Diisopropylethylamine → (s)-4-Methyl-2-[2-oxo-4-(5,6,7,8-tetrahydro-naphthalen-1-yloxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid [1-((r)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1h-pyrazol-3-yl]-amide

HRID 19063Notes

Reaction equation

HRID 19063 reaction equation
[CH3:1][CH:2]([CH3:25])[CH2:3][C@H:4]([N:8]1[CH2:12][C:11]([O:13][C:14]2[C:23]3[CH2:22][CH2:21][CH2:20][CH2:19][C:18]=3[CH:17]=[CH:16][CH:15]=2)=[CH:10][C:9]1=[O:24])[C:5]([OH:7])=O.C(N(CC)C(C)C)(C)C.[CH3:35][C:36]1([CH3:48])[O:40][C@H:39]([CH2:41][N:42]2[CH:46]=[CH:45][C:44]([NH2:47])=[N:43]2)[CH2:38][O:37]1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1>CN(C)C=O.C(OCC)(=O)C>[CH3:35][C:36]1([CH3:48])[O:40][C@H:39]([CH2:41][N:42]2[CH:46]=[CH:45][C:44]([NH:47][C:5](=[O:7])[C@@H:4]([N:8]3[CH2:12][C:11]([O:13][C:14]4[C:23]5[CH2:22][CH2:21][CH2:20][CH2:19][C:18]=5[CH:17]=[CH:16][CH:15]=4)=[CH:10][C:9]3=[O:24])[CH2:3][CH:2]([CH3:25])[CH3:1])=[N:43]2)[CH2:38][O:37]1

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 59344941(R)-1-((2,2-Dimethyl-1,3-dioxolan-4-yl)methyl)-1H-pyrazol-3-amineHCID 66894447(S)-4-methyl-2-[2-oxo-4-(5,6,7,8-tetrahydro-naphthalen-1-yloxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid

Product 1

HCID 91079948(s)-4-Methyl-2-[2-oxo-4-(5,6,7,8-tetrahydro-naphthalen-1-yloxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid [1-((r)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1h-pyrazol-3-yl]-amideYield 48.4%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolvent2×HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
25 °C

Procedure

A solution of (S)-4-methyl-2-[2-oxo-4-(5,6,7,8-tetrahydro-naphthalen-1-yloxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid (59 mg, 0.17 mmol) in N,N-dimethylformamide (1 mL) at 25° C. was treated with N,N-diisopropylethylamine (0.08 mL, 0.51 mmol), a solution of 1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-ylamine (prepared as in Example 49, 41 mg, 0.20 mmol) in N,N-dimethylformamide (0.9 mL) and (benzotriazol-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate (115 mg, 0.26 mmol). The reaction was stirred at 25° C. overnight. At this time, the reaction was diluted with ethyl acetate (25 mL) and was washed with a saturated aqueous ammonium chloride solution (1×25 mL), a saturated aqueous sodium bicarbonate solution (1×25 mL) and a saturated aqueous sodium chloride solution (1×25 mL), dried over magnesium sulfate, filtered, rinsed with ethyl acetate and concentrated in vacuo. Purification by Analogix flash chromatography (24 g, 50-100% ethyl acetate/hexanes) afforded (S)-4-methyl-2-[2-oxo-4-(5,6,7,8-tetrahydro-naphthalen-1-yloxy)-2,5-dihydro-pyrrol-1-yl]-pentanoic acid [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide (43 mg, 47%) as a light yellow solid: 1H NMR (300 MHz, DMSO-d6) δ ppm 0.90 (d, J=6.3 Hz, 3H), 0.94 (d, J=6.3 Hz, 3H), 1.25 (s, 3H), 1.30 (s, 3H), 1.33-1.66 (m, 2H), 1.64-1.83 (m, 5H), 2.57 (br. s., 2H), 2.67-2.80 (m, 2H), 3.73 (dd, J=8.5, 5.7 Hz, 1H), 4.00 (dd, J=8.5, 6.5 Hz, 1H), 4.07-4.14 (m, 1H), 4.18 (d, J=18.4 Hz, 1H), 4.26-4.41 (m, 1H), 4.56 (d, J=18.4 Hz, 1H), 4.65 (s, 1H), 4.88 (dd, J=10.3, 4.8 Hz, 1H), 6.43 (d, J=2.1 Hz, 1H), 6.97-7.07 (m, 2H), 7.18 (t, J=8.2 Hz, 1H), 7.59 (d, J=2.1 Hz, 1H), 10.76 (s, 1H).

Workup

  1. washwas washed with a saturated aqueous ammonium chloride solution (1×25 mL)
  2. dry with materiala saturated aqueous sodium bicarbonate solution (1×25 mL) and a saturated aqueous sodium chloride solution (1×25 mL), dried over magnesium sulfate
  3. filtrationfiltered
  4. washrinsed with ethyl acetate
  5. concentrationconcentrated in vacuo
  6. customPurification by Analogix flash chromatography (24 g, 50-100% ethyl acetate/hexanes)

Sources & evidence

ORD record
ord-6da56332022442a3b025733f6c20740b
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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