The invention discloses a 2-(3,4-dimethoxy)benzoyl-5-(4-substituted phenylethynyl)
thiophene. The
structural formula of the 2-(3,4-dimethoxy)benzoyl-5-(4-Substituted phenylethynyl)
thiophene is as shown in the specification. The preparation method of the 2-(3,4-dimethoxy)benzoyl-5-(4-Substituted phenylethynyl)
thiophene comprises the following steps: 1) reacting 2-bromothiophene with 3,4-dimethoxybenzoyl in a
solvent in the presence of a catalyst and then carrying out purification and separation to obtain 2-(3,4-dimethoxy)benzoyl-5-bromothiophene; 2) reacting the 2-(3,4-dimethoxy)benzoyl-5-bromothiophene with 4-substituted
phenylacetylene in a
solvent in the presence of
tetra(
triphenylphosphine)
palladium, CuI and an acid-binding agent, and then carrying out subsequent purification and separation. The invention also relates to application of the compound in preparation of anti-
breast cancer targeted treatment drugs, and an application of the compound in preparation of anti-
breast cancer resistance-reversal agents. The compound has relatively obvious proliferation inhibition effect on
human breast cancer cells and
breast cancer cell drug-resistant strains, and thus can be applied to preparation of the anti-breast
cancer targeted treatment
drug and the anti-breast
cancer resistance-reversal agent. The compound has the potential of large-scale industrial production and relatively low cost.