Hydrochloric Acid → (S)-4-methyl-2-(1-oxo-4-trifluoromethyl-1,3-dihydro-isoindol-2-yl)-pentanoic acid [5-((S)-1,2-dihydroxy-ethyl)-pyrazin-2-yl]-amide

HRID 1261514Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1261514
CC1(C)[O:6][C@@H:5]([C:7]2[N:8]=[CH:9][C:10]([NH:13][C:14](=[O:34])[C@@H:15]([N:20]3[CH2:28][C:27]4[C:22](=[CH:23][CH:24]=[CH:25][C:26]=4[C:29]([F:32])([F:31])[F:30])[C:21]3=[O:33])[CH2:16][CH:17]([CH3:19])[CH3:18])=[N:11][CH:12]=2)[CH2:4][O:3]1.Cl>O1CCCC1>[OH:6][C@@H:5]([C:7]1[N:8]=[CH:9][C:10]([NH:13][C:14](=[O:34])[C@@H:15]([N:20]2[CH2:28][C:27]3[C:22](=[CH:23][CH:24]=[CH:25][C:26]=3[C:29]([F:32])([F:30])[F:31])[C:21]2=[O:33])[CH2:16][CH:17]([CH3:19])[CH3:18])=[N:11][CH:12]=1)[CH2:4][OH:3]

Komponenten

4

Edukt 2

HCID 313Hydrochloric AcidHCID 86673402(S)-4-methyl-2-(1-oxo-4-trifluoromethyl-1,3-dihydro-isoindol-2-yl)-pentanoic acid [5-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-pyrazin-2-yl]-amide

Produkt 1

HCID 70674680(S)-4-methyl-2-(1-oxo-4-trifluoromethyl-1,3-dihydro-isoindol-2-yl)-pentanoic acid [5-((S)-1,2-dihydroxy-ethyl)-pyrazin-2-yl]-amideAusbeute 88 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A solution of afford (S)-4-methyl-2-(1-oxo-4-trifluoromethyl-1,3-dihydro-isoindol-2-yl)-pentanoic acid [5-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl)-pyrazin-2-yl]-amide (53 mg, 0.11 mmol) in tetrahydrofuran (1 mL) was treated with a 1N aqueous hydrochloric acid solution (1 mL) and stirred at room temperature overnight. The reaction mixture was then concentrated in vacuo to remove the tetrahydrofuran and the remaining material was partitioned between ethyl acetate and a saturated aqueous sodium bicarbonate solution. The organic layer was separated and dried over magnesium sulfate, filtered to remove the drying agent and the filtrate concentrated in vacuo to afford (S)-4-methyl-2-(1-oxo-4-trifluoromethyl-1,3-dihydro-isoindol-2-yl)-pentanoic acid [5-((S)-1,2-dihydroxy-ethyl)-pyrazin-2-yl]-amide (43 mg, 88%) as a cream colored foam: [α]29D=+22.9° (c=0.14, methanol); HR-ES(+) m/e calcd for C21H23N4O4F3 [M+H]+ 453.1744, observed 453.1744; 1H NMR (400 MHz, DMSO-d6) δ 11.26 (s, 1H), 9.16 (s, 1H), 8.45 (d, J=1.07 Hz, 1H), 8.02 (dd, J=7.67, 11.29 Hz, 2H), 7.67-7.85 (m, 1H), 5.55 (d, J=4.90 Hz, 1H), 5.28 (dd, J=5.11, 10.65 Hz, 1H), 5.05 (d, J=18.33 Hz, 1H), 4.66-4.78 (m, 2H), 4.62 (q, J=4.90 Hz, 1H), 3.67 (td, J=5.30, 10.92 Hz, 1H), 3.55 (td, J=5.78, 11.24 Hz, 1H), 1.95-2.09 (m, 1H), 1.71-1.88 (m, 1H), 1.49 (br. s., 1H), 0.90-1.00 (m, 6H).

Aufarbeitung

  1. concentrationThe reaction mixture was then concentrated in vacuo
  2. customto remove the tetrahydrofuran
  3. customthe remaining material was partitioned between ethyl acetate
  4. customThe organic layer was separated
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. customto remove the drying agent
  8. concentrationthe filtrate concentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-f15e9d97453740b6834ac70f276e971f
Quelldatensatz
uspto-grants-2013_06
Patentnummer
US08470866B2

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