CN116606280A - Fluoroquinolone compound and application thereof in preparation of antibacterial drugs - Google Patents

Fluoroquinolone compound and application thereof in preparation of antibacterial drugs Download PDF

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CN116606280A
CN116606280A CN202310235376.XA CN202310235376A CN116606280A CN 116606280 A CN116606280 A CN 116606280A CN 202310235376 A CN202310235376 A CN 202310235376A CN 116606280 A CN116606280 A CN 116606280A
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chloro
cyclopropyl
dihydro
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叶金星
孙茂林
程瑞华
李涛
梁超茗
邵日新
王亚国
陈华亮
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Guangdong University of Technology
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    • C07D401/00Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
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    • A61P31/00Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
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Abstract

The invention relates to a fluoroquinolone compound and application thereof in preparation of antibacterial drugs, belongs to the technical field of medicines, and relates to a fluoroquinolone compound with good antibacterial activity, and the prepared fluoroquinolone compound has good results in antibacterial activity test and good application prospect.

Description

Fluoroquinolone compound and application thereof in preparation of antibacterial drugs
Technical Field
The invention belongs to the technical field of medicines, and relates to a fluoroquinolone compound and application thereof.
Background
ESKAPE (escherichia coli, staphylococcus aureus, klebsiella pneumoniae, acinetobacter baumannii, pseudomonas aeruginosa, and enterobacter) pathogens can cause serious and fatal infections, such as blood infections and pneumonia. The ESKAPE pathogen has the potential to "escape" antibiotics and become increasingly resistant to all available antibiotics (clin.microbiol.rev., 2020,33, e 00181-19.). Currently, over 700 tens of thousands of people die annually from drug resistant ESKAPE pathogens, and if there is no new and better therapeutic strategy, 10 tens of thousands of people are expected to die in 2050. The increasing threat of the global pandemic and drug-resistant forms of drug-sensitive ESKAPE pathogens has created an urgent need to develop more potent antibacterial chemotherapeutic agents. Quinolones, one of the most commonly used antibiotics in the clinic, are effective weapons for treating ESKAPE infection (eur.j. Med. Chem.,2021,224,113741.). Unfortunately, ESKAPE pathogens have developed severe resistance to quinolones, which are mainly associated with mutations in the quinolone drug resistance determining region (QRDR) of type ii topoisomerase (Antibiotics, 2021,10,1455.). Therefore, there is a need to develop new quinolones to increase the efficacy of drug sensitive and resistant ESKAPE pathogens.
Structural analysis of quinolones is expected to provide some new sense of design and synthesis. Analyzing the structure of quinolone medicines, the new generation of anti-drug-resistant quinolone medicines are to introduce new structural modules at a plurality of positions of the quinolone parent nucleus structure or recombine different structural modules to enhance the antibacterial activity and drug resistance. For example, in the second-generation quinolone medicines, the N-1-position ethyl is replaced by cyclopropyl on the basis of norfloxacin to obtain ciprofloxacin, so that the antibacterial activity is enhanced; the third generation quinolone medicine is mainly characterized in that piperazine at the C-7 position is replaced by methyl substituted piperazine and pyrrolidinyl, and the N-1 position is expanded to an aromatic group with large molecular surface area; the fourth generation and the newly marketed quinolone drugs enrich the variety of C-7 substituent groups, an azabicyclo group and a huge side chain are added on pyrrolidinyl, more groups are introduced at C-5 and C-8 positions, and the substituted pyridine structure appears at N-1 position for the first time. For quinolone antibiotics, the most modified sites are N-1, C-7 and C-8, so that a solid compound library with various structures and sufficient quantity is constructed by recombining different structural modules (such as gatifloxacin and clinafloxacin) or introducing brand-new structural modules (such as moxifloxacin and delafloxacin), and then active molecules or anti-drug resistant molecules are searched by active screening, and the method provides a great opportunity for the discovery of new generation anti-drug resistant quinolone drugs.
Under the guidance of the thought, a huge number of quinolone compound libraries are synthesized and screened, so that a part of novel compounds with better activity are discovered. We consider this a new strategy for discovering the structure of novel anti-drug-resistant compounds.
Disclosure of Invention
In view of the above problems, the present invention provides a fluoroquinolone compound, a salt or hydrate thereof, or a pharmaceutically acceptable carrier, a pharmaceutical composition comprising the same, and an application of the same in preparing antibacterial drugs. The fluoroquinolone compound with good antibacterial activity is designed and synthesized, and the prepared compound shows good results in antibacterial activity test.
In order to achieve the above purpose, the invention adopts the following specific scheme:
in a first aspect, a fluoroquinolone compound and a salt or hydrate thereof or a pharmaceutically acceptable carrier thereof, wherein the fluoroquinolone compound is a compound shown in the following structural general formula (I):
in formula (I), R is selected from the group consisting of substituted azacycloalkanes and amino-substituted pyrrolidines attached to the fluoroquinolone core structure via an N-C bond.
Further, the fluoroquinolone compound has a structure represented by general formula (I-1) or (I-2):
wherein n is a natural number of 1-5, R 1 Nitrogen atom substituted nitrogen-containing and nitrogen-containing heterocycloalkanes.
Still further, the fluoroquinolone compound is selected from the group consisting of:
