Maleic Acid → HCID 86586271, compound

HRID 897735Notes

Reaction equation

HRID 897735 reaction equation
[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH:31]3[CH2:36][CH2:35][N:34]([CH:37]4[CH2:42][CH2:41][N:40]([CH3:43])[CH2:39][CH2:38]4)[CH2:33][CH2:32]3)[N:9]=[C:10]([C:11]3[CH:16]=[CH:15][C:14]([NH:17][C:18](=[O:28])[CH2:19][C@@H:20]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=4)[CH3:21])=[C:13]([O:29][CH3:30])[CH:12]=3)[C:3]=12.[C:44]([OH:51])(=[O:50])/[CH:45]=[CH:46]\[C:47]([OH:49])=[O:48]>C(OCC)(=O)C>[C:44]([OH:51])(=[O:50])/[CH:45]=[CH:46]\[C:47]([OH:49])=[O:48].[C:44]([OH:51])(=[O:50])/[CH:45]=[CH:46]\[C:47]([OH:49])=[O:48].[C:44]([OH:51])(=[O:50])/[CH:45]=[CH:46]\[C:47]([OH:49])=[O:48].[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH:31]3[CH2:32][CH2:33][N:34]([CH:37]4[CH2:42][CH2:41][N:40]([CH3:43])[CH2:39][CH2:38]4)[CH2:35][CH2:36]3)[N:9]=[C:10]([C:11]3[CH:16]=[CH:15][C:14]([NH:17][C:18](=[O:28])[CH2:19][C@@H:20]([C:22]4[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=4)[CH3:21])=[C:13]([O:29][CH3:30])[CH:12]=3)[C:3]=12

Participants

4

Reactant 2

HCID 444266Maleic AcidHCID 20817141HCID 20817141, compound

Product 1

HCID 86586271HCID 86586271, compound

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Procedure

A solution of 3-(4-amino-3-methoxyphenyl)-1-[1-(1-methylpiperidin-4-yl)piperidin-4-yl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (0.500 g, 1.15 mmol) in pyridine (8 mL) at −5° C. was treated with a solution of (3S)-3-phenylbutanoyl chloride (0.420 g, 2.3 mmol) in dichloromethane (3 μL). The reaction mixture stirred for 20 min at −5° C., then the dry ice/acetone bath was removed and was stirred at room temperature under a nitrogen atmosphere. (3S)-3-phenylbutanoyl chloride (0.210 g, 1.15 mmol) was added to the reaction mixture and was stirred for 2 h. Sodium hydroxide (1 N) solution (10 mL) was added and was stirred over night. The organic solvent was removed under reduced pressure, and dichloromethane (20 mL) was added. The layers were partitioned, and the aqueous layer was extracted with dichloromethane (125 mL). The combined organic layers were washed with water, dried over magnesium sulfate, filtered and the solvent removed under reduced pressure. N1-(4-{4-amino-1-[1-(1-methylpiperidin-4-yl)piperidin-4-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-2-methoxyphenyl)-(3S)-3-phenylbutanamide was purified by flash chromatography on silica gel using 15% (methanol with 2% ammonium hydroxide) in dichloromethane (10 min), 20% (methanol with 2% ammonium hydroxide) in dichloromethane (15 min), 50% (methanol with 2% ammonium hydroxide) in dichloromethane (7 min) to give 0.455 g (68%) pure N1-(4-{4-amino-1-[1-(1-methylpiperidin-4-yl)piperidin-4-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-2-methoxyphenyl)-(3S)-3-phenylbutanamide. A warmed solution of N1-(4-{4-amino-1-[1-(1-methylpiperidin-4-yl)piperidin-4-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-2-methoxyphenyl)-(3S)-3-phenylbutanamide (0.455 g, 0.782 mmol) in ethyl acetate was treated with a warmed solution of maleic acid (0.272 g, 2.35) in ethyl acetate. The precipitate was filtered under nitrogen and dried on lyophilizer to give N1-(4-{4-amino-1-[1-(1-methylpiperidin-4-yl)piperidin-4-yl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-2-methoxyphenyl)-(3S)-3-phenylbutanamide trimaleate.

Workup

  1. filtrationThe precipitate was filtered under nitrogen
  2. customdried on lyophilizer

Sources & evidence

ORD record
ord-b5c0ac4154a3429796e5d6f35b78571b
Source dataset
uspto-grants-2005_07
Patent number
US06921763B2

Reaction notes

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