Hydrochloric Acid → (S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,3-dihydroxy-propyl)-1H-pyrazol-3-yl]-amide

HRID 19125Notes

Reaction equation

HRID 19125 reaction equation
CC1(C)[O:6][C@H:5]([CH2:7][N:8]2[CH:12]=[CH:11][C:10]([NH:13][C:14](=[O:37])[C@@H:15]([N:20]3[CH2:24][C:23]([O:25][C:26]4[C:31]([F:32])=[CH:30][CH:29]=[C:28]([O:33][CH3:34])[C:27]=4[F:35])=[CH:22][C:21]3=[O:36])[CH2:16][CH:17]([CH3:19])[CH3:18])=[N:9]2)[CH2:4][O:3]1.Cl>O1CCCC1.C(OCC)(=O)C>[OH:6][C@@H:5]([CH2:4][OH:3])[CH2:7][N:8]1[CH:12]=[CH:11][C:10]([NH:13][C:14](=[O:37])[C@@H:15]([N:20]2[CH2:24][C:23]([O:25][C:26]3[C:31]([F:32])=[CH:30][CH:29]=[C:28]([O:33][CH3:34])[C:27]=3[F:35])=[CH:22][C:21]2=[O:36])[CH2:16][CH:17]([CH3:19])[CH3:18])=[N:9]1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 57920095(S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide

Product 1

HCID 57920178(S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,3-dihydroxy-propyl)-1H-pyrazol-3-yl]-amideYield 91%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of (S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide (prepared in Example 118, 0.163 g, 0.30 mmol) in tetrahydrofuran (15 mL) was treated with 2N aqueous hydrochloric acid (7.5 mL). The reaction mixture was stirred for 3.5 h at room temperature. The reaction mixture was diluted with ethyl acetate, washed with saturated sodium bicarbonate, a saturated sodium chloride solution and dried over magnesium sulfate. The mixture was filtered and evaporated and the residue purified by ISCO column chromatography (Teledyne Isco RediSep Flash Column 12 g, 30% to 100%, (9:1 dichloromethane:methanol)/hexanes) which afforded (S)-2-[4-(2,6-difluoro-3-methoxy-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-((R)-2,3-dihydroxy-propyl)-1H-pyrazol-3-yl]-amide (0.135 g, 90%) as an off-white solid: HR-ES-MS m/z calculated for C23H28F2N4O6, [M+H]+ 495.205 observed 495.205; 1H NMR (300 MHz, DMSO-d6) δ ppm 0.90 (d, J=6.4 Hz, 3H), 0.93 (d, J=6.4 Hz, 3H), 1.43 (br. s., 1H), 1.49-1.67 (m, 1H), 1.67-1.87 (m, 1H), 3.18-3.32 (m, 2H), 3.69-3.86 (m, 2H), 3.87 (s, 3H), 4.09 (dd, J=13.6, 2.7 Hz, 1H), 4.27 (d, J=18.7 Hz, 1H), 4.63 (d, J=18.7 Hz, 1H), 4.71 (t, J=4.8 Hz, 1H), 4.81-4.91 (m, 1H), 4.94 (d, J=4.8 Hz, 1H), 5.06 (s, 1H), 6.40 (br. s., 1H), 7.09-7.24 (m, 1H), 7.24-7.38 (m, 1H), 7.53 (br. s., 1H), 10.79 (br. s., 1H).

Workup

  1. washwashed with saturated sodium bicarbonate
  2. dry with materiala saturated sodium chloride solution and dried over magnesium sulfate
  3. filtrationThe mixture was filtered
  4. customevaporated
  5. customthe residue purified by ISCO column chromatography (Teledyne Isco RediSep Flash Column 12 g, 30% to 100%, (9:1 dichloromethane:methanol)/hexanes) which

Sources & evidence

ORD record
ord-955c5eb1bdbe43de98ef44f8367b1cf2
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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