Sodium borohydride → HCID 59605452, compound

Participants

Reaction Steps

To a solution of 2-{3-[2-(2-ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purin-8-yl]-3-fluoroazetidin-1-yl}-2-methylpropionic acid ethyl ester (40 mg, 0.07 mmol) in IMS (4 mL) was added NaBH4 (28 mg, 0.73 mmol) and the resulting mixture stirred at r.t for 3 h. Further NaBH4 (28 mg, 0.73 mmol) was added and the mixture stirred for a further 18 h. The reaction mixture was quenched with H2O, extracted with EtOAc and the organic phase dried (Na2SO4) and concentrated in vacuo. The resulting residue was purified by column chromatography (Si—PCC, MeOH:EtOAc, 0-10%) then dissolved in a mixture of MeCN and H2O and allowed to freeze-dry affording 850 as a white solid (20 mg, 54%). LCMS (method I): RT 2.64 min, [M+H]+ 509.4. 1H NMR (DMSO, 400 MHz): δ 8.05-8.04 (1 H, m), 7.64-7.63 (1 H, m), 7.26-7.25 (2 H, m), 4.58-4.49 (1 H, m), 4.44-4.14 (4 H, brd m), 4.08 (2 H, dd, J=18.70, 9.19 Hz), 3.81-3.74 (9 H, m), 3.28-3.26 (2 H, m), 3.19 (2 H, d, J=5.40 Hz), 1.34 (3 H, t, J=7.43 Hz), 0.91 (6 H, s)

Provenance & Evidence