反応 #88442

反応方程式

3-(3-(tert-butyldimethylsilyloxy)propyl)-5-((4-chlorophenyl)(hydroxy)methyl)-6-(2-isopropylphenyl)-1-methylpyrido[3,4-d]pyrimidine-2,4(1H,3H)-dione

HCOOH

→

3-(5-(4-chlorobenzyl)-6-(2-isopropylphenyl)-1-methyl-2,4-dioxo-1,2-dihydropyrido[3,4-d]pyrimidin-3(4H)-yl)propyl formate

収率 56.0%

溶媒

EA

water

反応条件

後処理

1. 1
   温度cooled to RT
2. 2
   洗浄The organic layer was washed with brine (1 mL)
3. 3
   乾燥dried over Na2SO4
4. 4
   濃縮concentrated to a residue which
5. 5
   その他was purified by Prep TLC
6. 6
   洗浄eluted with PE/EA (2:1)

実験手順

To a solution of 3-(3-(tert-butyldimethylsilyloxy)propyl)-5-((4-chlorophenyl)(hydroxy)methyl)-6-(2-isopropylphenyl)-1-methylpyrido[3,4-d]pyrimidine-2,4(1H,3H)-dione (15 mg, 0.0247 mmol) in HCOOH (1 mL) was added Zn dust (8 mg, 0.123 mmol). The reaction was heated at 50° C. for 1 h, cooled to RT then diluted with EA (5 mL) and water (1 mL). The organic layer was washed with brine (1 mL), dried over Na2SO4 and concentrated to a residue which was purified by Prep TLC eluted with PE/EA (2:1) to give 3-(5-(4-chlorobenzyl)-6-(2-isopropylphenyl)-1-methyl-2,4-dioxo-1,2-dihydropyrido[3,4-d]pyrimidin-3(4H)-yl)propyl formate (7 mg, 56% yield) as a colorless oil. LCMS: MH+ 506 and TR=2.225 min.

出典