تفاعل #169655

معادلة التفاعل

rac-6-[(6-chloropyridin-3-yl)methyl]-3-[(3R,4R)-3-hydroxypiperidin-4-yl]benzo[h]quinazolin-4(3H)-one

triethylamine

acetic anhydride

→

title compound

rac-3-[(3R,4R)-1-acetyl-3-hydroxypiperidin-4-yl]-6-[(6-chloropyridin-3-yl)methyl]benzo[h]quinazolin-4(3H)-one

المذيبات

dichloromethane

ظروف التفاعل

المعالجة

1. 1
   أخرىquenched with water
2. 2
   تركيزconcentrated in vacuo
3. 3
   أخرىThe resultant residue was subjected to purification via reverse phase HPLC

الإجراء التجريبي

To a solution of rac-6-[(6-chloropyridin-3-yl)methyl]-3-[(3R,4R)-3-hydroxypiperidin-4-yl]benzo[h]quinazolin-4(3H)-one (Example 35, 0.050 g, 0.11 mmol) in 2 mL of dichloromethane at 0° C. was added triethylamine (0.023 mL, 0.16 mmol) and acetic anhydride (0.013 mL, 0.14 mmol). The reaction was stirred at 0° C. for 5 h, quenched with water, and concentrated in vacuo. The resultant residue was subjected to purification via reverse phase HPLC to provide the title compound that gave a proton NMR spectra consistent with theory and a mass ion (ES+) of 462.9 for M+H+: 1H NMR (400 MHz, CDCl3) p9.01-9.00 (m, 1H), 8.37 (s, 1H), 8.37 (s, 1H), 7.96 (d, J=7.1 Hz, 1H), 7.88 (s, 1H), 7.72-7.68 (m, 2H), 7.41 (d, 8.7 Hz, 1H), 7.22-7.20 (m, 1H), 5.07-5.01 (m, 1H), 4.92-4.67 (m, 2H), 4.44 (s, 2H), 4.23-3.98 (m, 3H), 3.34-3.24 (m, 1H), 3.20-3.11 (m, 1H), 2.22 (s, 3H).

المصدر