compound 1: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3-hydroxycyclobutyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 2: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-hydroxypyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 3: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-hydroxypyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 4: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-hydroxypiperidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 5: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-hydroxypiperidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 6: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3-hydroxycycloheptane) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 7: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3- (diethylamino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 8: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3- (diethylamino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 9: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3- (pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 10: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3- (pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 11: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-piperidinoalkyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 12: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-piperidinoalkyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 13: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (morpholinyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 14: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (thiomorpholinyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 15: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (thiomorpholine-1, 1-dioxido) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 16: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (piperazinyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 17: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (N-methylpiperazino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
in a second aspect, a pharmaceutical composition comprises the fluoroquinolone compound and salts or hydrates thereof or a pharmaceutically acceptable carrier.
In a third aspect, the fluoroquinolone compound and its salt, hydrate or pharmaceutically acceptable carrier, or the application of the pharmaceutical composition in preparing antibacterial medicines.
Further, the antibacterial is antibacterial or/and fungal.
Still further, the bacteria is any one or more of staphylococcus aureus, methicillin-resistant staphylococcus aureus, klebsiella pneumoniae (high tolerance), salmonella (high tolerance), micrococcus luteus, enterococcus faecalis (high tolerance), bacillus subtilis, escherichia coli, pseudomonas aeruginosa (high tolerance), enterobacter cloacae and proteus; the fungus is candida albicans and/or candida.
The beneficial effects are that: the quinolone compound has wide bactericidal spectrum and very good inhibition or bactericidal activity on bacteria such as gram-negative bacteria, gram-positive bacteria and the like or high-resistance bacteria; the compounds can obtain good control effect at very low dosage. In addition, the preparation method of the compound disclosed by the invention is simple in preparation steps and higher in yield, so that the compound has a better application prospect.
Detailed Description
The fluoroquinolone compound can be synthesized according to the following reaction route:
the route is that 3-chloro-2, 4, 5-trifluoro benzoyl chloride and N, N-dimethylamino ethyl acrylate undergo addition coupling reaction, then undergo substitution reaction with various substituted 2-aminopyridine, then undergo cyclization through intramolecular nucleophilic substitution, then hydrolyze to obtain compound V, and finally undergo aromatic nucleophilic substitution reaction with various secondary amines to obtain the target product fluoroquinolone compound.
The technical scheme of the invention will be clearly and completely described in the following in connection with the embodiments of the invention.
Example 1: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3-hydroxycyclobutyl) -4-oxo-3-quinolinecarboxylic acid (compound 1):
a) N, N-dimethylaminoethyl acrylate (3.1 g,24.0 mmol), triethylamine (2.6 g,26.2 mmol) and toluene (40 mL) were mixed, a mixed solution of 3-chloro-2, 4, 5-trifluorobenzoyl chloride (5 g,21.8 mmol) and toluene (20 mL) was added dropwise, the mixture was heated to 50℃and TLC was monitored for about 1 hour, after completion of the reaction, the mixture was concentrated to give 7.3g of Compound II in 99% yield. LC/MS [ M+H ]] + =336.05、[M+Na] + =358.08、[M+K] + =374.04。
b) Compound II (7 g,20.8 mmol), ethanol (70 mL), glacial acetic acid (3 mL) are mixed, cyclopropylamine (1.3 g,22.8 mmol) ethanol solution is added dropwise at room temperature, the mixture is heated to 40 ℃ after the dripping, TLC monitoring reaction is finished, cooling is carried out, a proper amount of water is slowly added into the reaction solution, stirring and filtering are carried out, and the compound III is obtained after drying, wherein the yield is 94%. LC/MS [ M+H ]] + =348.05、[M+Na] + =370.06、[M+K] + =386.05。
c) Compound III (6.8 g,19.6 mmol), anhydrous potassium carbonate (4.1 g,29.6 mmol) and N, N-dimethylformamide (50 mL) were mixed, heated to 90℃and stirred for 2 hours, after the TLC monitoring reaction was completed, cooled, and a proper amount of water was slowly added to the reaction solution, stirred and filtered, and dried to give compound IV 6.2g in 96% yield. LC/MS [ M+H ]] + =328.04、[M+Na] + =350.06、[M+K] + =366.04。
d) Compound IV (6.2 g,18.9 mmol), acetic acid (20 mL), 6M HCl (4 mL) are mixed, heated to 90-95 ℃ for reflux reaction for 4 hours, after TLC monitoring reaction is finished, cooled, a proper amount of water is slowly added into the reaction solution, stirred and filtered, a filter cake is washed to be neutral, and then compound V5.3 g is obtained after drying, and the yield is 94%. LC/MS [ M+H ]] + =300.01、[M+Na] + =322.03、[M+K] + =338.04。
e) Compound V (1.7 g,5.0 mmol) was added to a suspension of 3-hydroxyazetidine hydrochloride (0.8 g,7.5 mmol), triethylamine (1.5 g,15.0 mmol) and the mixture was then refluxed until no starting material was present as detected by TLC (typically 5-8 hours). The solution was cooled to room temperature and filtered, and the filter cake was washed with water and diethyl ether to give the crude product. Purification by recrystallisation (DMF/EtOH) then gave the desired product 1.0g in 58% yield. LC/MS [ M+H ]] + =353.06、[M+Na] + =375.05、[M+K] + =391.06。
