Hydrochloric Acid → 7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-N-[(2S)-3-[4-(cyclopropylmethyl)piperazin-1-yl]-2-hydroxy-propyl]-2,3-dihydrobenzofuran-4-carboxamide

HRID 2364689Notes

Reaction equation

HRID 2364689 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:26]([NH:28][CH2:29][C@H:30]([OH:45])[CH2:31][N:32]5[CH2:37][CH2:36][N:35](C(OC(C)(C)C)=O)[CH2:34][CH2:33]5)=[O:27])=[C:21]5[C:25]=4[O:24][CH2:23][CH2:22]5)[N:12]=[CH:11][C:10]=3[N:9]([CH3:46])[C:8](=[O:47])[C@H:7]2[CH2:48][CH3:49])[CH2:5][CH2:4][CH2:3][CH2:2]1.Cl.C(=O)(O)[O-].[Na+].Br[C:57]1([CH3:60])[CH2:59][CH2:58]1>ClCCl.C(N(CC)CC)C>[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:26]([NH:28][CH2:29][C@H:30]([OH:45])[CH2:31][N:32]5[CH2:37][CH2:36][N:35]([CH2:60][CH:57]6[CH2:59][CH2:58]6)[CH2:34][CH2:33]5)=[O:27])=[C:21]5[C:25]=4[O:24][CH2:23][CH2:22]5)[N:12]=[CH:11][C:10]=3[N:9]([CH3:46])[C:8](=[O:47])[C@H:7]2[CH2:48][CH3:49])[CH2:2][CH2:3][CH2:4][CH2:5]1

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 516892Sodium BicarbonateHCID 148649461-Bromo-1-methylcyclopropaneHCID 68107731tert-butyl 4-[(2S)-3-[[7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-2,3-dihydrobenzofuran-4-carbonyl]amino]-2-hydroxy-propyl]piperazine-1-carboxylate

Product 1

HCID 681073387-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-N-[(2S)-3-[4-(cyclopropylmethyl)piperazin-1-yl]-2-hydroxy-propyl]-2,3-dihydrobenzofuran-4-carboxamide

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8471TriethylamineSolvent

Procedure

Tert-butyl 4-[(2S)-3-[[7-[[(7R)-8-cyclopentyl-7-ethyl-5-methyl-6-oxo-7H-pteridin-2-yl]amino]-2,3-dihydrobenzofuran-4-carbonyl]amino]-2-hydroxy-propyl]piperazine-1-carboxylate 7d (300 mg, 0.44 mmol) was dissolved in 40 mL of dichloromethane. The reaction solution was filled with gas of hydrogen chloride and stirred for 0.5 hours. The reaction solution was concentrated under reduced pressure. The resulting residue was dissolved in 41 mL of acetonitrile followed by the addition of 183 mL of triethylamine, sodium bicarbonate (148 mg, 1.76 mmol) and bromo-methyl-cyclopropane (130 mg, 0.97 mmol). The resulting solution was stirred for 12 hours and filtered. 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-1-methyl-6-oxo-7H-pteridin-2-yl]amino]-N-[(2S)-3-[4-(cyclopropylmethyl)piperazin-1-yl]-2-hydroxy-propyl]-2,3-dihydrobenzofuran-4-carboxamide 7 (200 mg, yield: 72.0%) as a white solid.

Workup

  1. concentrationThe reaction solution was concentrated under reduced pressure
  2. dissolutionThe resulting residue was dissolved in 41 mL of acetonitrile
  3. stirringThe resulting solution was stirred for 12 hours
  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-478bfbdbc7a4411d9238676f559a56a1
Source dataset
uspto-grants-2014_04
Patent number
US08691822B2

Reaction notes

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