Pyridine → N-[3-[(4aR,7aS)-2-amino-6-(5-fluoropyrimidin-2-yl)-4,4a,5,7-tetrahydropyrrolo[3,4-d][1,3]thiazin-7a-yl]-4-fluorophenyl]-5-cyanopyridine-2-carboxamide;hydrochloride

HRID 876749Notes

Reaction equation

HRID 876749 reaction equation
C([NH:9][C:10]1[S:11][CH2:12][C@@H:13]2[CH2:18][N:17]([C:19]3[N:24]=[CH:23][C:22]([F:25])=[CH:21][N:20]=3)[CH2:16][C@:14]2([C:26]2[CH:27]=[C:28]([NH:33][C:34]([C:36]3[CH:41]=[CH:40][C:39]([C:42]#[N:43])=[CH:38][N:37]=3)=[O:35])[CH:29]=[CH:30][C:31]=2[F:32])[N:15]=1)(=O)C1C=CC=CC=1.[ClH:44].CON.N1C=CC=CC=1>C1COCC1.CO.C(O)C>[ClH:44].[NH2:9][C:10]1[S:11][CH2:12][C@@H:13]2[CH2:18][N:17]([C:19]3[N:24]=[CH:23][C:22]([F:25])=[CH:21][N:20]=3)[CH2:16][C@:14]2([C:26]2[CH:27]=[C:28]([NH:33][C:34]([C:36]3[CH:41]=[CH:40][C:39]([C:42]#[N:43])=[CH:38][N:37]=3)=[O:35])[CH:29]=[CH:30][C:31]=2[F:32])[N:15]=1

Participants

7

Reactant 3

HCID 1049PyridineHCID 521874O-Methylhydroxylamine hydrochlorideHCID 86762778N-[3-[(4aR,7aS)-2-Benzamido-6-(5-fluoropyrimidin-2-yl)-4,4a,5,7-tetrahydropyrrolo[3,4-d][1,3]thiazin-7a-yl]-4-fluoro-phenyl]-5-cyano-pyridine-2-carboxamide

Product 1

HCID 86762786N-[3-[(4aR,7aS)-2-amino-6-(5-fluoropyrimidin-2-yl)-4,4a,5,7-tetrahydropyrrolo[3,4-d][1,3]thiazin-7a-yl]-4-fluorophenyl]-5-cyanopyridine-2-carboxamide;hydrochloride

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
50 °C

Procedure

N-[3-[(4aR,7aS)-2-Benzamido-6-(5-fluoropyrimidin-2-yl)-4,4a,5,7-tetrahydropyrrolo[3,4-d][1,3]thiazin-7a-yl]-4-fluoro-phenyl]-5-cyano-pyridine-2-carboxamide (133 mg, 0.22 mmol, isomer 1) is dissolved in THF (1 mL) and diluted with methanol (3 mL) and ethanol (3 mL). O-Methylhydroxylamine hydrochloride (190 mg, 2.2 mmol) and pyridine (180 μL, 2.2 mmol) are added. The reaction is warmed to 50° C. and stirred overnight. The mixture is concentrated onto silica gel (˜10 g) and purified via silica gel chromatography eluting with a 0-10% gradient of 7 N ammonia methanol in dichloromethane. The material is purified a second time on a SCX column using 3:1 dichloromethane:methanol and then 2:1 dichloromethane:7 N ammonia in methanol. The mixture is purified a final time over silica gel with a 0% to 10% gradient of 7 N ammonia methanol in dichloromethane to give the free base of the title compound. This material is dissolved in dichloromethane (5 mL) and 1 M hydrogen chloride in diethyl ether (0.27 mL, 270 μmol) is added. The solvent is removed in vacuo to give the title compound (114 mg, 97%). ES/MS (m/e): 493 (M+H).

Workup

  1. concentrationThe mixture is concentrated onto silica gel (˜10 g)
  2. custompurified via silica gel chromatography
  3. washeluting with a 0-10% gradient of 7 N ammonia methanol in dichloromethane
  4. customThe material is purified a second time on a SCX column
  5. customThe mixture is purified a final time over silica gel with a 0% to 10% gradient of 7 N ammonia methanol in dichloromethane

Sources & evidence

ORD record
ord-2b63ccefa70d4a7bae2d09973c1decd8
Source dataset
uspto-grants-2015_03
Patent number
US08987254B2

Reaction notes

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