PROBLEM TO BE SOLVED: To provide a drug for treating spinal muscular atrophy.SOLUTION: The invention provides 7-disubstituted-phenyl tetracycline compounds of formula I in the figure.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】脊髄性筋萎縮症治療薬の提供。【解決手段】下式Iの7-二置換フェニルテトラサイクリン化合物。【選択図】なし