Benzopyran compounds and preparation method thereof as well as pharmaceutical composition and use of benzopyran compounds
A technology of benzopyran and compounds, applied in the field of benzopyran compounds, can solve problems such as lack, lack of triglyceride regulation, hypoglycemia, etc.
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Embodiment 1
[0021] Example 1 6-methoxybenzo-2H-pyran-3-yl-2′,3′-dihydroxyphenyl ketone 1c
[0022]
[0023] (1) The preparation method of 6-methoxybenzopyran-3-carbonitrile
[0024] Dissolve 1g of 2-hydroxy-5-methoxybenzaldehyde in 2mL of acrylonitrile, add 2eq. of 1,4-diazabicyclo[2.2.2]octane, and reflux for 12h. The product 6-methoxybenzopyran-3-carbonitrile was obtained by column chromatography. 1 HNMR (500MHz, CDCl 3 ):7.13(s,1H),6.84(dd,J=9.0,3.0Hz,1H),6.82(d,J=9.0Hz,1H),6.63(d,J=2.5Hz,1H),4.75(s ,2H),3.77(s,1H); 13 CNMR (125MHz, CDCl 3 ):154.9,148.5,139.1,120.8,118.8,117.6,116.7,112.7,104.4,64.6,56.0; ESI-MS:[M+H] + :188.1,[M+NH 4 ] + :205.1.
[0025] (2) The preparation method of 6-methoxybenzo-2H-pyran-3-aldehyde
[0026] Under argon protection, 6-methoxychromene-3-carbonitrile was dissolved in toluene (150mg / mL), cooled to -50°C, added diisopropylaluminum hydride (1.1eq.) and stirred for 2h. Stirring was then continued for 2 h at room temperature. Add 100 mL of eth...
Embodiment 2
[0033] Example 2 5-methoxybenzo-2H-pyran-3-yl-2′,3′-dihydroxyphenyl ketone 1h
[0034]
[0035] (1) The preparation method of 5-methoxybenzopyran-3-carbonitrile
[0036] Dissolve 1g of 2-hydroxy-6-methoxybenzaldehyde in 2mL of acrylonitrile, add 2eq. of 1,4-diazabicyclo[2.2.2]octane, and reflux for 12h. The product 5-methoxybenzopyran-3-carbonitrile was obtained by column chromatography. 1 HNMR (500MHz, CDCl 3 ):7.54(s,1H),7.21(t,J=8.5Hz,1H),6.48(t,J=9.0Hz,2H),4.74(d,J=1.0Hz,2H),3.85(s,3H ); 13 CNMR (125MHz, CDCl 3 ):156.4, 155.2, 134.5, 133.0, 117.0, 110.3, 109.0, 104.1, 100.5, 63.9, 55.8; ESI-MS: [M+H] + :188.1,[M+NH 4 ] + :205.1.
[0037] (2) The preparation method of 5-methoxybenzo-2H-pyran-3-aldehyde
[0038] Under argon protection, 5-methoxychromene-3-carbonitrile was dissolved in toluene (150mg / mL), cooled to -50°C, added diisopropylaluminum hydride (1.1eq.) and stirred for 2h. Stirring was then continued for 2 h at room temperature. Add 100 mL of ethyl ac...
Embodiment 3
[0045] Example 3 8-methoxybenzo-2H-pyran-3-yl-2′,5′-dihydroxyphenyl ketone 1i
[0046]
[0047] (1) Preparation of 8-methoxybenzo-2H-pyran-3-carbonitrile
[0048] Dissolve 1g of 2-hydroxy-3-methoxybenzaldehyde in 2mL of acrylonitrile, add 2eq. of 1,4-diazabicyclo[2.2.2]octane, and reflux for 12h. The product 8-methoxybenzo-2H-pyran-3-carbonitrile was obtained by column chromatography. 1 HNMR (500MHz, CDCl 3 ):7.17(s,1H),6.93-6.91(m,2H),6.75-6.73(m,1H),4.87(d,J=1.0Hz,2H),3.88(s,1H); 13 CNMR (125MHz, CDCl 3 ):148.2, 143.4, 139.0, 122.3, 120.8, 120.4, 116.4, 115.4, 103.6, 64.7, 56.3; ESI-MS: [M+H] + :188.1,[M+NH 4 ] + :205.1.
[0049] (2) Preparation of 8-methoxybenzo-2H-pyran-3-yl-2′,5′-dihydroxyphenylketone
[0050] Add 8-methoxybenzo-2H-pyran-3-carbonitrile (0.2eq.) to the newly prepared Grignard reagent 2,5-bisMOMO-phenylmagnesium bromide, and reflux for 22h until the raw material disappears. Add 2N hydrochloric acid (2 mL) and reflux for 30 min. Add 100 mL of et...
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