Title:
NEW CRYSTAL FORMS OF {[5-(3-CHLOROPHENYL)-3-HYDROXYPYRIDINE-2-CARBONYL]AMINO}ACETIC ACID AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/108101
Kind Code:
A1
Abstract:
The present invention relates to new crystal forms of {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl]amino}acetic acid, and a preparation method therefor and uses thereof. A crystal form CS1, a crystal form CS2 and a crystal form CS3 of the {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl]amino}acetic acid prepared in the present invention can be used for preparing pharmaceutical preparations used for treating anemia, and provides a new choice for preparing pharmaceutical preparations containing {[5-(3-chlorophenyl)-3-hydroxypyridine-2-carbonyl]amino}acetic acid, and has very important value for drug development.
Inventors:
CHEN MINHUA (CN)
ZHANG YANFENG (CN)
ZOU PO (CN)
WANG JINQIU (CN)
ZHANG XIAOYU (CN)
ZHANG YANFENG (CN)
ZOU PO (CN)
WANG JINQIU (CN)
ZHANG XIAOYU (CN)
Application Number:
PCT/CN2017/115909
Publication Date:
June 21, 2018
Filing Date:
December 13, 2017
Export Citation:
Assignee:
CRYSTAL PHARMACEUTICAL SUZHOU CO LTD (CN)
International Classes:
A61K31/44; C07D213/65; A61P7/00
Domestic Patent References:
| WO2016153996A1 | 2016-09-29 | |||
| WO2012170377A1 | 2012-12-13 | |||
| WO2015073779A1 | 2015-05-21 |
Foreign References:
| CN105916502A | 2016-08-31 | |||
| CN101506149A | 2009-08-12 |
Other References:
K. KNAPMAN, MODERN DRUG DISCOVERY, vol. 3, 2000, pages 53 - 54,57
See also references of EP 3549932A4
See also references of EP 3549932A4
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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