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EP 4 798 562 A1

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(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24881926.0 (22) Date of filing: 25.10.2024

(51) International Patent Classification (IPC):  C07C 15/16(2006.01) C07D 307/04(2006.01) C07C 25/18(2006.01) C07D 333/54(2006.01) (52) Cooperative Patent Classification (CPC): C07D 333/54; C07D 307/20; C07C 41/30   C-Sets: C07C 41/30, C07C 43/225; (86) International application number: PCT/IN2024/052131 (87) International publication number: WO 2025/088634 (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 IN 202311073665 (71) Applicant: Council of Scientific and Industrial Research New Delhi 110001 (IN)

(72) Inventors: SUDHAKAR, Gangarajula Hyderabad Telangana 500007 (IN) RAMU, Chennam Hyderabad Telangana 500007 (IN) GHOSH, Subhash Hyderabad Telangana 500007 (IN) REDDY, Chada Raji Hyderabad Telangana 500007 (IN) THENKRISHNAN, Kumaraguru Hyderabad Telangana 500007 (IN) SHIVAKRISHNA, Avula Hyderabad Telangana 500007 (IN) (74) Representative: Reddie & Grose LLP  The White Chapel Building 10 Whitechapel High Street London E1 8QS London E1 8QS (GB)