Furan-azo- [3,2-g] chromene compound and application thereof
A technology of compounds and compositions, applied in the directions of active ingredients of heterocyclic compounds, digestive system, organic chemistry, etc.
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Embodiment 1
[0043] Example 1: Preparation of 2-benzoyl-3-(4-methoxyphenyl)-6,7-dihydro-5H-furo[3,2-g]chromene
[0044] Add 0.26 mol of 2', 4'-dihydroxyacetophenone into the round bottom flask, mix well with 232 mL of triethyl orthoformate, and slowly add 26.4 mL of perchloric acid thereinto. After reacting for 30 minutes, 300 mL of ether was added, and a solid was precipitated. Suction filtration, transfer the dried solid into a 1000mL round bottom flask, add 250mL hot water, reflux for two hours, suction filtration, recrystallization with ethanol to obtain 22.69g of 7-hydroxychromone, yield 53.2%, MS m / z (M) 162.
[0045] Put 0.15 mol of 7-hydroxychromone into a 1000 mL round bottom flask, add 2.50 g of 5% palladium carbon and 300 mL of ethanol, pass in hydrogen, react at 50 °C for 48 hours, remove the palladium carbon by suction filtration, and remove the ethanol by rotary evaporation. 21.39 g of 7-hydroxychroman was obtained, the yield was 92.4%, and MS m / z (M) was 150.
[0046] Dis...
Embodiment 2
[0049] Example 2: Preparation of 2-(4-methoxybenzoyl)-3-phenyl-6,7-dihydro-5H-furo[3,2-g]chromene
[0050] According to the method in Example 1, 0.65 grams of 2-(4-methoxybenzoyl)-3-phenyl-6,7-dihydro-5H-furo[3,2-g]chromene yellow crystals were obtained, Yield 60%, Mp: 130.3-132.5°C. ESI-MS m / z (M+1) 385.13; 1 HNMR (600MHz, CDCl 3 , δ: ppm) 2.04 (t, 2H, CH 2 ), 2.91(t, 2H, CH 2 ), 3.83 (s, 3H, OCH 3 ), 4.26(t, 2H, CH 2 ), 6.83(dd, 2H, ArH, J=7.0Hz, J=1.9Hz), 7.03(s, 1H, ArH), 7.30(s, 1H, ArH), 7.35-7.49(m, 5H, ArH), 7.90 (dd, 2H, ArH, J = 7.0 Hz, J = 1.9 Hz).
Embodiment 3
[0051] Example 3: Preparation of 2-(4-chlorobenzoyl)-3-(4-methoxyphenyl)-6,7-dihydro-5H-furo[3,2-g]chromene
[0052] According to the method of Example 1, 2-(4-chlorobenzoyl)-3-(4-methoxyphenyl)-6,7-dihydro-5H-furo[3,2-g]chromene was obtained 0.56 g of yellow crystals, yield 60%, Mp: 135.3-137.5°C. ESI-MS m / z (M+1) 419.13; 1 HNMR (600MHz, CDCl 3 , δ: ppm): 2.05(t, 2H, CH 2 ), 2.91(t, 2H, CH 2 ), 3.84(s, 3H, OCH 3 ), 4.27(t, 2H, CH 2 ), 6.92(dd, 2H, ArH, J=7.0Hz, J=1.9Hz), 7.00(s, 1H, ArH), 7.31-7.32(m, 3H, ArH), 7.40-7.41(m, 2H, ArH ), 7.80 (dd, 2H, ArH, J = 7.0 Hz, J = 1.9 Hz).
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