Tripterygium wilfordii derivative and application
A technology of Tripterygium wilfordii and its derivatives, applied in the field of tripterygium wilfordii derivatives and applications, can solve the problems of limiting the large-scale application of tripterygium wilfordii, high toxicity and side effects of tripterygium wilfordii, poor physical and chemical properties, etc., achieve low cost, increase application performance, The effect of improving physical and chemical properties
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Embodiment 1
[0040] Preparation;
[0041] Step 1: Dissolve 3-hydroxybenzoic acid (3g), dimethylamine tetrahydrofuran solution (10mL) and HATU (5g) in dichloromethane (10mL), and stir overnight at room temperature. After the reaction, extract with dichloromethane, the organic phase was washed with dilute hydrochloric acid and distilled water, dried, and concentrated under reduced pressure to obtain the compound 3-hydroxy-N,N-dimethylbenzamide (2.1g, white solid), which was used directly In the next step reaction.
[0042] Step 2: Dissolve 3-hydroxy-N,N-dimethylbenzamide (2g) and 3-fluoro-4-nitrobenzaldehyde (2.5g) in anhydrous DMF (15mL) under nitrogen protection Add anhydrous potassium carbonate powder (4g). React at 80°C for 3h, cool to room temperature, extract with dichloromethane, dry the organic phase, concentrate, crystallize with methyl tert-butyl ether to obtain compound 3-(5-aldehyde-2-nitrophenoxy)-N,N -Dimethylbenzamide (1.8 g, white solid).
[0043] Step 3: Add 3-(5-aldehyde-2-ni...
Embodiment 2
[0047] Using the same method as in the first and second steps of Example 1, and replacing the anhydrous ethanol in the third part with anhydrous methanol, which is:
[0048]
[0049] Then react with triptolide to produce
Embodiment 3
[0051] Using the same method as in Example 1, 3-(5-(hydroxyethyl)-2-nitrophenoxy)-N,N-dimethylbenzamide was prepared,
[0052] Then react with triptolide to produce
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