5-Chloro-6-(hydroxymethyl)-3-pyridinecarbaldehyde → 1-{2-[(3R,4S)-4-({[5-chloro-6-(hydroxymethyl)-3-pyridinyl]methyl}amino)-3-hydroxy-1-piperidinyl]ethyl}-7-fluoro-1,5-naphthyridin-2(1H)-one

HRID 1881734Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1881734
[NH2:1][C@H:2]1[CH2:7][CH2:6][N:5]([CH2:8][CH2:9][N:10]2[C:19]3[C:14](=[N:15][CH:16]=[C:17]([F:20])[CH:18]=3)[CH:13]=[CH:12][C:11]2=[O:21])[CH2:4][C@H:3]1[OH:22].[Cl:23][C:24]1[CH:25]=[C:26]([CH:32]=O)[CH:27]=[N:28][C:29]=1[CH2:30][OH:31]>ClCCCl.CO>[Cl:23][C:24]1[CH:25]=[C:26]([CH2:32][NH:1][C@H:2]2[CH2:7][CH2:6][N:5]([CH2:8][CH2:9][N:10]3[C:19]4[C:14](=[N:15][CH:16]=[C:17]([F:20])[CH:18]=4)[CH:13]=[CH:12][C:11]3=[O:21])[CH2:4][C@H:3]2[OH:22])[CH:27]=[N:28][C:29]=1[CH2:30][OH:31]

Komponenten

5

Edukt 2

HCID 580017855-Chloro-6-(hydroxymethyl)-3-pyridinecarbaldehyde2×HCID 585793871-{2-[(3R,4S)-4-amino-3-hydroxy-1-piperidinyl]ethyl}-7-fluoro-1,5-naphthyridin-2(1H)-one

Produkt 1

HCID 468463881-{2-[(3R,4S)-4-({[5-chloro-6-(hydroxymethyl)-3-pyridinyl]methyl}amino)-3-hydroxy-1-piperidinyl]ethyl}-7-fluoro-1,5-naphthyridin-2(1H)-one

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 111,2-DichloroethaneLösungsmittelHCID 887MethanolLösungsmittel

Versuchsvorschrift

A mixture of 1-{2-[(3R,4S)-4-amino-3-hydroxy-1-piperidinyl]ethyl}-7-fluoro-1,5-naphthyridin-2(1H)-one (Intermediate 31 as a free base: 60 mg, 0.196 mmol) and 5-chloro-6-(hydroxymethyl)-3-pyridinecarbaldehyde (Intermediate 39: 33.6 mg, 0.196 mmol) in DCE (5 ml) and Methanol (0.5 ml) was stirred at rt for 5 h. LCMS showed desired compound Rt 2.16 [M+H]+ 460 and not starting material, sodium triacetoxy borohydride (125 mg, 0.588 mmol) was added. The mixture was stirred under nitrogen at room temperature overnight. LCMS showed desired compound and imine. An excess of sodium triacetoxy borohydride (62.3 mg, 0.294 mmol) was added. The mixture was stirred at room temperature for 3 h. Full conversion to the amine was observed by LCMS desired compound Rt 2.02 [M+H]+ 462. It was quenched with saturated NaHCO3, extracted with dichloromethane, dried (MgSO4), filtered, and concentrated affording 78.5 mg of crude material. Purification by manual flash chromatography using a 5 g Merck silica gel cartridge, and DCM/MeOH 9/1 as eluent afforded 1-{2-[(3R,4S)-4-({[5-chloro-6-(hydroxymethyl)-3-pyridinyl]methyl}amino)-3-hydroxy-1-piperidinyl]ethyl}-7-fluoro-1,5-naphthyridin-2(1H)-one (35 mg, 0.072 mmol, 36.8% yield) as a white solid.

Quellen und Nachweise

ORD-Eintrag
ord-2595a53fabcb443194d59309489812bf
Quelldatensatz
uspto-grants-2012_11
Patentnummer
US08318940B2

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