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Title:
PREPARATION METHOD FOR HETEROCYCLIC COMPOUND, AND INTERMEDIATE OF HETEROCYCLIC COMPOUND
Document Type and Number:
WIPO Patent Application WO/2022/156784
Kind Code:
A1
Abstract:
A preparation method for an imidazopyridine compound as shown in formula IV, and an intermediate thereof as shown in formula I or formula II. The imidazopyridine compound as shown in formula IV can antagonize a P2X3 receptor, and has the effects of suppressing cough and analgesia.

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Inventors:
ZHANG XUEJUN (CN)
LI QUN (CN)
ZANG YANG (CN)
CAI LIBO (CN)
CHANG SHAOHUA (CN)
LI XUEQIANG (CN)
LI LIE (CN)
YANG JUN (CN)
Application Number:
PCT/CN2022/073299
Publication Date:
July 28, 2022
Filing Date:
January 21, 2022
Export Citation:
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Assignee:
WUHAN HUMANWELL INNOVATIVE DRUG RES AND DEVELOPMENT CENTER LIMITED COMPANY (CN)
International Classes:
C07D265/30; C07D471/04
Domestic Patent References:
WO2021161109A12021-08-19
WO2021161105A12021-08-19
WO1997019059A11997-05-29
Foreign References:
CN113549068A2021-10-26
CN111377917A2020-07-07
CN105246888A2016-01-13
Attorney, Agent or Firm:
ZHIFAN & PARTNERS (CN)
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