Acetic Acid → 6-methyl-N2-(4-(oxazol-5-yl)phenyl)-N4-((tetrahydro-2H-pyran-4-yl)methyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine

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Reaction Steps

N2-(4-(Oxazol-5-yl)phenyl)-N4-((tetrahydro-2H-pyran-4-yl)methyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine (134 mg, 0.33 mmol) was dissolved in methanol (3 mL). Acetic acid (0.019 mL, 0.33 mmol) was added followed by formaldehyde (0.025 mL, 0.33 mmol). The reaction mixture was stirred at room temperature for 15 minutes and MP—CNBH3 was added. The reaction was stirred overnight. The MP—CNBH3 was filtered off and the solvent was evaporated under reduced pressure. The crude was dissolved in methanol, filtered and purified by HPLC yielding 6-methyl-N2-(4-(oxazol-5-yl)phenyl)-N4-((tetrahydro-2H-pyran-4-yl)methyl)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-2,4-diamine (23.00 mg, 15.8%).

Provenance & Evidence