A COMPOUND REPRESENTED BY THE FORMULA (I) WHERE IN R1 IS A HYDROGEN ATOM, A HALOGEN ATOM, A GROUP VIA A CARBON ATOM,A GROUP VIA A NITROGEN ATOM, A GROUP VIA AN OXYGEN ATOM OR A GROUP VIA A SULFUR ATOM；R2 IS A HYDROGEN ATOM, A HALOGEN ATOM, A GROUP VIA A CARBON ATOM, A GROUP VIA A NITROGEN ATOM, A GROUP VIA AN OXYGEN ATOM OR A GROUP VIA A SULFUR ATOM；R3 IS AN ELECTRON-WITHDRAWING GROUP； R4 IS A HYDROGEN ATOM, A HALOGEN ATOM, A GROUP VIA A CARBON ATOM, A GROUP VIA A NITROGEN ATOM, A GROUP VIA AN OXYGEN ATOM OR A GROUP VIA A SULFUR ATOM；R5 IS A HYDROGEN ATOM, A HALOGEN ATOM, A GROUP VIA A CARBON ATOM,A GROUP VIA A NITROGEN ATOM, A GROUP VIA AN OXYGEN ATOM OR A GROUP VIA A SULFUR ATOM；R6 IS A HYDROGEN ATOM, A HALOGEN ATOM, A GROUP VIA A CARBON ATOM,A GROUP VIA A NITROGEN ATOM, A GROUP VIA AN OXYGEN ATOM OR A GROUP VIA A SULFUR ATOM；R7 IS AN ALKYL GROUP OPTIONALLY HAVING SUBSTITUENT(S) OR AN ARALKYL GROUP OPTIONALLY HAVING SUBSTITUENT (S)；R8 IS A HYDROGEN ATOM, AN ALKYL GROUP OPTIONALLY HAVING SUBSTITUENT (S), AN ALKENYL GROUP OPTIONALLY HAVING SUBSTITUENT(S) OR A CYCLOALKYL GROUP OPTIONALLY HAVING SUBSTITUENTS (S)；R9 IS A GROUP VIA AN OXYGEN ATOM； AND RING A IS A 5- OR 6-MEMBERED RING OPTIONALLY FURTHER HAVING SUBSTITUENT(S) (IN THIS CASE, RING A MAY BE A 5- OR 6-MEMBERED RING FORMING A SPIRO BOND WITH C3-6 CYCLOALKANE), OR A SALT THEREOF HAS A SUPERIOR ANDROGEN RECEPTOR MODULATING ACTION.
