Formaldehyde → HCID 178466730, compound

Participants

Reaction Steps

Benzyl 3-{3-chloro-6-ethoxy-2-methyl-5-[1-(9H-purin-6-ylamino)ethyl]phenyl}azetidine-1-carboxylate (83 mg, 0.16 mmol) and 5% palladium (74 mg) was combined in methanol (5 mL), to which was added 0.25 M HCl in water (1.6 mL, 0.40 mmol). The suspension was hydrogenated under balloon pressure of H2 at room temperature overnight. The suspension was filtered and concentrated to give N-[1-(3-azetidin-3-yl-5-chloro-2-ethoxy-4-methylphenyl)ethyl]-9H-purin-6-amine. LCMS calculated for C19H24ClN6O (M+H)+: m/z=387.2. found: 387.1. The azetidine made above was combined with DIPEA (0.1 mL, 0.6 mmol) in methanol (0.5 mL)/acetonitrile (0.5 mL)/THF (0.5 mL), followed by the addition of 37% formaldehyde (0.1 mL, 2 mmol). The mixture was stirred at room temperature for 10 min before the addition of sodium triacetoxyborohydride (0.17 g, 0.80 mmol). The reaction mixture was stirred at room temperature overnight, then diluted with MeOH and purified on RP-HPLC (XBridge C18 Column, eluting with a gradient of acetonitrile in water with 0.2% ammonium hydroxide, at flow rate of 30 mL/min) to give the desired product. LCMS calculated for C20H26ClN6O (M+H)+: m/z=401.2. found: 401.1.

Provenance & Evidence