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EP 4 680 592 A1

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(43) Date of publication: 21.01.2026 Bulletin 2026/04 (21) Application number: 24770170.9 (22) Date of filing: 15.03.2024

(51) International Patent Classification (IPC):  C07C 37/84(2006.01) C07C 39/16(2006.01) C07C 37/68(2006.01) B01J 31/08(2006.01) (52) Cooperative Patent Classification (CPC): B01J 31/08; C07C 37/84; C07C 37/68; B01J 2231/347   C-Sets: C07C 37/68, C07C 39/16; C07C 37/84, C07C 39/16; (86) International application number: PCT/IN2024/050270 (87) International publication number: WO 2024/189654 (19.09.2024 Gazette 2024/38)

(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: 15.03.2023 IN 202311018071 (71) Applicant: Council of Scientific & Industrial Research New Delhi 110001 (IN)	(72) Inventors: KAMBLE, Sanjay Pandurang Maharashtra Pune 411008 (IN) BHONGALE, Sunil Sitaram Maharashtra Pune 411008 (IN) DHOTRE, Kapil Dnyaneshwar Maharashtra Pune 411008 (IN) BODAWAR, Narendra Balwant Maharashtra Pune 411008 (IN) (74) Representative: Frei Patent Attorneys  Frei Patentanwaltsbüro AG Hagenholzstrasse 85 8050 Zürich 8050 Zürich (CH)