(19)
(11) EP 4 476 218 A1

(12)

(43) Date of publication:
18.12.2024 Bulletin 2024/51

(21) Application number: 22854433.4

(22) Date of filing: 23.12.2022
(51) International Patent Classification (IPC): 
C07D 471/04(2006.01)
(52) Cooperative Patent Classification (CPC):
C07D 471/04
(86) International application number:
PCT/US2022/053916
(87) International publication number:
WO 2023/122322 (29.06.2023 Gazette 2023/26)
(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: 24.12.2021 IN 202111060692

(71) Applicant: Assia Chemical Industries Ltd.
Tel Aviv 6944020 (IL)

(72) Inventors:
  • LUTHRA, Parven Kumar
    Noida, Uttar Pradesh 201304 (IN)
  • SINHA, Chandrasekhar
    Mumbai, Maharashtra 400614 (IN)
  • AROTE, Nitin Dnyaneshwar
    Mumbai, Maharashtra 410209 (IN)
  • PANDEY, Anand Kumar
    Uttar Pradesh 230128 (IN)
  • TYAGI, Bhupendra Prakash
    Noida, Uttar Pradesh 201306 (IN)
  • SONAR, Jitendra Kamalakar
    Maharashtra 425409 (IN)
  • JAISWAL, Sanjay
    Noida, Uttar Pradesh 201310 (IN)
  • MISTRY, Maulik Dipakbhai
    Ahmedabad, Gujarat 380024 (IN)

(74) Representative: D Young & Co LLP 
3 Noble Street
London EC2V 7BQ
London EC2V 7BQ (GB)

   


(54) IMPROVED PROCESSES FOR THE PREPARATION OF RIPRETINIB