5-ethenyl-2,7-dimethoxy-1-methyl-9,10-dihydrophenanthrene

lithium methylmercaptide

3-羟基-5-碘苯甲酸甲酯

methyl 2-bromo-5-methoxy-3-methylbenzoate

methyl 6-bromo-3-hydroxy-5-methylbenzoate