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EP 4 798 588 A1

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(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24881884.1 (22) Date of filing: 24.10.2024

(51) International Patent Classification (IPC):  C07D 471/04(2006.01) A61K 31/437(2006.01) C07D 209/10(2006.01) C07D 409/06(2006.01) A61K 31/444(2006.01) A61P 35/00(2006.01) C07D 231/56(2006.01) (52) Cooperative Patent Classification (CPC): A61P 35/00; C07D 209/10; C07D 231/56; C07D 409/06; C07D 471/04; C07D 519/00 (86) International application number: PCT/IB2024/060467 (87) International publication number: WO 2025/088534 (01.05.2025 Gazette 2025/18)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 27.10.2023 KR 20230145969 (71) Applicant: Dong-A ST Co., Ltd. Dongdaemun-gu Seoul 02587 (KR)

(72) Inventors: CHOI, Sunho Seoul 06732 (KR) KONG, Younggyu Yongin-si, Gyeonggi-do 17066 (KR) KIM, Yoonjung Suwon-si, Gyeonggi-do 16519 (KR) PARK, Youngjun Yongin-si, Gyeonggi-do 17046 (KR) PARK, Jihyun Yongin-si, Gyeonggi-do 17073 (KR) BAEK, Gyerim Yongin-si, Gyeonggi-do 17081 (KR) SOH, Hyeyeon Yongin-si, Gyeonggi-do 16846 (KR) YOO, Jaewook Yongin-si, Gyeonggi-do 17066 (KR) LEE, Okyoung Hwaseong-si, Gyeonggi-do 18496 (KR) JEONG, Youngmin Seoul 05764 (KR) JUNG, Hyeonseok Yongin-si, Gyeonggi-do 17067 (KR) HAN, Taedong Yongin-si, Gyeonggi-do 17080 (KR) (74) Representative: HGF  HGF Limited 4th Floor, 1 City Square Leeds LS1 2ES Leeds LS1 2ES (GB)