Water → ethyl 4-{5-[(1,4-diazabicyclo[2.2.2]oct-2-ylmethyl)amino]pyrazin-2-yl}-2-[(3S,4R)-4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl]-1,3-thiazole-5-carboxylate

HRID 655744Notes

Reaction equation

HRID 655744 reaction equation
Cl[C:2]1[N:3]=[CH:4][C:5]([C:8]2[N:9]=[C:10]([N:18]3[CH2:23][CH2:22][C@H:21]([NH:24][C:25]([C:27]4[NH:28][C:29]([CH3:34])=[C:30]([Cl:33])[C:31]=4[Cl:32])=[O:26])[C@H:20]([O:35][CH3:36])[CH2:19]3)[S:11][C:12]=2[C:13]([O:15][CH2:16][CH3:17])=[O:14])=[N:6][CH:7]=1.[N:37]12[CH2:44][CH2:43][N:40]([CH2:41][CH2:42]1)[CH2:39][CH:38]2[CH2:45][NH2:46].C(N(CC)C(C)C)(C)C.O>CN1CCCC1=O>[N:37]12[CH2:44][CH2:43][N:40]([CH2:41][CH2:42]1)[CH2:39][CH:38]2[CH2:45][NH:46][C:2]1[N:3]=[CH:4][C:5]([C:8]2[N:9]=[C:10]([N:18]3[CH2:23][CH2:22][C@@H:21]([NH:24][C:25]([C:27]4[NH:28][C:29]([CH3:34])=[C:30]([Cl:33])[C:31]=4[Cl:32])=[O:26])[C@@H:20]([O:35][CH3:36])[CH2:19]3)[S:11][C:12]=2[C:13]([O:15][CH2:16][CH3:17])=[O:14])=[N:6][CH:7]=1

Participants

6

Reactant 4

HCID 962WaterHCID 81531DiisopropylethylamineHCID 158394511,4-Diazabicyclo[2.2.2]octan-2-ylmethanamineHCID 59402528ethyl 4-(5-chloropyrazin-2-yl)-2-[(3R,4S)-4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl]-1,3-thiazole-5-carboxylate

Product 1

HCID 59402477ethyl 4-{5-[(1,4-diazabicyclo[2.2.2]oct-2-ylmethyl)amino]pyrazin-2-yl}-2-[(3S,4R)-4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl]-1,3-thiazole-5-carboxylateYield 20.7%

Reagents, catalysts & solvents 1

HCID 13387N-methyl-2-pyrrolidoneSolvent

Conditions

Temperature
80 °C

Procedure

Ethyl 4-(5-chloropyrazin-2-yl)-2-[(3S,4R)-4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl]-1,3-thiazole-5-carboxylate (Example 59, 330 mg, 0.57 mmol) was added to a solution of 1-(1,4-diazabicyclo[2.2.2]oct-2-yl)methanamine (EP748807, 407 mg, 2.88 mmol) and N,N-Diisopropylethylamine (0.38 mL, 2.88 mmol) in N-methyl 2-pyrrolidinone (5 mL) and the resulting reaction mixture was stirred for 20 h at 80° C. The reaction mixture was cooled to room temperature, poured into water (40 mL) and extracted with ethyl acetate (3×50 mL). The combined organic layer was washed with brine, dried over anhydrous sodium sulphate and concentrated under reduce pressure to yield crude product which was purified by flash column chromatography over silica gel (0-30% methanol in chloroform) to afford 80 mg (20.5%) of ethyl 4-{5-[(1,4-diazabicyclo[2.2.2]oct-2-ylmethyl)amino]pyrazin-2-yl}-2-[(3S,4R)-4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}-3-methoxypiperidin-1-yl]-1,3-thiazole-5-carboxylate as an off-white solid.

Workup

  1. customthe resulting reaction mixture
  2. temperatureThe reaction mixture was cooled to room temperature
  3. extractionextracted with ethyl acetate (3×50 mL)
  4. washThe combined organic layer was washed with brine
  5. dry with materialdried over anhydrous sodium sulphate
  6. concentrationconcentrated
  7. customto yield crude product which
  8. customwas purified by flash column chromatography over silica gel (0-30% methanol in chloroform)

Sources & evidence

ORD record
ord-f0706e60f5294cd09f0b856cf61afab0
Source dataset
uspto-grants-2011_12
Patent number
US08071605B2

Reaction notes

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