56355-79-4Relevant articles and documents
4-(2-chloroethyl) thiazole-2-carboxylic acid ethyl ester and preparation method and application thereof
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Paragraph 0061-0063, (2021/10/05)
The invention provides 4-(2-chloroethyl) thiazole-2-carboxylic acid ethyl ester and a preparation method and application thereof. The preparation method comprises the steps that 2-(2-aminothiazole-4-yl) ethyl acetate of a compound 1 is dissolved in dichloromethane, and 2-(2-bromothiazole-4-yl) ethyl acetate is obtained through diazotization and halogenation; then, under the condition of a reducing agent, 2-(2-bromothiazole-4-yl) ethane-1-ol is obtained; in a carbon monoxide atmosphere, carbonyl insertion reaction is performed through a proper catalyst to obtain 4-(2-ethoxyl) thiazole-2-carboxylic acid ethyl ester; and finally, thionyl chloride is used for chlorination to obtain 4-(2-chloroethyl) thiazole-2-carboxylic acid ethyl ester. The 4-(2-chloroethyl) thiazole-2-carboxylic acid ethyl ester can be used as an intermediate in synthesis of APJ receptor stimulant compounds. The invention provides a route method for synthesizing the 4-(2-chloroethyl) thiazole-2-carboxylic acid ethyl ester for the first time, the reaction condition is mild after the brominating reagent is optimized in the first step, and the yield is improved.
Oxazolidinone compounds and its use in medicine
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Paragraph 0341; 0343; 0344, (2017/08/10)
The invention relates to an oxazolidinone compound and an application thereof to preparation of drugs for preventing and treating thromboembolic diseases and in particular relates to a compound shown in a general formula (I) in the specification or stereoisomers, geometrical isomers, tautomers, nitrogen oxides, hydrates, solvates, metabolites and pharmaceutically acceptable salts or prodrugs of the compound. All the variables are defined in the specification. The invention also relates to an application of the compound shown in the general formula (I) or the stereoisomers, geometrical isomers, tautomers, nitrogen oxides, hydrates, solvates, metabolites and pharmaceutically acceptable salts or prodrugs of the compound as drugs and in particular relates to an application of the substances as drugs for preventing and treating thromboembolic diseases.
PYRROLE CARBOXYLIC ACID DERIVATIVES AS ANTIBACTERIAL AGENTS
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Page/Page column 67, (2010/04/03)
The present invention provides DNA Gyrase and/or Topo IV inhibitors of formula I, which can be used as antibacterial agents. Compounds disclosed herein can be used for treating or preventing conditions caused by or contributed by gram positive, gram negative and anaerobic bacteria, more particularly against, for example, Staphylococci, Streptococci, Enterococci, Haemophilus, Pseudomonus spp., Acenetobacter spp., Muraxalla spp., Chlamydia spp., Mycoplasma spp., Legionella spp., Mycobacterium spp., Helicobacter, Clostridium spp., Bacteroides spp., Cotyne bacterium, Bacillus spp., Enterobactericeae (E.coli, Klebsiella spp., Proteus spp.,etc.) or any combination thereof Also provided, are processes for preparing compounds disclosed herein, pharmaceutical compositions containing compounds disclosed herein, and methods of treating bacterial infections