Triethylamine → 1,3,5-trimethyl-1H-pyrazole-4-carboxylic acid {4-[3-cyclopropylmethyl-1-(2-fluorobenzyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-ylmethyl]-phenyl}-ethyl-amide

HRID 720689

Reaction equation

HRID 720689 reaction equation
C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[CH3:20][N:21]1[C:25]([CH3:26])=[C:24]([C:27]([OH:29])=O)[C:23]([CH3:30])=[N:22]1.ClN1C(=O)CCC1=O.[CH:39]1([CH2:42][N:43]2[C:51]3[N:50]=[C:49]([CH2:52][C:53]4[CH:58]=[CH:57][C:56]([NH:59][CH2:60][CH3:61])=[CH:55][CH:54]=4)[NH:48][C:47]=3[C:46](=[O:62])[N:45]([CH2:63][C:64]3[CH:69]=[CH:68][CH:67]=[CH:66][C:65]=3[F:70])[C:44]2=[O:71])[CH2:41][CH2:40]1.C(N(CC)CC)C>ClCCl.CN(C)C1C=CN=CC=1>[CH:39]1([CH2:42][N:43]2[C:51]3[N:50]=[C:49]([CH2:52][C:53]4[CH:54]=[CH:55][C:56]([N:59]([CH2:60][CH3:61])[C:27]([C:24]5[C:23]([CH3:30])=[N:22][N:21]([CH3:20])[C:25]=5[CH3:26])=[O:29])=[CH:57][CH:58]=4)[NH:48][C:47]=3[C:46](=[O:62])[N:45]([CH2:63][C:64]3[CH:69]=[CH:68][CH:67]=[CH:66][C:65]=3[F:70])[C:44]2=[O:71])[CH2:41][CH2:40]1

Participants

8

Reactant 5

HCID 8471TriethylamineHCID 11776TriphenylphosphineHCID 31398ChlorosuccinimideHCID 7365141,3,5-trimethyl-1H-pyrazole-4-carboxylic acidHCID 218918193-Cyclopropylmethyl-8-[4-(ethyl-amino)-benzyl]-1-(2-fluorobenzyl)-3,7-dihydro-purine-2,6-dione

Product 1

HCID 587392471,3,5-trimethyl-1H-pyrazole-4-carboxylic acid {4-[3-cyclopropylmethyl-1-(2-fluorobenzyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-ylmethyl]-phenyl}-ethyl-amideYield 82.2%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

A suspension of triphenylphosphine (59.3 mg, 0.226 mmol) and 1,3,5-trimethyl-1H-pyrazole-4-carboxylic acid (SALOR) (26.8 mg, 0.174 mmol) in dichloromethane was cooled to 0° C. and N-chlorosuccinimide added. The mixture was stirred at 0° C. for 0.5 h then ambient temperature for an additional 0.5 h. 3-Cyclopropylmethyl-8-[4-(ethyl-amino)-benzyl]-1-(2-fluorobenzyl)-3,7-dihydro-purine-2,6-dione (93.4 mg, 0.209 mmol) was added followed by triethylamine (30.2 mg, 0.226 mmol) and 4-dimethylaminopyridine (a few crystals). The reaction was left to stir at ambient temperature overnight before washing with 1M aqueous hydrochloric acid, saturated aqueous sodium bicarbonate, drying the organic extract (sodium sulfate) and concentrating in vacuo. Purification by chromatography using silica eluted with 5:9 methanol/dichloromethane gave the product as a colorless solid (83.5 mg, 69%). MS, m/z(M+H)=584.2787.

Workup

  1. waitambient temperature for an additional 0.5 h
  2. waitThe reaction was left
  3. stirringto stir at ambient temperature overnight
  4. washbefore washing with 1M aqueous hydrochloric acid, saturated aqueous sodium bicarbonate
  5. customdrying the
  6. extractionorganic extract (sodium sulfate)
  7. concentrationconcentrating in vacuo
  8. customPurification by chromatography
  9. washeluted with 5:9 methanol/dichloromethane

Sources & evidence

ORD record
ord-314541c9432d4781942a7834c8a30caf
Source dataset
uspto-grants-2006_11
Patent number
US07135475B2

Linked notes

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