Tissue bud cell active protein is obstructed effectively and selectively, it discloses concerning the boron acid or peptide based chemical compound which includes the cyano basis. There is also other cure, but especially, peptide based chemical compound probably is useful in cancer remedy.線維芽細胞活性タンパクαを効果的かつ選択的に阻害する、ボロン酸またはシアノ基を含むペプチド系化合物について開示する。他の治療法もあるが、とりわけ、ペプチド系化合物ががん治療に有用であろう。