5-((4-chlorophenyl) (hydroxy)methyl)-1-methyl-6-(pyridin-3-yloxy)-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione → 3-(5-(4-chlorobenzyl)-1-methyl-2,4-dioxo-6-(pyridin-3-yloxy)-1,2-dihydropyrido[2,3-d]pyrimidin-3(4H)-yl)propyl formate

Participants

Reaction Conditions

Reaction Steps

To a solution of 5-((4-chlorophenyl)(hydroxy)methyl)-1-methyl-6-(pyridin-3-yloxy)-3-(3-((tetrahydro-2H-pyran-2-yl)oxy)propyl)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (71 mg, 0.128 mmol) in HCOOH (3 mL) was added Zn dust (40.9 mg, 0.641 mmol). The reaction was heated at 50° C. for 2 h, cooled and filtered. The filtrate was concentrated to a residue which was purified by Prep TLC eluted with PE/EA (1:1) (three times) to give 3-(5-(4-chlorobenzyl)-1-methyl-2,4-dioxo-6-(pyridin-3-yloxy)-1,2-dihydropyrido[2,3-d]pyrimidin-3(4H)-yl)propyl formate (10.3 mg, 16.7% yield) as an oil. LCMS: MH+ 481 and TR=1.399 min.

Provenance & Evidence