CN104072435A - Alkyl disubstituted tetrazole acetophenone compound and preparation method and use thereof - Google Patents

Alkyl disubstituted tetrazole acetophenone compound and preparation method and use thereof Download PDF

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Publication number
CN104072435A
CN104072435A CN201410352064.8A CN201410352064A CN104072435A CN 104072435 A CN104072435 A CN 104072435A CN 201410352064 A CN201410352064 A CN 201410352064A CN 104072435 A CN104072435 A CN 104072435A
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compound
preparation
par
formula
agonist
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CN104072435B (en
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张远强
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Fan Xinmei
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D257/00Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
    • C07D257/02Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
    • C07D257/04Five-membered rings

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Abstract

The invention relates to the field of medicines related to thrombotic diseases, in particular to an alkyl disubstituted PAR-1 (Protease Activated Acceptor-1) agonist containing a tetrazole acetophenone structure, a preparation method thereof, a medicine composition containing the PAR-1 agonist and application of the PAR-1 agonist to preparation of medicines for treating thrombotic diseases. The formula (I) and the definition of R group are shown in the specification.

Description

Dialkyl substituted tetrazole acetophenone compound and application
Technical Field
The invention relates to the field of medicines related to thrombotic diseases. In particular to a dialkyl substituted PAR-1 antagonist containing a tetrazole acetophenone structure and having a therapeutic effect on thrombotic diseases, a preparation method thereof and a pharmaceutical composition containing the same.
Background
The Protease Activated receptor 1 (PAR-1) is a new target of the recently discovered anti-platelet antithrombotic drugs. The protease activated receptor 1 is called thrombin receptor, and after thrombin is activated by the coagulation chain, the thrombin acts on platelets through a PAR-1 receptor to activate the platelets, so that the platelets are aggregated to cause thrombosis and coagulation. The thrombus caused by PAR-1 is rich in platelet components and is the main cause of arterial thrombosis. PAR-1 antagonists block the activation of thrombocytes by thrombin and thus block arterial thrombosis and can be used for the treatment of Acute Coronary artery disease (Acute Coronary Syndrome). Several PAR-1 inhibitors have been in clinical study (Chackalamannil S., Thrombin Receptor (Protease Activated Receptor-1) antitumor as Power antitumor Agents with Strong antitumor Effects,J. Med. Chem., 2006, 49(18), 5389-5403)。
the traditional medicines for preventing and treating thrombotic diseases are divided into three categories. The first class is the anticoagulant class, which is divided into direct thrombin inhibitors and indirect thrombin inhibitors, the drugs inhibit thrombosis by acting on different links of the coagulation linkage, and have the effect of inhibiting various thrombosis, such as vitamin K antagonists, Xa factor inhibitors and the like; the second category is anti-platelet, such as COX-1 inhibitor, ADP receptor antagonist and the like, and the drugs are mainly used for preventing and treating arterial thrombosis; the third type is a fibrinolytic agent, which is mainly used to dissolve fibrin formed in blood.
Most antiplatelet drugs are traditional arterial thrombosis prevention drugs, such as clopidogrel, aspirin and the like. The disadvantage of these drugs is the relatively high risk of bleeding. PAR-1 antagonists, which are newly discovered antiplatelet antithrombotic agents, have smaller bleeding risks, so the compounds can be used as promising drugs for treating arterial thrombosis.
The invention discloses a dialkyl substituted PAR-1 antagonist containing a tetrazole acetophenone structure, which can be used for preparing medicines for resisting arterial thrombosis diseases.
Disclosure of Invention
It is an object of the present invention to provide a compound of formula (I) having good antithrombotic activityIAnd pharmaceutically acceptable salts thereof.
It is another object of the present invention to provide a process for the preparation of a compound of the formulaIAnd pharmaceutically acceptable salts thereof.
It is a further object of the present invention to provide a composition comprisingIThe compound and the pharmaceutically acceptable salt thereof as effective components, and one or more pharmaceutically acceptable carriers, excipients or diluents, and application thereof in treating arterial thrombosis.
The present disclosure will now be described in detail for the purpose of the invention.
The compounds of the present invention having the general formula I have the following structural formula:
( I )
wherein,
wherein,
r1 is selected from F, Cl, Br, I;
r2 is selected from C1-C3 alkyl.
Preferably the following has the general formulaIThe compound of (a) to (b),
further, the following compounds having the general formula (III)IThe compound of (a) to (b),
the general formula of the inventionIThe compound was synthesized by the following steps:
compound (I)IIAnd compoundsIIIIn acids or basesTo obtain a compound (a)I)。
