1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (S)-2-[4-(2-fluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-amide

HRID 19184Notes

Reaction equation

HRID 19184 reaction equation
[OH:1][C@@H:2]([CH2:31]O)[CH2:3][N:4]1[CH:8]=[CH:7][C:6]([NH:9][C:10](=[O:30])[C@@H:11]([N:16]2[CH2:20][C:19]([O:21][C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=3[F:28])=[CH:18][C:17]2=[O:29])[CH2:12][CH:13]([CH3:15])[CH3:14])=[N:5]1.[CH3:33]N(C)CCCN=C=NCC.ON1C2C=CC=CC=2N=N1.Cl.O[C@@H](CO)CN1C=CC(NC(=O)[C@@H](N2CC(OC3C=CC=C(Cl)C=3Cl)=CC2=O)CC(C)C)=N1>ClCCl>[OH:1][C:2]([CH3:33])([CH3:31])[CH2:3][N:4]1[CH:8]=[CH:7][C:6]([NH:9][C:10](=[O:30])[C@@H:11]([N:16]2[CH2:20][C:19]([O:21][C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=3[F:28])=[CH:18][C:17]2=[O:29])[CH2:12][CH:13]([CH3:14])[CH3:15])=[N:5]1

Participants

6

Reactant 4

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 66899094HMS5552 HClHCID 66899105HCID 66899105, compound

Product 1

HCID 57920046(S)-2-[4-(2-fluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-amideYield 74%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
25 °C

Procedure

A solution of (S)-2-[4-(2-fluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid (prepared as in Example 166, 200 mg, 0.65 mmol) in dichloromethane (20 mL) was treated with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (110 mg, 0.72 mmol) and 1-hydroxybenzotriazole (93 mg, 0.68 mmol). The reaction mixture was stirred at 25° C. for 1 h followed by the addition of 1-(3-amino-pyrazol-1-yl)-2-methyl-propan-2-ol (prepared in U.S. Pat. Appl. US2008021032 Example 80, 121 mg, 0.78 mmol). The reaction mixture was stirred for 18 h at 25° C., under nitrogen. The reaction mixture was diluted with dichloromethane, washed with 2N hydrochloric acid, saturated sodium bicarbonate solution, a saturated sodium chloride solution and dried over magnesium sulfate. The crude product obtained after concentration, was purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 40 g; 0% to 10% methanol/dichloromethane) to afford (S)-2-[4-(2-fluoro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-amide (177 mg, 74%) as a light yellow powder: LR-ES-MS m/z calculated for C23H29FN4O4 [M+H]+ 444, observed 445; 1H NMR (300 MHz, DMSO-d6) δ ppm 0.90 (d, J=6.3 Hz, 3H), 0.93 (d, J=6.3 Hz, 3H), 1.05 (br. s., 3H), 1.06 (br. s., 3H), 1.37-1.65 (m, 2H), 1.69-1.84 (m, 1H), 3.89 (s, 2H), 4.22 (d, J=18.4 Hz, 1H), 4.61 (d, J=18.4 Hz, 1H), 4.68 (s, 1H), 4.86 (s, 1H), 4.87-4.93 (m, 1H), 6.44 (d, J=1.8 Hz, 1H), 7.25-7.52 (m, 4H), 7.53 (d, J=1.8 Hz, 1H), 10.80 (s, 1H).

Workup

  1. stirringThe reaction mixture was stirred for 18 h at 25° C., under nitrogen
  2. washwashed with 2N hydrochloric acid, saturated sodium bicarbonate solution
  3. dry with materiala saturated sodium chloride solution and dried over magnesium sulfate
  4. customThe crude product obtained
  5. concentrationafter concentration
  6. customwas purified by ISCO flash chromatography (Teledyne Isco RediSep Flash Column 40 g; 0% to 10% methanol/dichloromethane)

Sources & evidence

ORD record
ord-571fbd09d0274f7e89da6302f61d8725
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

Loading…