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EP 1 009 748 A1

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(43) Date of publication: 21.06.2000 Bulletin 2000/25 (21) Application number: 99929924.1 (22) Date of filing: 30.06.1999

(51) International Patent Classification (IPC)7: C07D 471/04, A61K 31/47 (86) International application number: PCT/KR9900/346 (87) International publication number: WO 0001/696 (13.01.2000 Gazette 2000/02)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 02.07.1998 KR 9826506 (71) Applicant: Korea Research Institute of Chemical Technology 305-343 Taejon-shi (KR)

(72) Inventors: CHOI, Joong-Kwon Yusong-ku,305-340 Taejon-si (KR) YUM, Eul, Kgun 302-181 Taejon-si (KR) KIM, Sung Soo Yusong-ku,305-345 Taejon-si (KR) KANG, Seung Kyu Suh-ku,302-280 Taejon-si (KR) CHEON, Hyae Gyeong Yusong-ku,305-340 Taejon-si (KR) KIM, Hyo, Jung 302-161 Taejon-si (KR) (74) Representative: Hall, Marina  Elkington and FifeProspect House,8 Pembroke Road Sevenoaks,Kent TN13 1XR Sevenoaks,Kent TN13 1XR (GB)