Water → N-((5-Methyl-1,8-naphthyridin-2(1H)-on-3-yl)acetyl)-N-(2-(tert-butyloxycarbonyl)aminoethyl)glycine

HRID 987904Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 987904
[CH3:1][C:2]1[CH:11]=[CH:10][N:9]=[C:8]2[C:3]=1[CH:4]=[C:5]([CH2:13][C:14]([N:16]([CH2:22][CH2:23][NH:24][C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:17][C:18]([O:20]C)=[O:19])=[O:15])[C:6](=[O:12])[NH:7]2.[Li+].[OH-].O>C1COCC1>[CH3:1][C:2]1[CH:11]=[CH:10][N:9]=[C:8]2[C:3]=1[CH:4]=[C:5]([CH2:13][C:14]([N:16]([CH2:22][CH2:23][NH:24][C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:17][C:18]([OH:20])=[O:19])=[O:15])[C:6](=[O:12])[NH:7]2

Komponenten

5

Edukt 3

HCID 962WaterHCID 3939Lithium HydroxideHCID 22987119Methyl N-((5-Methyl-1,8-naphthyridin-2(1H)-on-3-yl)acetyl)-N-(2-(tert-butyloxycarbonyl)aminoethyl)glycinate

Produkt 1

HCID 22987121N-((5-Methyl-1,8-naphthyridin-2(1H)-on-3-yl)acetyl)-N-(2-(tert-butyloxycarbonyl)aminoethyl)glycineAusbeute 53 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of methyl N-((5-methyl-1,8-naphthyridin-2(1H)-on-3-yl)acetyl)-N-(2-(tert-butyloxycarbonyl)aminoethyl)glycinate (0.72 g, 1.70 mmol) in THF (10 mL) was added LiOH (aqueous, 2M) (2.0 mL). The resulting solution was stirred at rt. for 45 min. then additional water was added, the THF was evaporated in vacuo and the pH of the aqueous solution was adjusted to 3.0. The resulting precipitate was washed with water (2×10 mL), collected by centrifugation and dried in vacuo to yield the desired product (366 mg, 53%) as a white powder (mp 133-36° C.). 1H NMR (DMSO-d6; this compound exist as two rotamers; chemical shifts for the minor rotamer is given in brackets): δ 12.12 (s br, 1H), 8.33 (d, J=4.9 Hz, 1H), 8.00 (s, 1H), 7.09 (d, J=4.9 Hz, 1H), 6.92 (6.70) (m, 1H), 3.99 (4.26) (s, 2H), 3.62 (s, 2H), 3.45 (m, 2H+H2O), 3.17 (m, 2H), 2.53 (2.52) (s, 3H), 1.36 (1.34) (s, 9H) 13C NMR (DMSO-d6): δ 171.07 (171.31), 170.23 (170.54), 162.36, 155.80, 149.53, 149.27, 145.30, 132.67 (133.55), 129.35 (129.20), 119.92, 113.44, 78.01, 48.13, 47.33, 38.60 (38.36), 34.07, 28.27, 17.76. FAB− HRMS (m/z): 417.1798, calc. C20H26N4O6−H 417.1774.

Aufarbeitung

  1. customthe THF was evaporated in vacuo
  2. washThe resulting precipitate was washed with water (2×10 mL)
  3. customcollected by centrifugation
  4. customdried in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-52650747ef7e4267ab3e1b2ea97c1c85
Quelldatensatz
uspto-grants-2003_10
Patentnummer
US06632919B1

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