反应详情

A solution of 2-(2-ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purine-8-carbaldehyde (100 mg, 0.27 mmol) and azetidine-3-carboxylic acid dimethylamide hydrochloride salt (53 mg, 0.32 mmol) in DCE (4 mL) was stirred at ambient temperature for 1 h. Sodium triacetoxyborohydride (86 mg, 0.41 mmol) was added and the mixture stirred for 3 h, then loaded onto an Isolute® SCX-2 cartridge (10 g). The cartridge was then washed with methanol and the desired product was subsequently eluted using 2 M NH3 in MeOH. The product was collected and concentrated in vacuo. The resultant residue was purified by flash chromatography (Si—PPC, EtOAc:MeOH; gradient from 100:0 to 70:30) to afford 366 as a cream solid (107 mg, 83%). LCMS (Method G): RT=5.51 min, M+H+=504. 1H NMR (CDCl3, 400 MHz) δ 8.00 (m, 1 H); 7.75 (m, 1 H); 7.28 (m, 2 H); 4.34 (m, 4 H); 3.89-3.83 (m, 6 H); 3.83 (s, 3 H); 3.70-3.62 (m, 2 H); 3.57-3.46 (m, 3 H); 3.34 (q, J=7.5 Hz, 2 H); 2.96 (s, 3 H); 2.90 (s, 3 H) and 1.44 (t, J=7.5 Hz, 3 H)

1. washThe cartridge was then washed with methanol
2. washthe desired product was subsequently eluted
3. customThe product was collected
4. concentrationconcentrated in vacuo
5. customThe resultant residue was purified by flash chromatography (Si—PPC, EtOAc:MeOH; gradient from 100:0 to 70:30)