反应详情

A solution of (1S,2S)-1-N-[3-ethyl-5-(trifluoromethyl)pyrazin-2-yl]cyclopentane-1,2-diamine hydrochloride (Intermediate 41; 450 mg, 1.64 mmol), 2-(3-methyl-1,2,4-oxadiazol-5-yl)benzoic acid (CAS number 475105-77-2; 335 mg, 1.64 mmol), 3H-[1,2,3]triazolo[4,5-b]pyridin-3-ol (335 mg, 2.46 mmol), EDC (472 mg, 2.46 mmol) and triethylamine (0.687 ml, 4.92 mmol) in DCM (5 ml) was stirred at room temperature for 16 hours. The reaction was partitioned between DCM and a saturated solution of sodium bicarbonate, filtered through a hydrophobic frit and loaded directly on to a cation/anion mixed mode cartridge, eluted with DCM and concentrated in vacuo. The resulting residue was purified by reverse phase chromatography (C18 silica, 0-100% water (0.1% ammonia)/acetonitrile) and recrystalised from MTBE/heptane to afford the title compound.

1. customThe reaction was partitioned between DCM
2. filtrationa saturated solution of sodium bicarbonate, filtered through a hydrophobic frit
3. additionmixed mode cartridge
4. washeluted with DCM
5. concentrationconcentrated in vacuo
6. customThe resulting residue was purified by reverse phase chromatography (C18 silica, 0-100% water (0.1% ammonia)/acetonitrile) and
7. customrecrystalised from MTBE/heptane