Preparation method of ubenimex side chain_Kain Industrial Additive

background and overview[1] ubenimex (bestatin) is a dipeptide compound isolated from the culture medium of streptomyces olivoreticuli. it was launched in japan in 1987 as an immune enhancer for the treatment of leukemia. ; ubenimesi was launched in china in 1998 under the trade name baishixin. bestatin has obvious immunomodulatory function and significant anti-tumor activity.…