Novel hydroxyindole derivative
A hydroxyl and alkyl technology, applied in the field of novel oxindole derivatives, can solve problems such as no discovery
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Embodiment 1
[0153] (3E)-3-[(5-((E)-(2-indolinone-3-methylidene)methyl)furan-2-yl)methylene]indolin-2-one (1 )
[0154] Oxindole (1 equivalent), diformylfuran (0.5 equivalent) and piperidine (0.2 equivalent) were dissolved in 1 mL of ethanol per 1 μmol, and stirred at room temperature for 12 hours. After the reaction, the precipitate was filtered, washed several times with cold ethanol, and dried to obtain the target compound with a yield of 45%.
[0155] 1 H-NMR (d 6 -DMSO, 400Mz): 13.20(s, 1H), 13.18(s, 1H), 11.01(d, J=7.84Hz, 1H), 10.98(d, J=3.92Hz), 10.43(d, J=7.84Hz , 1H), 10.10(d, J=7.35Hz, 1H), 10.08(s, 1H), 9.96(d, J=3.92Hz, 1H), 9.82(s, 1H), 9.80-9.65(m, 2H) , 9.52(t, J=7.84Hz, 1H-), 9.37(t, J=7.84Hz, 1H), 9.11(t, J=7.84Hz, 1H), MS m / z: 355(M) + .
[0156]
Embodiment 2
[0158] (3E)-1-acetyl-3-[((5E)-((1-acetyl-2-indolone-3-methylidene)methyl)furan-2-yl)methylene]ind Indolin-2-one(2)
[0159] Oxindole (1 equivalent) was dissolved in acetic anhydride and heated to reflux for 3 days. After cooling, the reaction solution was poured into ice water, and the precipitate was filtered, washed with water, and dried to obtain 1-acetyloxindole. By the same method as in Example 1, the target compound was obtained from 1-acetyloxindole and diformylfuran.
[0160] 1 H-NMR (d 6 -DMSO, 400Mz): 11.05(d, J=7.84Hz, 1H), 11.00(d, J=3.92Hz), 10.46(d, J=7.84Hz, 1H), 10.13(d, J=7.35Hz, 1H ), 10.04(s, 1H), 9.94(d, J=3.92Hz, 1H), 9.80(s, 1H), 9.78-9.63(m, 2H), 9.43(t, J=7.84Hz, 1H-), 9.30(t, J=7.84Hz, 1H), 9.08(t, J=7.84Hz, 1H), 2.38(s, 3H), 2.36(s, 3H). MS m / z: 438(M) + .
[0161]
Embodiment 3
[0163] (3E)-3-((5-((E)-(1-acetyl-2-indolone-3-methylidene)methyl)furan-2-yl)methylene)indoline- 2-keto(3)
[0164] Diformylfuran (1 equivalent) was dissolved in ethanol, and a solution of oxindole (0.5 equivalent) and piperidine (0.1 equivalent) dissolved in ethanol was slowly added thereto. After the addition was complete, it was stirred at room temperature for 2 hours. After the reaction, the precipitate was filtered and removed, acetone was added to the filtrate, and it was made acidic with 1N-hydrochloric acid solution, and dried and solidified under reduced pressure to obtain 5-((E)-(indoline-3-methyl (ylidene)methyl)furan-2-carbaldehyde (yield 31%). Then 5-((E)-(indoline-3-methylene)methyl)furan-2-carbaldehyde (1.2 equiv), 1-acetyloxindole (1 equiv) and piperidine (0.1 equiv ) was dissolved in ethanol and stirred at room temperature for 12 hours. After the reaction, the precipitate was filtered, washed with cold ethanol, and dried to obtain the target product.
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