2980-32-7Relevant academic research and scientific papers
Method for preparing 1,3,5,8-tetrahydroxy xanthone and 1,3,7,8-tetrahydroxy xanthone
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Paragraph 0039; 0050-0051, (2019/09/14)
The invention discloses a method for preparing 1,3,5,8-tetrahydroxy xanthone and 1,3,7,8-tetrahydroxy xanthone. The method comprises the following steps: by taking 1,2,4-trimetoxybenzene as an initialraw material, and adding n-butyllithium and a chloro-ca
A bellidifodin preparing method
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Paragraph 0009; 0010, (2017/05/10)
A bellidifodin preparing method is disclosed. The method includes preparing methanesulfonic acid and phosphorus pentoxide according to a ratio into a composite medium, adding 2,6-dihydroxybenzoic acid and phloroglucinol into the medium, performing a reaction to obtain 1,3,8-trihydroxy xanthenone, performing selective oxidation under alkaline conditions through using potassium persulfate to obtain 1,3,5,8-tetrahydroxy xanthenone, and subjecting the 1,3,5,8-tetrahydroxy xanthenone and iodomethane to methylation to obtain the target compound that is the bellidifodin. According to the method, reaction steps are shortened, reaction operation is simplified, the yield is increased and the method has certain application value.
