Sodium triacetoxyborohydride → HCID 59605776, compound

Participants

Reaction Steps

A mixture of 2-(2-ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purine-8-carbaldehyde (0.1 g, 0.255 mmol), 4-((S)-3-fluoropyrrolidin-1-yl)piperidine (0.053 g, 0.307 mmol) and 4 Å molecular sieves (0.25 g) in DCE (4 mL) was stirred for 3 h at room temperature. Sodium triacetoxyborohydride (0.109 g, 0.51 mmol) was added and the reaction mixture was stirred for 18 h at room temperature. The reaction mixture was filtered through Celite and the filtrate was concentrated in vacuo. The residue was purified by flash chromatography (Si—PPC, MeOH:EtOAc, gradient 0:100 to 40:60) to give 565 as a white solid (0.121 g, 87%). LCMS (Method I): RT=2.26 min, [M+H]+ 548.2 1H NMR (400 MHz, DMSO-d6): δ 8.04-8.00 (m, 1 H), 7.65-7.61 (m, 1 H), 7.26-7.21 (m, 2 H), 5.16 (dt, J=56.0, 5.5 Hz, 1 H), 4.50-3.96 (m, 4 H), 3.82 (s, 3 H), 3.79-3.74 (m, 4 H), 3.75 (s, 2 H), 3.32-3.19 (q, J=7.4 Hz, 2 H), 2.89-2.74 (m, 4 H), 2.69-2.55 (m, 1 H), 2.37-2.28 (m, 1 H), 2.15-1.97 (m, 4 H), 1.90-1.74 (m, 3 H), 1.45-1.34 (m, 2 H), 1.34 (t, J=7.4 Hz, 3 H)

Provenance & Evidence