Example 2: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-hydroxypyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 2):
compound 2 was produced in the same manner as in example 1 except that the corresponding starting materials were used, yield was 63%. LC/MS [ M+H ]] + =367.08、[M+Na] + =389.08、[M+K] + =405.09。
Example 3: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-hydroxypyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 3):
compound 3 was produced in the same manner as in example 1 except that the corresponding raw materials were used, yield 61%. LC/MS [ M+H ]] + =367.10、[M+Na] + =389.08、[M+K] + =405.12。
Example 4: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-hydroxypiperidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 4):
compound 4 was produced in 58% yield by the same method as in example 1, except that the corresponding starting materials were used. LC/MS [ M+H ]] + =381.11、[M+Na] + =403.10、[M+K] + =409.11。
Example 5: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-hydroxypiperidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 5):
compound 5 was produced in the same manner as in example 1 except that the corresponding starting materials were used, yield 61%. LC/MS [ M+H ]] + =381.10、[M+Na] + =403.08、[M+K] + =409.11。
Example 6: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3-hydroxycycloheptane) -4-oxo-3-quinolinecarboxylic acid (compound 6):
compound 6 was produced in the same manner as in example 1 except that the corresponding starting materials were used, yield was 49%. LC/MS [ M+H ]] + =395.11、[M+Na] + =417.13、[M+K] + =433.11。
Example 7: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3- (diethylamino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 7):
compound 7 was produced in the same manner as in example 1 except that the corresponding starting materials were used, yield 56%. LC/MS [ M+H ]] + =422.09、[M+Na] + =444.15、[M+K] + =460.09。
Example 8: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3- (diethylamino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 8):
compound 8 was produced in 58% yield by the same method as in example 1, except that the corresponding starting materials were used. LC/MS [ M+H ]] + =422.09、[M+Na] + =444.10、[M+K] + =460.12。
Example 9: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3- (pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 9):
compound 9 was produced in the same manner as in example 1 except that the corresponding starting materials were used, yield was 49%. LC/MS [ M+H ]] + =420.14、[M+Na] + =442.10、[M+K] + =458.15。
Example 10: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3- (pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 10):
compound 10 was produced in the same manner as in example 1 except that the corresponding starting materials were used, with a yield of 50%. LC/MS [ M+H ]] + =420.10、[M+Na] + =442.15、[M+K] + =458.09。
Example 11: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-piperidinoalkyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 11):
compound 11 was produced in the same manner as in example 1 except that the corresponding starting materials were used, in a yield of 60%. LC/MS [ M+H ]] + =434.15、[M+Na] + =456.12、[M+K] + =472.10。
Example 12: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-piperidinoalkyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 12):
compound 12 was produced in the same manner as in example 1 except that the corresponding starting materials were used, in a yield of 60%. LC/MS [ M+H ]] + =434.14、[M+Na] + =456.12、[M+K] + =472.11。
Example 13: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (morpholino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (Compound 13):
compound 13 was prepared in 57% yield by the same method as in example 1, except that the corresponding starting materials were used. LC/MS [ M+H ]] + =436.14、[M+Na] + =458.13、[M+K] + =474.11。
Example 14: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (thiomorpholinyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (Compound 14):
compound 14 was produced in the same manner as in example 1 except that the corresponding starting materials were used, with a yield of 53%. LC/MS [ M+H ]] + =452.11、[M+Na] + =474.09、[M+K] + =490.08。
Example 15: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (thiomorpholine-1, 1-dioxido) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (Compound 15):
compound 15 was produced in the same manner as in example 1 except that the corresponding starting materials were used, yield 61%. LC/MS [ M+H ]] + =484.10、[M+Na] + =506.08、[M+K] + =523.13。
Example 16: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (piperazinyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 16):
compound 16 was produced in the same manner as in example 1 except that the corresponding starting materials were used, yield 46%. LC/MS [ M+H ]] + =435.15、[M+Na] + =457.09、[M+K] + =473.10。
Example 17: preparation of 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (N-methylpiperazino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid (compound 17):
compound 17 was produced in the same manner as in example 1 except that the corresponding raw materials were used, and the yield was 52%. LC/MS [ M+H ]] + =449.11、[M+Na] + =471.15、[M+K] + =487.17。
Example 18: antibacterial Activity test of the Compounds of the invention
To confirm the practicality of the synthesized compounds, the Minimum Inhibitory Concentration (MIC) of the target compound was determined by a micro broth dilution method, and the plates were incubated at 35℃for 18 to 24 hours. Specific antibacterial activity test specific results are shown in table 1.
Table 1 in vitro antibacterial activity of the compounds of the present invention.
Experimental results show that the compound contained in the invention generally has stronger drug-resistant bacteria activity.
It should be noted that the above-mentioned embodiments are to be understood as illustrative, and not limiting, the scope of the invention, which is defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made to the present invention without departing from its spirit or scope.

