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Sodium Sulfate → HCID 178487982, Verbindung

HRID 657129
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 657129
[NH2:1][CH2:2][C@@H:3]1[CH2:8][CH2:7][CH2:6][N:5]([CH2:9][CH2:10][N:11]2[C:16](=[O:17])[CH:15]=[N:14][C:13]3[CH:18]=[CH:19][C:20]([O:22][CH3:23])=[N:21][C:12]2=3)[CH2:4]1.[O:24]=[C:25]1[NH:36][C:29]2[N:30]=[C:31]([CH:34]=O)[N:32]=[CH:33][C:28]=2[CH2:27][CH2:26]1.[O-]S([O-])(=O)=O.[Na+].[Na+].[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+].CO.C(Cl)[Cl:61]>>[ClH:61].[ClH:61].[CH3:23][O:22][C:20]1[CH:19]=[CH:18][C:13]2[N:14]=[CH:15][C:16](=[O:17])[N:11]([CH2:10][CH2:9][N:5]3[CH2:6][CH2:7][CH2:8][C@@H:3]([CH2:2][NH:1][CH2:34][C:31]4[NH:30][C:29]5=[N:36][C:25](=[O:24])[CH2:26][CH2:27][C:28]5=[CH:33][N:32]=4)[CH2:4]3)[C:12]=2[N:21]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 5

HCID 24436Sodium SulfateHCID 5049666Sodium triacetoxyborohydrideHCID 21226129Dichloromethane methanolHCID 594374057-Oxo-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidine-2-carbaldehyde2×HCID 689911274-{2-[(3S)-3-(Aminomethyl)-1-piperidinyl]ethyl}-6-(methyloxy)pyrido[2,3-b]pyrazin-3(4H)-one

Produkt 1

HCID 178487982
HCID 178487982, Verbindung

Versuchsvorschrift

To a solution of 4-{2-[(3S)-3-(aminomethyl)-1-piperidinyl]ethyl}-6-(methyloxy)pyrido[2,3-b]pyrazin-3(4H)-one (0.072 g, 0.23 mmol) in 1:1 MeOH/DCM (20 mL), was added 7-oxo-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidine-2-carbaldehyde (for a preparation see Example 125(c)) (0.04 g, 0.23 mmol), and excess Na2SO4. The solution was stirred at ambient temperature for 16 h followed by the addition of NaBH(OAc)3 (1.68 g, 7.92 mmol). The resulting solution was stirred for an additional 2 hours. Analysis by LCMS showed only 50% product, therefore an additional portion of 7-oxo-5,6,7,8-tetrahydropyrido[2,3-d]pyrimidine-2-carbaldehyde (0.04 g, 0.23 mmol) was added and the reaction was stirred for an additional 16 h. The solution was then concentrated onto silica gel under vacuum and the crude residue purified by column chromatography (silica gel) using a DCM/DCM-MeOH—NH4OH (90:10:1) gradient to yield the free base of the desired product as a yellow oily film (0.034 g, 32%). LCMS: m/z 479.2 (MH+). 1H NMR (400 MHz, CDCl3) δ 1.57-1.69 (m, 2H) 1.73-1.82 (m, 1H) 1.95 (d, J=8.59 Hz, 21H) 2.18 (td, J=10.99, 3.03 Hz, 1H) 2.51-2.63 (m, 21H) 2.67-2.75 (m, 4H) 2.81-2.92 (m, 1H) 2.92-3.01 (m, 2H) 3.21-3.32 (m, 1H) 3.88-4.00 (m, 2H) 4.00-4.05 (m, 3H) 4.57-4.68 (m, 2H) 6.73 (d, J=8.59 Hz, 1H) 8.00-8.04 (m, 1H) 8.23 (s, 1H) 8.36 (s, 1H).

Aufarbeitung

  1. stirringThe resulting solution was stirred for an additional 2 hours
  2. stirringthe reaction was stirred for an additional 16 h
  3. concentrationThe solution was then concentrated onto silica gel under vacuum
  4. customthe crude residue purified by column chromatography (silica gel)

Quellen und Nachweise

ORD-Eintrag
ord-9352693a628e4a71b8bee9912095b3a8
Quelldatensatz
uspto-grants-2011_12
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08071592B2

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