Title:
METHOD FOR PREPARING POLYETHYLENE GLYCOL DIALDEHYDE DERIVATIVE
Document Type and Number:
WIPO Patent Application WO/2017/146443
Kind Code:
A1
Abstract:
The present invention relates to an improved method for preparing a high-purity polyethylene glycol dialdehyde derivative. The preparation method uses, as an intermediate, a PEG-diacetal prepared by reacting polyethylene glycol methanesulfonate and a dialkoxy-1-propanol, thereby having an advantage of enabling the provision of a polyethylene glycol dialdehyde derivative having high purity and end-activity so as to be suitable as a material for medicines.
Inventors:
KIM YU RIM (KR)
PARK EUN RANG (KR)
KWON BO SUNG (KR)
CHO YOUNG BUM (KR)
CHU JUN HO (KR)
PARK EUN RANG (KR)
KWON BO SUNG (KR)
CHO YOUNG BUM (KR)
CHU JUN HO (KR)
Application Number:
PCT/KR2017/001906
Publication Date:
August 31, 2017
Filing Date:
February 21, 2017
Export Citation:
Assignee:
HANMI FINE CHEMICAL CO LTD (KR)
International Classes:
C08G65/332; A61K31/11; C08G65/48
Foreign References:
| US20120077988A1 | 2012-03-29 | |||
| KR100967833B1 | 2010-07-05 | |||
| US5252714A | 1993-10-12 | |||
| US20070167606A1 | 2007-07-19 | |||
| US6465694B1 | 2002-10-15 |
Other References:
See also references of EP 3421521A4
Attorney, Agent or Firm:
KIM, Sung Ho et al. (KR)
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