Reaktion #88445

Reaktionsgleichung

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

water

LiOH.H2O

→

3-(3-hydroxypropyl)-5-isopentyl-6-(2-isopropylphenyl)-1-methylpyrido[3,4-d]pyrimidine-2,4(1H,3H)-dione

Ausbeute 23.6%

Lösungsmittel

THF

EA

Reaktionsbedingungen

Aufarbeitung

1. 1
   WaschenThe organic layer was washed with brine (5 mL)
2. 2
   Trocknendried over Na2SO4
3. 3
   Einengenconcentrated to a residue which
4. 4
   Sonstigewas purified by Prep HPLC

Vorschrift

To a solution of 3-(5-isopentyl-6-(2-isopropylphenyl)-1-methyl-2,4-dioxo-1,2-dihydropyrido[3,4-d]pyrimidin-3(4H)-yl)propyl formate (10 mg, 0.022 mmol in THF (0.5 mL) and water (0.5 mL) was added LiOH.H2O (1.8 mg, 0.044 mmol). The reaction was stirred at RT for 30 min then diluted with EA (5 mL). The organic layer was washed with brine (5 mL), dried over Na2SO4 and concentrated to a residue which was purified by Prep HPLC to give 3-(3-hydroxypropyl)-5-isopentyl-6-(2-isopropylphenyl)-1-methylpyrido[3,4-d]pyrimidine-2,4(1H,3H)-dione (2.2 mg, 23.6% yield) as a white solid. 1H NMR (CDCl3) δ: 8.66 (s, 1H), 7.41 (d, J=3.8 Hz, 2H), 7.26-7.23 (m, 1H), 7.11 (d, J=7.5 Hz, 1H), 4.28 (t, J=6.1 Hz, 2H), 3.72 (s, 3H), 3.65-3.54 (m, 2H), 3.35 (td, J=11.8, 4.5 Hz, 1H), 3.14 (t, J=6.6 Hz, 1H), 2.69 (d, J=11.9, 4.4 Hz, 1H), 2.53-2.40 (m, 1H), 2.04-1.91 (m, 2H), 1.45 (d, J=12.9, 6.4 Hz, 1H), 1.38-1.32 (m, 1H), 1.19 (d, J=6.9 Hz, 3H), 1.14 (dd, J=7.1, 4.8 Hz, 1H), 1.10 (d, J=6.8 Hz, 3H), 0.72 (d, J=6.6 Hz, 3H), 0.65 (d, J=6.6 Hz, 3H). LCMS: MH+ 424 and TR=3.102 min.

Quelle