The present invention discloses a compound for inhibiting the proliferation of smooth muscle cells and a pharmaceutical composition thereof. The compound is shown as following formula (1), wherein n represents an integral of 1 to 10 and R1, R2, R3and R4represent independently one of hydrogen, alkoxy groups, hydroxyl groups, carboxyl groups, alkyl groups, haloalkyl groups and oxygen groups.本發明係揭露一種用於抑制平滑肌細胞增生之化合物及其醫藥組合物,其化合物之結構如式(1)所示,其中n為1至10之整數,且R1、R2、R3及R4係分別選自氫、烷氧基、羥基、羧基、烷基、鹵烷基及氧基之其中之一。
