Abstract
An efficient method for the conversion of available plant allylpolyalkoxybenzenes into unsubstituted and arylsubstituted polymethoxylated aryldihydrobenzo[g]indazoles, analogues of combretastatin A4, has been developed. The selective demethylation of target compounds resulted in indazoles with different position of OH-group. Their structure was confirmed by X-ray analysis. A sea urchin embryo assay revealed the lack of tubulin-related antimitotic activity of aryldihydrobenzo[g]indazoles with systemic toxicity of a compound featuring OH group and 1-unsubstituted pyrazole ring.
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