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Title:
METHOD FOR PREPARARING HETEROCYCLIC COMPOUND AND SALTS THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/056553
Kind Code:
A1
Abstract:
The invention belongs to the field of organic chemistry, and particularly relates to a method for preparing a heterocyclic compound represented by formula I and salts thereof. Compared with the prior art, the invention avoids the use of cyanide, which is a highly toxic substance, and leaves no residual cyano group ion in reaction products and reaction waste, thereby greatly reducing the environmental burden. Moreover, the raw materials of the reaction in the invention have a low cost, a simple preparation method, a high yield, and are suitable for mass production. In addition, the inventors unexpectedly discovered that by using the method of Scheme 4, such as using a reducing agent and reacting under acidic conditions, the compound VIII can be reacted in one step and achieve deprotection, alkylation, and cyano group ion reduction simultaneously to obtain a target product. The disadvantages of the prior art that require multi-step reactions are thus greatly reduced.

Inventors:
CAI YAN (CN)
YANG SHAOQIANG (CN)
WU JIAPENG (CN)
LI HUAIXIN (CN)
ZHOU GUANG (CN)
XU BENQUAN (CN)
Application Number:
PCT/CN2018/105997
Publication Date:
March 26, 2020
Filing Date:
September 17, 2018
Export Citation:
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Assignee:
BTC PHARMACEUTICAL CO LTD (CN)
UNIV NANKAI (CN)
International Classes:
C07D309/08; C07D205/04; C07D307/04
Domestic Patent References:
WO2015095258A12015-06-25
WO2011051282A12011-05-05
WO2018005678A12018-01-04
WO2017115329A12017-07-06
WO2013052394A12013-04-11
Foreign References:
CN103958477A2014-07-30
CN105992765A2016-10-05
US5646167A1997-07-08
US3655692A1972-04-11
CN104245671A2014-12-24
CN102803235A2012-11-28
Other References:
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SUMMA, V. ET AL.: "Discovery of Raltegravir, a Potent, Selective Orally Bioavailable HIV- Integrase Inhibitor for the Treatment of HIV-AIDS Infection", JOURNAL OF MEDICINAL CHEMISTRY, vol. 51, no. 18, 9 March 2008 (2008-03-09), pages 5843 - 5855, XP002615638
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Attorney, Agent or Firm:
BEIJING ORIGINTELLIGENCE IP LAW FIRM (CN)
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