PROBLEM TO BE SOLVED: To provide a novel anti-tuberculosis agent showing antibacterial activity against multi-drug resistant tuberculosis and super-multi-drug resistant tuberculosis.SOLUTION: The present invention provides a cyclic peptide compound having a specific structure illustrated below, or a pharmaceutically acceptable salt thereof: cyclo(N-substituted Thr-D-Arg-Ser-Gly-D-N-MePhe-Leu-D-Arg-Glu-D-Gln-D-Trp-Ile-Thr).EFFECT: The anti-tuberculosis agent is effective even against multi-drug resistant tuberculosis and super-multi-drug resistant tuberculosis.SELECTED DRAWING: None【課題】多剤耐性結核菌や超多剤耐性結核菌に対しても抗菌活性を示す、新規抗結核菌剤の提供。【解決手段】下記に示す特定の構造を有する環状ペプチド化合物又はその製薬学的に許容される塩。ｃｙｃｌｏ(Ｎ－置換Ｔｈｒ－Ｄ－Ａｒｇ－Ｓｅｒ－Ｇｌｙ－Ｄ－Ｎ－ＭｅＰｈｅ－Ｌｅｕ－Ｄ－Ａｒｇ－Ｇｌｕ－Ｄ－Ｇｌｎ－Ｄ－Ｔｒｐ－Ｉｌｅ－Ｔｈｒ)【効果】本発明の抗結核菌剤は、多剤耐性結核菌や超多剤耐性結核菌にも効果がある。【選択図】なし