Claims (7)

1. A fluoroquinolone compound and a salt or hydrate thereof or a pharmaceutically acceptable carrier thereof, wherein the fluoroquinolone compound is a compound shown as the following structural general formula (I):
in formula (I), R is selected from the group consisting of substituted azacycloalkanes and amino-substituted pyrrolidines attached to the fluoroquinolone core structure via an N-C bond.
2. The fluoroquinolone compound and its salt or hydrate or pharmaceutically acceptable carrier according to claim 1, wherein the fluoroquinolone compound has a structure represented by general formula (I-1) or (I-2):
wherein n is a natural number of 1-5, R 1 Nitrogen atom substituted nitrogen-containing and nitrogen-containing heterocycloalkanes.
3. The fluoroquinolone compound and salts or hydrates thereof, or pharmaceutically acceptable carriers thereof, as claimed in claim 2, wherein the fluoroquinolone compound is selected from the group consisting of:
compound 1: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3-hydroxycyclobutyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 2: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-hydroxypyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 3: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-hydroxypyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 4: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-hydroxypiperidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 5: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-hydroxypiperidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 6: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3-hydroxycycloheptane) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 7: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3- (diethylamino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 8: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3- (diethylamino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 9: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3- (pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 10: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3- (pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 11: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3S) -3-piperidinoalkyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 12: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- ((3R) -3-piperidinoalkyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 13: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (morpholinyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 14: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (thiomorpholinyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 15: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (thiomorpholine-1, 1-dioxido) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 16: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (piperazinyl) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
compound 17: 1-cyclopropyl-8-chloro-6-fluoro-1, 4-dihydro-7- (3- (N-methylpiperazino) pyrrolidinyl) -4-oxo-3-quinolinecarboxylic acid having the formula:
4. a pharmaceutical composition comprising the fluoroquinolone compound of any one of claims 1-3 and salts or hydrates thereof, or a pharmaceutically acceptable carrier.
5. Use of a fluoroquinolone compound and salts or hydrates thereof or a pharmaceutically acceptable carrier according to any one of claims 1 to 3, or a pharmaceutical composition according to claim 4, in the preparation of an antibacterial medicament.
6. The use according to claim 5, wherein the antibacterial is antibacterial or/and fungal.
7. The use according to claim 6, wherein the bacteria are any one or more of staphylococcus aureus, methicillin-resistant staphylococcus aureus, klebsiella pneumoniae, salmonella, micrococcus luteus, enterococcus faecalis, bacillus subtilis, escherichia coli, pseudomonas aeruginosa, enterobacter cloacae and proteus; the fungus is candida albicans and/or candida.
CN202310235376.XA 2023-03-13 2023-03-13 Fluoroquinolone compound and application thereof in preparation of antibacterial drugs Pending CN116606280A (en)

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