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The new synthetic route of (±)shikalkin 1 was developed. 3-(1-Hydroxy-4-methyl-3- pentenyl)-5, 8-dimethoxy-1-naphthol 8 was obtained from compound 3 in 10 steps. Then (±)shikalkin 1 was synthesized from 8 in one step with reagents AgO/HNO3 in 1,