Water → 1-(3-(S)-methyl-7-methyloct-6-enyl)-3,7-dimethylxanthine

HRID 1954114Notes

Reaction equation

HRID 1954114 reaction equation
[H-].[Na+].[NH:3]1[C:14](=[O:15])[C:13]2[N:11]([CH3:12])[CH:10]=[N:9][C:8]=2[N:6]([CH3:7])[C:4]1=[O:5].[CH2:16](Br)[CH2:17][C@H:18]([CH2:20][CH2:21][CH:22]=[C:23]([CH3:25])[CH3:24])[CH3:19].O>CS(C)=O>[CH3:19][C@@H:18]([CH2:20][CH2:21][CH:22]=[C:23]([CH3:25])[CH3:24])[CH2:17][CH2:16][N:3]1[C:14](=[O:15])[C:13]2[N:11]([CH3:12])[CH:10]=[N:9][C:8]=2[N:6]([CH3:7])[C:4]1=[O:5]

Participants

6

Reactant 4

HCID 962WaterHCID 5429TheobromineHCID 24758Sodium hydrideHCID 10900106(S)-(+)-Citronellyl bromide

Product 1

HCID 228614851-(3-(S)-methyl-7-methyloct-6-enyl)-3,7-dimethylxanthineYield 80%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

This example illustrates a synthesis of 1-(3-(S)-methyl-7-methyl-6,7-oxidooctyl)-3,7-dimethylxanthine (inventive compound no. 1588S). Sodium hydride (95%) (631 mg, 25 mmol) was added to a solution of theobromine (4.14 g, 23 mmol) in dimethylsulfoxide (75 mL). After 20 minutes of stirring, (S)(-)Citronellyl bromide (5.0 g, 22.8 mmol) was added. After 16 hours of stirring at room temperature, the reaction mixture was poured into a separatory funnel containing 500 mL water and extracted with dichloromethane (3×100 mL). The organic portions were combined, washed with water (100 mL) and brine (100 mL), dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The crude product obtained was further purified by flash chromatography over silica gel using 30% petroleum ether/ethyl acetate eluant to yield 5.7 g (80% yield) 1-(3-(S)-methyl-7-methyloct-6-enyl)-3,7-dimethylxanthine (inventive compound no. 1596S) as an yellow oil.

Workup

  1. stirringAfter 16 hours of stirring at room temperature
  2. additionthe reaction mixture was poured into a separatory funnel
  3. extractionextracted with dichloromethane (3×100 mL)
  4. washwashed with water (100 mL) and brine (100 mL)
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe crude product obtained
  8. customwas further purified by flash chromatography over silica gel using 30% petroleum ether/ethyl acetate eluant

Sources & evidence

ORD record
ord-83ac18d9712b4a8daf771ed6ca1650f5
Source dataset
uspto-grants-2000_09
Patent number
US06121270

Reaction notes

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