2,6-Lutidine → 2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-(1-dimethylcarbamoylmethyl-1H-pyrazol-3-yl)-propionamide

HRID 545993

Reaktionsgleichung

Reaktionsgleichung von HRID 545993
[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:12]([CH2:25][CH:26]2[CH2:30][CH2:29][CH2:28][CH2:27]2)[C:13]([NH:15][C:16]2[CH:20]=[CH:19][N:18]([CH2:21][C:22](O)=[O:23])[N:17]=2)=[O:14])[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:10])=[O:9].C(Cl)(=O)C(Cl)=O.[N:37]1[C:42](C)=CC=C[C:38]=1C.Cl.CNC>C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[C:4]([C@@H:12]([CH2:25][CH:26]2[CH2:27][CH2:28][CH2:29][CH2:30]2)[C:13]([NH:15][C:16]2[CH:20]=[CH:19][N:18]([CH2:21][C:22](=[O:23])[N:37]([CH3:42])[CH3:38])[N:17]=2)=[O:14])[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:9])=[O:10]

Komponenten

6

Edukt 4

HCID 79372,6-LutidineHCID 10473Dimethylamine, hydrochlorideHCID 65578Oxalyl chlorideHCID 67189335{3-[2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-propionylamino]-pyrazol-1-yl}-acetic acid

Produkt 1

HCID 671906552(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-(1-dimethylcarbamoylmethyl-1H-pyrazol-3-yl)-propionamideAusbeute 60,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Reaktionsbedingungen

Temperatur
25 °C

Versuchsvorschrift

To a solution containing {3-[2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-propionylamino]-pyrazol-1-yl}-acetic acid (prepared in example 3, 100 mg, 0.22 mmol) in methylene chloride (2 mL), was then added a 2.0 M solution of oxalylchloride in methylene chloride (121 μL, 0.24 mmol) at 0° C. and allowed to stir at 25° C. for 1 h, after which time 2,6-lutidine (28 μL, 0.24 mmol) was added to the solution. After 1 h, dimethylamine hydrochloride (20 mg, 0.24 mmol) was added and the reaction was allowed to proceed for 16 h. The reaction solution was washed with saturated aqueous ammonium chloride solution, the organic phase was concentrated in vacuo and purified by ISCO flash column chromatography (Teledyne Isco RediSep Flash Column 10 g; 0% methanol/methylene chloride to 10% methanol/methylene chloride) to afford 2(R)-(3-chloro-4-methanesulfonyl-phenyl)-3-cyclopentyl-N-(1-dimethylcarbamoylmethyl-1H-pyrazol-3-yl)-propionamide (64 mg, 60%) as a white solid: ESI-LRMS m/e calcd for C22H29ClN4O4S [M+] 480.2, found 481.3 [M+H+]; 1H NMR (400 MHz, CDCl3) δ ppm 1.02-1.22 (m, 2H, CH2), 1.41-1.93 (m, 8H, 4×CH2), 2.18-2.27 (m, 1H, CH), 2.97 (s, 3H, NCH3), 3.03 (s, 3H, NCH3), 3.26 (s, 3H, SO2CH3), 3.54 (t, J=7.5 Hz, 1H, CH), 4.81 (s, 2H, NCH2), 6.71 (d, J=2.3 Hz, 1H, Ar), 7.34 (d, J=2.3 Hz, 1H, Ar), 7.43 (dd, Jo=8.2, Jm=1.8 Hz, 1H, Ar), 7.57 (d, Jm=1.8 Hz, 1H, Ar), 7.96 (s, 1H, NH), 8.06 (d, Jo=8.2 Hz, 1H, Ar).

Aufarbeitung

  1. waitAfter 1 h
  2. waitto proceed for 16 h
  3. washThe reaction solution was washed with saturated aqueous ammonium chloride solution
  4. concentrationthe organic phase was concentrated in vacuo
  5. custompurified by ISCO flash column chromatography (Teledyne Isco RediSep Flash Column 10 g; 0% methanol/methylene chloride to 10% methanol/methylene chloride)

Quellen und Nachweise

ORD-Eintrag
ord-c6c1c3c55bcf495aaf8cee10112937b7
Quelldatensatz
uspto-grants-2011_05
Patentnummer
US07935699B2

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