Provided is a semi-synthesis method for luteolin, galuteolin and luteolin rutinoside. In the method, two steps of dehydrogenation and demethylation are combined into one step, and reaction conditions of dehydrogenation and demethylation are mild and easy to control; few reagents are used so that the method is green and environmentally friendly; and the demethylation yield is high, and industrial production is easy to realize.
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