(19)
(11) EP 4 181 946 A1

(12)

(43) Date of publication:
24.05.2023 Bulletin 2023/21

(21) Application number: 21846746.2

(22) Date of filing: 16.07.2021
(51) International Patent Classification (IPC): 
A61K 38/26(2006.01)
C07K 14/605(2006.01)
(52) Cooperative Patent Classification (CPC):
C07K 14/605; A61K 38/00
(86) International application number:
PCT/IN2021/050691
(87) International publication number:
WO 2022/018748 (27.01.2022 Gazette 2022/04)
(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 MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 18.07.2020 IN 202041030673
11.03.2021 IN 202141010313

(71) Applicant: Dr. Reddy's Laboratories Ltd.
Hyderabad, Telangana 500034 (IN)

(72) Inventors:
  • DEWAR, Colin Thomas
    Cambridge CB43EL (GB)
  • MCCORMACK, Peter
    Eastham CH620BU (GB)
  • GAFFNEY, Philip
    St Ives PE273EG (GB)
  • RAMASWAMY, Karthik
    Hyderabad 500049 (IN)
  • ELATI, Ravi Ram Chandrashekar
    Hyderabad - 500072, State-Telangana, India Hyderabad 500072 (IN)
  • KOMARAVOLU, Yagna Kiran Kumar
    Hyderabad, 500049 (IN)
  • BHUPATHIRAJU, Ramesh
    Kota Hyderabad 500049 (IN)

(74) Representative: Müller-Boré & Partner Patentanwälte PartG mbB 
Friedenheimer Brücke 21
80639 München
80639 München (DE)

   


(54) IMPROVED PURIFICATION PROCESS OF SEMAGLUTIDE