p-Toluenesulfonic acid monohydrate → HCID 44252318, compound

HRID 19064Notes

Reaction equation

HRID 19064 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:35]5[CH2:34][CH2:33][CH2:32][CH2:31][C:30]=5[CH:29]=[CH:28][CH:27]=4)=[CH:22][C:21]3=[O:36])[CH2:16][CH:17]([CH3:19])[CH3:18])=[N:9]2)[CH2:4][O:3]1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>CO>[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:35]4[CH2:34][CH2:33][CH2:32][CH2:31][C:30]=4[CH:29]=[CH:28][CH:27]=3)=[CH:22][C:21]2=[O:36])[CH2:16][CH:17]([CH3:19])[CH3:18])=[N:9]1

Participants

4

Reactant 2

HCID 521998p-Toluenesulfonic acid monohydrateHCID 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]-amide

Product 1

HCID 44252318HCID 44252318, compoundYield 72.5%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

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 [1-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl-methyl)-1H-pyrazol-3-yl]-amide (43 mg, 0.08 mmol) in methanol (1 mL) at 25° C. was treated with p-toluenesulfonic acid monohydrate (4 mg, 0.02 mmol). The reaction was stirred at 25° C. overnight. At this time, the reaction was concentrated in vacuo. The residue was diluted with dichloromethane (25 mL) and was washed with a saturated aqueous sodium bicarbonate solution (1×25 mL), water (1×25 mL) and a saturated aqueous sodium chloride solution (1×25 mL), dried over magnesium sulfate, filtered, rinsed with dichloromethane and concentrated in vacuo. Purification by Analogix flash chromatography (8 g, 1-10% methanol/dichloromethane) 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)-2,3-dihydroxy-propyl)-1H-pyrazol-3-yl]-amide (28 mg, 71%) as a white solid: HR-ES-MS m/z calculated for C26H34N4O5 [M+H]+ 483.2602, observed 483.2603; 1H NMR (400 MHz, DMSO-d6) δ ppm 0.90 (d, J=6.5 Hz, 3H), 0.94 (d, J=6.5 Hz, 3H), 1.46 (br. s., 1H), 1.53-1.65 (m, 1H), 1.65-1.85 (m, 5H), 2.57 (br. s., 2H), 2.76 (br. s., 2H), 3.21-3.31 (m, 2H), 3.72-3.82 (m, 1H), 3.87 (dd, J=13.4, 7.5 Hz, 1H), 4.09 (dd, J=13.6, 4.0 Hz, 1H), 4.18 (d, J=18.3 Hz, 1H), 4.56 (d, J=18.3 Hz, 1H), 4.65 (s, 1H), 4.71 (t, J=5.4 Hz, 1H), 4.87 (dd, J=10.7, 4.9 Hz, 1H), 4.93 (d, J=5.1 Hz, 1H), 6.41 (d, J=2.1 Hz, 1H), 7.04 (d, J=7.7 Hz, 2H), 7.18 (t, J=7.7 Hz, 1H), 7.53 (d, J=2.1 Hz, 1H), 10.75 (s, 1H).

Workup

  1. concentrationAt this time, the reaction was concentrated in vacuo
  2. additionThe residue was diluted with dichloromethane (25 mL)
  3. washwas washed with a saturated aqueous sodium bicarbonate solution (1×25 mL), water (1×25 mL)
  4. dry with materiala saturated aqueous sodium chloride solution (1×25 mL), dried over magnesium sulfate
  5. filtrationfiltered
  6. washrinsed with dichloromethane
  7. concentrationconcentrated in vacuo
  8. customPurification by Analogix flash chromatography (8 g, 1-10% methanol/dichloromethane)

Sources & evidence

ORD record
ord-ddcf0b2d9fe74728b2469cfe369366aa
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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