| abstract |
The present invention relates to compound shown in the formula (I) or the acceptable salt of its pharmacology, with and as the application of medicine, wherein Rn 1 Expression Cn 1-3 Alkyl, Rn 2 Expression hydrogen atom or Cn 1-3 Alkyl, Ar are represented the phenyl that can be replaced by 1 to 3 substituting group etc., and X represents Sauerstoffatom etc., and n and m are identical or different and be 0 to 2 integer. |