Guaiac orchid hydrocarbon azulene ramification and preparing method and application thereof
A technology for guaiazulene and derivatives, applied in the field of guaiazulene derivatives and their preparation and application, capable of solving problems such as compound performance change and loss
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[0047] Among them, the preparation method of starting compound A can be found in Chinese patent application: 201310127788.8. The synthesis of embodiment 1 compound B1~B8
[0048] Add 10mL of isopropanol to a 25mL flask, then dropwise add 10 drops of dilute hydrochloric acid, then add 0.4g of paraformaldehyde, then add 0.2g of compound A, add 4mL of acetone, and fully Stir, keep the temperature at 45°C, and reflux with a condenser tube. The reaction time is 48h. Cool down after stopping heating, add water corresponding to its volume into the reaction flask, extract with ethyl acetate and spin dry, the crude product is purified by column chromatography, and dried under reduced pressure to obtain compound B1.
[0049] Refer to the preparation method of compound B1, change the reaction raw material compound B to obtain compounds B2-B8, and the detection data of each compound are as follows:
[0050] B1:
[0051] Purple crystal, yield 39.0%, m.p.57-58°C; IR (KBr): 3449, 2960, 292...
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