Dichloromethane → 6-{[({(3S,4S)-1-[2-(7-fluoro-2-oxo-1,5-naphthyridin-1(2H)-yl)ethyl]-4-hydroxy-3-pyrrolidinyl}methyl)amino]methyl}-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one Hydrochloride

HRID 657047Notes

Reaction equation

HRID 657047 reaction equation
[NH2:1][CH2:2][C@@H:3]1[C@H:7]([OH:8])[CH2:6][N:5]([CH2:9][CH2:10][N:11]2[C:20]3[C:15](=[N:16][CH:17]=[C:18]([F:21])[CH:19]=3)[CH:14]=[CH:13][C:12]2=[O:22])[CH2:4]1.[O:23]=[C:24]1[CH2:29][O:28][C:27]2[CH:30]=[CH:31][C:32]([CH:34]=O)=[N:33][C:26]=2[NH:25]1.C(=O)([O-])[O-].[Na+].[Na+].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(Cl)[Cl:57]>CO>[ClH:57].[F:21][C:18]1[CH:19]=[C:20]2[C:15]([CH:14]=[CH:13][C:12](=[O:22])[N:11]2[CH2:10][CH2:9][N:5]2[CH2:6][C@@H:7]([OH:8])[C@@H:3]([CH2:2][NH:1][CH2:34][C:32]3[CH:31]=[CH:30][C:27]4[O:28][CH2:29][C:24](=[O:23])[NH:25][C:26]=4[N:33]=3)[CH2:4]2)=[N:16][CH:17]=1

Participants

7

Reactant 5

HCID 6344DichloromethaneHCID 10340Sodium CarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 218737373-Oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carbaldehydeHCID 688098161-{2-[(3S,4S)-3-(aminomethyl)-4-hydroxy-1-pyrrolidinyl]ethyl}-7-fluoro-1,5-naphthyridin-2(1H)-one

Product 1

HCID 689938436-{[({(3S,4S)-1-[2-(7-fluoro-2-oxo-1,5-naphthyridin-1(2H)-yl)ethyl]-4-hydroxy-3-pyrrolidinyl}methyl)amino]methyl}-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one HydrochlorideYield 48%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

1-{2-[(3S,4S)-3-(Aminomethyl)-4-hydroxy-1-pyrrolidinyl]ethyl}-7-fluoro-1,5-naphthyridin-2(1H)-one (108 mg; 0.353 mmol) and 3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine-6-carboxaldehyde (for a synthesis see WO2003087098, Example 31(e)) (69 mg; 0.388 mmol) were combined in anhydrous DCM (5 ml) and anhydrous MeOH (1 ml) with a spatula of solid sodium carbonate. The reaction mixture was stirred under nitrogen for 18 h then sodium triacetoxyborohydride (235 mg; 1.06 mmol) was added and stirred for 1 h. The reaction mixture was concentraed and purified to obtain the free base of the title compound as a pale yellow oil (80 mg; 48%) after column chromatography (90:10:1: DCM:MeOH:NH4OH).

Workup

  1. stirringstirred for 1 h
  2. custompurified

Sources & evidence

ORD record
ord-af16ca11ec6c4b4a9f06b483d21dc559
Source dataset
uspto-grants-2011_12
Patent number
US08071592B2

Reaction notes

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