Indole compound with antivirus activity in radix isatidis and derivative of indole compound
A compound and selected technology, applied in the field of medicine, can solve the problems of undiscovered anti-HIV and anti-influenza virus activity and the like
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Embodiment 1
[0228] Embodiment 1: Preparation of 2-(1-hydroxyl-1H-indol-3-yl)-N-phenylacetamide
[0229]
[0230] In the first step, weigh indole acetic acid (1.05g), add dichloromethane (20mL) to suspend and stir, add EDCI (1.27g) at room temperature, stir and dissolve; add aniline (0.62g), DMAP (0.15g), Stir the reaction at room temperature for 3 h; add 2N hydrochloric acid and stir rapidly for 10 min, and separate the phases; add saturated brine (10 mL) to the organic phase and stir for 10 min, and separate the phases; -indol-3-yl)-N-phenylacetamide.
[0231] In the second step, 2-(1H-indol-3-yl)-N-phenylacetamide was dissolved in trifluoroacetic acid (10mL), triethylsilane (1.74g) was added, and the reaction was refluxed at 60°C for 3h; the reaction solution Recover the solvent, add ethyl acetate (30mL), saturated aqueous sodium bicarbonate (30mL), stir rapidly for 15min, and separate the phases; extract the aqueous phase with ethyl acetate (30mL), and separate the phases; combine ...
Embodiment 2
[0233] Embodiment 2: Preparation of ethyl-2-[2-(1-hydroxyl-1H-indol-3-yl)acetamide]benzoate
[0234]
[0235] The first step, weigh indole acetic acid (1.05g), add dichloromethane (20mL) to suspend and stir, add EDCI (1.27g) at room temperature, stir to dissolve; add ethyl anthranilate (1.09g), DMAP (0.15g), stirred at room temperature for 3h; added 2N hydrochloric acid and stirred quickly for 10min, and separated the phases; added saturated brine (10mL) to the organic phase and stirred for 10min, and separated the phases; the organic phase was removed under reduced pressure at 40°C to obtain light reddish-brown oil Crude ethyl-2-[2-(1H-indol-3-yl)acetamide]benzoate.
[0236]In the second step, ethyl-2-[2-(1H-indol-3-yl)acetamide]benzoate was dissolved in trifluoroacetic acid (10mL), triethylsilane (1.74g) was added, 60 Reflux reaction at ℃ for 3h; the solvent was recovered from the reaction solution, ethyl acetate (30mL) and saturated aqueous sodium bicarbonate (30mL) wer...
Embodiment 3
[0238] Embodiment 3: the preparation of methyl-3-[2-(1-hydroxyl-1H-indol-3-yl)acetamide]-4-methylbenzoate
[0239]
[0240] The first step, weigh indole acetic acid (1.05g), add dichloromethane (20mL) to suspend and stir, add EDCI (1.27g) at room temperature, stir to dissolve; add 4-methyl-3-amino-benzoic acid methyl Ester (1.09g), DMAP (0.15g), stirred at room temperature for 3h; added 2N hydrochloric acid and stirred rapidly for 10min, and separated the phases; added saturated brine (10mL) to the organic phase and stirred for 10min, and separated the phases; the organic phase was removed under reduced pressure at 40°C , to obtain crude methyl-3-[2-(1H-indol-3-yl)acetamide]-4-methylbenzoate as light reddish brown oil.
[0241] In the second step, methyl-3-[2-(1H-indol-3-yl)acetamide]-4-methylbenzoate was dissolved in trifluoroacetic acid (10mL), and triethylsilane ( 1.74 g), reflux at 60°C for 3 h; the solvent was recovered from the reaction solution, ethyl acetate (30 mL...
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