(*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days. (21) Appl. No.: 09/959,237 (22) PCT Filed: May 10, 2000 (86) PCT No.: PCT/JP00/03008 S371 (c)(1), (2), (4) Date: Oct. 17, 2001 (87) PCT Pub. No.: WO00/69825 PCT Pub. Date: Nov. 23, 2000 (30) Foreign Application Priority Data May 14, 1999 (JP) ........................................... 11-134533 (51) Int. Cl." .............................................. C07D 213/71 (52) U.S. Cl. ....................................................... 546/303 (58) Field of Search .......................................... 546/303