(19)

(11)

EP 4 816 346 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24817255.3 (22) Date of filing: 28.11.2024

(51) International Patent Classification (IPC):  C07C 49/557(2006.01) C07C 69/753(2006.01) C07C 49/794(2006.01) C07C 69/76(2006.01) (52) Cooperative Patent Classification (CPC): C07C 49/557; C07C 2601/16; C07C 49/794; C07C 2601/10; C07C 69/76; C07C 69/753; C07C 2602/42 (86) International application number: PCT/EP2024/083930 (87) International publication number: WO 2025/114444 (05.06.2025 Gazette 2025/23)

(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: 29.11.2023 WO PCT/CN2023/134884 (71) Applicant: Givaudan SA 1214 Vernier (CH)	(72) Inventor: ZHOU, Lijun Shanghai 201203 (CN) (74) Representative: Global Patents  Givaudan SA Grafenaustrasse 7 6300 Zug 6300 Zug (CH)