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EP 4 577 535 A1

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(43) Date of publication: 02.07.2025 Bulletin 2025/27 (21) Application number: 23856487.6 (22) Date of filing: 10.08.2023

(51) International Patent Classification (IPC):  C07D 401/14(2006.01) A61K 31/506(2006.01) C07D 413/14(2006.01) A61P 35/00(2006.01) (52) Cooperative Patent Classification (CPC): C07D 413/14; A61P 35/00; C07D 403/14; C07D 405/14 (86) International application number: PCT/CN2023/112361 (87) International publication number: WO 2024/041397 (29.02.2024 Gazette 2024/09)

(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: KH MA MD TN (30) Priority: 22.08.2022 WO PCT/CN2022/113873 (71) Applicant: Hangzhou Highlightll Pharmaceutical Co., Ltd. Hangzhou, Zhejiang 310018 (CN)	(72) Inventors: LIANG, Congxin Hangzhou, Zhejiang 310012 (CN) LI, Shuangjiang Hangzhou, Zhejiang 310018 (CN) TANG, Xiaojing Hangzhou, Zhejiang 310023 (CN) HUANG, Junmin Linden (US) (74) Representative: Dehns  10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)