[1] OSAKA CITY UNIV,SCH MED,CHEM LAB,ABENO KU,OSAKA 545,JAPAN
[2] CHIBA UNIV,FAC PHARMACEUT SCI,DEPT BIOPHARMACEUT,CHIBA,JAPAN
[3] OSAKA CITY UNIV,SCH MED,DEPT ANESTHESIOL & INTENS CARE MED ABENO KU,OSAKA 545,JAPAN
[4] OSAKA CITY UNIV,SCH MED,CHEM LAB,OSAKA 545,JAPAN