Acetic Acid → 6-[({1-[3-(7-methoxy-quinoxalin-2-yloxy)-propyl]-piperidin-4-ylmethyl}-amino)-methyl]-4H-pyrido[3,2-b][1,4]oxazin-3-one

HRID 1019871Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1019871
[O:1]=[C:2]1[CH2:7][O:6][C:5]2[CH:8]=[CH:9][C:10]([CH:12]=O)=[N:11][C:4]=2[NH:3]1.[CH3:14][O:15][C:16]1[CH:25]=[C:24]2[C:19]([N:20]=[CH:21][C:22]([O:26][CH2:27][CH2:28][CH2:29][N:30]3[CH2:35][CH2:34][CH:33]([CH2:36][NH2:37])[CH2:32][CH2:31]3)=[N:23]2)=[CH:18][CH:17]=1.C(O)(=O)C.C([BH3-])#N.[Na+]>ClCCCl.CO>[CH3:14][O:15][C:16]1[CH:25]=[C:24]2[C:19]([N:20]=[CH:21][C:22]([O:26][CH2:27][CH2:28][CH2:29][N:30]3[CH2:31][CH2:32][CH:33]([CH2:36][NH:37][CH2:12][C:10]4[CH:9]=[CH:8][C:5]5[O:6][CH2:7][C:2](=[O:1])[NH:3][C:4]=5[N:11]=4)[CH2:34][CH2:35]3)=[N:23]2)=[CH:18][CH:17]=1

Komponenten

7

Edukt 4

HCID 176Acetic AcidHCID 5003444Sodium cyanoborohydrideHCID 218737373-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carbaldehydeHCID 66746562C-{1-[3-(7-methoxy-quinoxalin-2-yloxy)-propyl]-piperidin-4-yl}-methylamine

Produkt 1

HCID 468520736-[({1-[3-(7-methoxy-quinoxalin-2-yloxy)-propyl]-piperidin-4-ylmethyl}-amino)-methyl]-4H-pyrido[3,2-b][1,4]oxazin-3-oneAusbeute 30,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 111,2-DichloroethaneLösungsmittelHCID 887MethanolLösungsmittel

Versuchsvorschrift

3-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carbaldehyde (22 mg, 0.12 mmol 1.0 eq) is added at room temperature to a stirred solution of C-{1-[3-(7-methoxy-quinoxalin-2-yloxy)-propyl]-piperidin-4-yl}-methylamine (40 mg, 0.12 mmol, 1.0 eq) in 1,2-dichloroethane (2 mL) and methanol (0.5 mL), followed by acetic acid (9 μL, 0.15 mmol, 1.3 eq) and sodium cyanoborohydride (11 mg, 0.15 mmol, 1.3 eq). After 15 hours stirring at room temperature, the reaction mixture is extracted with dichloromethane (3×5 mL) and a saturated sodium hydrogen carbonate aqueous solution (5 mL). The combined organic layers are dried over sodium sulfate, filtered and concentrated to give a residue that is purified by preparative HPLC to afford 6-[({1-[3-(7-methoxy-quinoxalin-2-yloxy)-propyl]-piperidin-4-ylmethyl}-amino)-methyl]-4H-pyrido[3,2-b][1,4]oxazin-3-one as a white viscous oil (18 mg, 29% yield).

Aufarbeitung

  1. extractionthe reaction mixture is extracted with dichloromethane (3×5 mL)
  2. dry with materialThe combined organic layers are dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customto give a residue that
  6. customis purified by preparative HPLC

Quellen und Nachweise

ORD-Eintrag
ord-8e0f1e7c4d3e4b329d349ad46218e071
Quelldatensatz
uspto-grants-2014_05
Patentnummer
US08716280B2

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