This invention is something regarding the abundant somatotype my amide derivative which possesses konekishin 26 obstruction activity, the dimer type my amide derivative, or the salt which with respect to the medicine reason is displayed by the below-mentioned formula (1) is allowed is included. (However, formula (1) in, n is integer of 3,5 or 8.)The new my amide derivative which relates to this invention, besides the fact that it can utilize, as the reagent for research has various uses of the medicine, the supplement and the functional food etc from the fact that useful physiological activity such as transfer control multiplication control of the cancer is shown, the preventive medicine remedy of the cancer as beginning, with respect to industry can utilize widely.本発明は、コネキシン26阻害活性を有する多量体型オレアミド誘導体に関するものであり、下記の式(1)により表される二量体型オレアミド誘導体、又はその薬理上許容される塩を含む。(ただし、式(1)中、nは3,5又は8の整数である。)本発明に係る新規オレアミド誘導体は、研究用試薬として利用できるほか、癌の転移抑制・増殖抑制など有用な生理活性を示すことから、癌の予防薬・治療薬をはじめとして、医薬、サプリメント、機能性食品などの各種用途を有し、産業上広く利用できる。