(19)
(11) EP 1 368 338 A1

(12)

(43) Date of publication:
10.12.2003 Bulletin 2003/50

(21) Application number: 02700866.3

(22) Date of filing: 20.02.2002
(51) International Patent Classification (IPC)7C07D 401/12, A61K 31/44
(86) International application number:
PCT/KR0200/261
(87) International publication number:
WO 0207/4766 (26.09.2002 Gazette 2002/39)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

(30) Priority: 21.02.2001 KR 2001008677

(71) Applicants:
  • Chemtech Research Incorporation
    Whasung-gun,Kyungi-do 445-743 (KR)
  • Hansol Chemience Co., Ltd.
    Seoul 135-030 (KR)

(72) Inventors:
  • KIM, Wan, Joo
    Songpa-gu,Seoul 138-050 (KR)
  • KIM, Kyoung, Soo
    Paldal-gu, Suwon,Kyunggi-do 442-470 (KR)
  • KIM, Myung, Hwa
    Gusung-myun, Yongin,Kyunggi-do 449-910 (KR)
  • BAEK, Yong, Gu
    Suwon,Kyunggi-do 442-710 (KR)
  • PARK, Jong, Yek
    Suwon,Kyunggi-do 440-240 (KR)
  • JANG, Jung, Min
    Mapo-gu,Seoul 121-220 (KR)
  • CHOI, Jae, Won
    Eunpyung-gu,Seoul 122-090 (KR)
  • YOO, Yong, Sang
    Seongnam-si,Gyeonggi-do, 463-797 (KR)

(74) Representative: Samuels, Lucy Alice 
Gill Jennings & EveryBroadgate House7 Eldon Street
London EC2M 7LH
London EC2M 7LH (GB)

   


(54) METHOD OF PREPARING LANSOPRAZOLE AND ITS INTERMEDIATE