH:31][C:30]=2[Cl:36])[CH2:24][C:23]1([CH3:38])[CH3:37])[C@@H:39]([OH:40])[CH2:43][C@H:42]([C:41](=[O:47])[NH:5][CH2:1][CH2:2][CH2:3][CH3:4])[CH:44]([CH3:45])[CH3:46])([CH3:14])([CH3:15])[CH3:16]

Participants

5

Reactant 3

HCID 8007ButylamineHCID 66645857{(S)-2-[4-(2-Chloro-5-fluorophenyl)-2,2-dimethyl-5-oxopiperazin-1-yl]-1-[(2S,4S)-4-isopropyl-5-oxotetrahydrofuran-2-yl]ethyl}carbamic acid t-butyl esterHCID 178516071HCID 178516071, compound

Product 1

HCID 66645473{(1S,2S,4S)-4-Butylcarbamoyl-1-[4-(2-chloro-5-fluorophenyl)-2,2-dimethyl-5-oxopiperazin-1-ylmethyl]-2-hydroxy-5-methylhexyl}carbamic acid t-butyl esterYield 89%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
70 °C

Procedure

0.89 ml of n-butylamine (9.5 mmol) and 28 mg of 2-hydroxypyridine (0.48 mmol) were added to 250 mg of {(S)-2-[4-(2-chloro-5-fluorophenyl)-2,2-dimethyl-5-oxopiperazin-1-yl]-1-[(2S,4S)-4-isopropyl-5-oxotetrahydrofuran-2-yl]ethyl}carbamic acid t-butyl ester obtained in Example (62f) (0.48 mmol), and the mixture was stirred at 70° C. for one hour. The reaction mixture was cooled and then water was added, followed by extraction with ethyl acetate. Then, the organic layer was washed with brine and then dried over anhydrous sodium sulfate. After filtration, the solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (elution solvent:methylene chloride/methanol=20/1) to obtain 254 mg of the title compound (yield: 89%).

Workup

  1. temperatureThe reaction mixture was cooled
  2. extractionfollowed by extraction with ethyl acetate
  3. washThen, the organic layer was washed with brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationAfter filtration
  6. customthe solvent was evaporated under reduced pressure
  7. customthe residue was purified by silica gel column chromatography (elution solvent:methylene chloride/methanol=20/1)

Sources & evidence

ORD record
ord-f023136bb4c1496ea8f3814b8a807e22
Source dataset
uspto-grants-2012_04
Patent number
US08158790B2

Reaction notes

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