Diisopropylethylamine → 7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-N-[(2S)-3-(4-methylpiperazin-1-yl)-2-hydroxy-propyl]-2,2-dimethyl-3H-benzofuran-4-carboxamide

HRID 2364714Notes

Reaction equation

HRID 2364714 reaction equation
[CH:1]1([N:6]2[C:15]3[N:14]=[C:13]([NH:16][C:17]4[CH:18]=[CH:19][C:20]([C:28]([OH:30])=O)=[C:21]5[C:25]=4[O:24][C:23]([CH3:27])([CH3:26])[CH2:22]5)[N:12]=[CH:11][C:10]=3[N:9]([CH3:31])[C:8](=[O:32])[C@H:7]2[CH2:33][CH3:34])[CH2:5][CH2:4][CH2:3][CH2:2]1.[NH2:35][CH2:36][C@H:37]([OH:46])[CH2:38][N:39]1[CH2:44][CH2:43][N:42]([CH3:45])[CH2:41][CH2:40]1.F[B-](F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2C=CC=CC=2N=N1.C(N(C(C)C)CC)(C)C.C(=O)(O)[O-].[Na+]>ClCCl>[CH:1]1([N:6]2[C:15]3[N:14]=[C:13]([NH:16][C:17]4[CH:18]=[CH:19][C:20]([C:28]([NH:35][CH2:36][C@H:37]([OH:46])[CH2:38][N:39]5[CH2:40][CH2:41][N:42]([CH3:45])[CH2:43][CH2:44]5)=[O:30])=[C:21]5[C:25]=4[O:24][C:23]([CH3:26])([CH3:27])[CH2:22]5)[N:12]=[CH:11][C:10]=3[N:9]([CH3:31])[C:8](=[O:32])[C@H:7]2[CH2:33][CH3:34])[CH2:2][CH2:3][CH2:4][CH2:5]1

Participants

7

Reactant 5

HCID 81531DiisopropylethylamineHCID 516892Sodium BicarbonateHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 28279112(2S)-1-amino-3-(4-methylpiperazin-1-yl)propan-2-olHCID 681074737-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-2,2-dimethyl-3H-benzofuran-4-carboxylic acid

Product 1

HCID 510385027-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-N-[(2S)-3-(4-methylpiperazin-1-yl)-2-hydroxy-propyl]-2,2-dimethyl-3H-benzofuran-4-carboxamideYield 45%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

The crude compound 7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-2,2-dimethyl-3H-benzofuran-4-carboxylic acid 4f (160 mg, 0.35 mmol), (2S)-1-amino-3-(4-methylpiperazin-1-yl)propan-2-ol 21c (60 mg, 0.35 mmol), O-(benzotriazol-1-yl)-N,N,N′,N′-tetra methyluronium tetrafluoroborate (111 mg, 0.35 mmol) and diisopropylethylamine (89 mg, 0.69 mmol) were dissolved in 25 mL of dichloromethane. The reaction solution was stirred for 2 hours. The resulting solution was added dropwise with saturated sodium bicarbonate solution to adjust pH to 8-9 and extracted with dichloromethane (50 mL×3). The combined organic phase was washed with water (50 mL), saturated sodium chloride solution (50 mL) successively, then dried over anhydrous magnesium sulfate, filtered and the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography to obtain the title compound 7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-N-[(2S)-3-(4-methylpiperazin-1-yl)-2-hydroxy-propyl]-2,2-dimethyl-3H-benzofuran-4-carboxamide 21 (90 mg, yield: 45.0%) as a white solid.

Workup

  1. extractionextracted with dichloromethane (50 mL×3)
  2. washThe combined organic phase was washed with water (50 mL), saturated sodium chloride solution (50 mL) successively
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. concentrationthe filtrate was concentrated under reduced pressure
  6. customThe resulting residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-254527c82e1e40a1898193766c1c560a
Source dataset
uspto-grants-2014_04
Patent number
US08691822B2

Reaction notes

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