Hydrochloric Acid → 2-((1R,2S)-2-Aminocyclohexylamino)-4-(m-tolylamino)-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-5-one

HRID 2092732Notes

Reaction equation

HRID 2092732 reaction equation
[O:1]=[C:2]1[C:10]2[C:9]([NH:11][C:12]3[CH:13]=[C:14]([CH3:18])[CH:15]=[CH:16][CH:17]=3)=[N:8][C:7]([NH:19][C@@H:20]3[CH2:25][CH2:24][CH2:23][CH2:22][C@@H:21]3[NH:26]C(=O)OC(C)(C)C)=[N:6][C:5]=2[CH2:4][NH:3]1.Cl>CC(O)=O>[NH2:26][C@H:21]1[CH2:22][CH2:23][CH2:24][CH2:25][C@H:20]1[NH:19][C:7]1[N:8]=[C:9]([NH:11][C:12]2[CH:13]=[C:14]([CH3:18])[CH:15]=[CH:16][CH:17]=2)[C:10]2[C:2](=[O:1])[NH:3][CH2:4][C:5]=2[N:6]=1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 86654703tert-Butyl (1S,2R)-2-(5-oxo-4-(m-tolylamino)-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-2-ylamino)cyclohexylcarbamate

Product 1

HCID 532517972-((1R,2S)-2-Aminocyclohexylamino)-4-(m-tolylamino)-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-5-oneYield 29%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

To a solution of tert-butyl (1S,2R)-2-(5-oxo-4-(m-tolylamino)-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-2-ylamino)cyclohexylcarbamate (50.4 mg, 0.111 mmol) in HOAc (2 mL) was added hydrochloric acid (0.5 mL, 16.46 mmol). The mixture was stirred at RT for 30 min and then concentrated under reduced pressure. The residue was treated with saturated aq NaHCO3 and extracted with EtOAc. The organic layers were washed with saturated aq NaHCO3, water, and brine, were dried over anhydrous Na2SO4, and then filtered. The filtrate was concentrated under reduced pressure and the residue was purified by column chromatography (SiO2, EtOAc/MeOH=20/1) to give the title compound as a white powder (11.3 mg, 29%). 1H NMR (400 MHz, CDCl3) δ ppm 1.48-1.80 (m, 10H), 2.37 (s, 3H), 3.24 (br s, 1H), 4.07 (br s, 1H), 4.20 (s, 2H), 5.55 (br s, 1H), 5.89 (br s, 1H), 6.89-6.91 (m, 1H), 7.22-7.24 (m, 1H), 7.53-7.63 (m, 2H), 8.49 (br s, 1H). [M+H] calc'd for C19H25N6O, 353. found, 353.

Workup

  1. concentrationconcentrated under reduced pressure
  2. additionThe residue was treated with saturated aq NaHCO3
  3. extractionextracted with EtOAc
  4. washThe organic layers were washed with saturated aq NaHCO3, water, and brine
  5. dry with materialwere dried over anhydrous Na2SO4
  6. filtrationfiltered
  7. concentrationThe filtrate was concentrated under reduced pressure
  8. customthe residue was purified by column chromatography (SiO2, EtOAc/MeOH=20/1)

Sources & evidence

ORD record
ord-f85ecfed5b514b06b861234c41244571
Source dataset
uspto-grants-2013_05
Patent number
US08440689B2

Reaction notes

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