تفاعل #88703

معادلة التفاعل

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

LiOH.H2O

→

5-(4-chlorobenzyl)-6-((5-fluoropyridin-3-yl)oxy)-3-(3-hydroxypropyl)-1-methyl pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione

المردود 13.3%

المذيبات

THF

water

EA

water

ظروف التفاعل

المعالجة

1. 1
   تجفيفThe organic layer was dried over Na2SO4
2. 2
   تركيزconcentrated to a residue which
3. 3
   أخرىwas purified by Prep TLC
4. 4
   غسيلeluted with PE/EA (1:1)

الإجراء التجريبي

To a solution of 3-(5-(4-chlorobenzyl)-6-((5-fluoropyridin-3-yl)oxy)-1-methyl-2,4-dioxo-1,2-dihydropyrido[2,3-d]pyrimidin-3(4H)-yl)propyl formate (32 mg, 0.064 mmol) in THF (6 mL) and water (6 mL) was added LiOH.H2O (5.38 mg, 0.128 mmol). The reaction was stirred at RT for 30 min then diluted with EA (10 mL) and water (10 mL). The organic layer was dried over Na2SO4 and concentrated to a residue which was purified by Prep TLC eluted with PE/EA (1:1) and then Prep HPLC to give 5-(4-chlorobenzyl)-6-((5-fluoropyridin-3-yl)oxy)-3-(3-hydroxypropyl)-1-methyl pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (4 mg, 13.2% yield) as a white solid. 1H NMR (CDCl3) δ: 8.47-8.35 (m, 2H), 8.03 (s, 1H), 7.76 (d, J=3.0 Hz, 1H), 7.18 (d, J=8.4 Hz, 2H), 7.12 (d, J=8.4 Hz, 2H), 4.24 (t, J=6.1 Hz, 2H), 4.06 (s, 2H), 3.73 (s, 3H), 3.57 (t, J=5.6 Hz, 2H), 2.01-1.88 (m, 2H). LCMS: MH+ 471 and TR=2.246 min.

المصدر