The invention is of the formulaIPharmaceutically acceptable salts of the compounds include, but are not limited to, salts with various inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, hydrobromic acid, and the like, and also salts with various organic acids such as acetic acid, succinic acid, maleic acid, malic acid, and various amino acids, and the like.
The general formula of the inventionIThe compound has PAR-1 antagonistic effect, and can be used as effective component for preparing antithrombotic therapeutic medicine. The general formula of the inventionIThe activity of the compounds was verified by in vitro models.
The general formula of the inventionIThe compounds are effective over a relatively wide dosage range. For example, the daily dosage may be in the range of about 1 mg to 500 mg per person, divided into one or more administrations. Practical administration of the inventionIThe dosage of the compound can be determined by a physician in the light of the relevant circumstances. These include: the physical state of the subject, the route of administration, the age, body weight, individual response to the drug, severity of the symptoms, and the like.
Detailed Description
The present invention will be further described with reference to the following examples. It should be noted that the following examples are only for illustration and are not intended to limit the present invention. Variations of the teachings of the present invention may be made by those skilled in the art without departing from the scope of the claims of the present application.
Example 1
Reaction raw materials: self-made and conventional method.
1.92 g (10 mmol) of CompoundII-13.70 g (10 mmol) of the CompoundIII-1And 4.15 g (30 mmol) of solid potassium carbonate in 20 mL of acetonitrile were stirred overnight, followed by heating and refluxing for 3 hours.
Pouring the reaction mixture into 200 mL of ice water after slightly cooling, stirring, adjusting the pH to = 4 with concentrated hydrochloric acid, extracting with 50 mL of x 3 dichloromethane, combining the organic phases, washing with brine, drying over anhydrous sodium sulfate, evaporating the solvent on a rotary evaporator, and purifying the obtained residue by column chromatography to obtain a pure productI-1The white solid, MS,m/z = 504([M+Na]+)。
examples 2 to 5
According to the procedure of example 1, a compound having the formulaIThe following compounds.
Example 6 in vitro platelet aggregation inhibition assay
Pharmacological testing of the substances was performed in 96-well plates, with TRAP (thrombin receptor activating peptide) -induced platelet aggregation. The syringe was primed with a 3.13% sodium citrate solution and then 20 mL of blood was drawn from healthy volunteers at 1500gPlatelet Rich Plasma (PRP) was separated by centrifugation for 20 minutes and treated with 1. mu.L of PGE1 solution (500. mu.g/mL of ethanol solution) per mL of PRP. After 5 min incubation at room temperature, it was centrifuged at 1200 g for 20 min to remove leukocytes. PRP without leukocytes was transferred in 5 mL portions to 15 mL PP tubes and pelleted by centrifugation at 3600 g. WhileThereafter, the upper plasma was decanted, and the platelet pellet from 5 mL PRP was resuspended in 1 mL Tyrode (120 mM NaCl, 2.6 mM KCl, 12 mM NaHCO3, 0.39 mM NaH2PO4, 10 mM HEPES, 0.35% BSA, 5.5 mM glucose, pH = 7.4) and adjusted to a platelet count of 3 × 105/μ L with Tyrode. 13 mL of this cell suspension are treated with 866. mu.l of a 10 mM CaCl2 solution and pipetted into a 96-well plate in an amount of 120. mu.l per well, into whose wells 15. mu.l of the substance to be tested have been added beforehand. Incubate in the dark at room temperature for 30 min, add 15 μ L TRAP solution (70-100 μ M) as agonist, shake at 37 ℃ for 20 min in SpectraMax, record kinetics at 650 nm, calculate the area under the curve for negative control (tyrode/DMSO) and positive control (15 μ L agonist/DMSO), and set the difference to 100%. Compounds to be tested were pipetted as serial dilutions and assayed in duplicate, the AUC for each substance concentration was also determined and% AUC inhibition compared to control was calculated. The IC50 values were calculated from the% inhibition by means of non-linear regression analysis according to the 4-parameter equation. The following table gives the results.
As can be seen from the above table, the compounds of the present invention all showed significant inhibitory effects in the platelet aggregation assay.

Claims (4)

1. Has the general formulaIA compound of the structure and pharmaceutically acceptable salts thereof,
( I )
wherein,
wherein,
r1 is selected from F, Cl, Br, I;
r2 is selected from C1-C3 alkyl.
2. A compound of the formula as defined in claim 1IA compound selected from the group consisting of,
3. a compound of the formula as defined in claim 2IA compound selected from the group consisting of,
4. a general formula as defined in claims 1 to 3IThe application of the compound and the pharmaceutically acceptable salt thereof in preparing medicines for treating thrombosis.
CN201410352064.8A 2014-07-23 2014-07-23 The tetrazole acetophenone compound that two alkyl replaces and purposes Expired - Fee Related CN104072435B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104529928A (en) * 2015-01-13 2015-04-22 佛山市赛维斯医药科技有限公司 One category of oxadiazole sulfoxide compounds, and preparation method and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998057937A2 (en) * 1997-06-19 1998-12-23 The Du Pont Merck Pharmaceutical Company Inhibitors of factor xa with a neutral p1 specificity group
US20110105490A1 (en) * 2009-10-29 2011-05-05 Han-Cheng Zhang 2,3-dihydro-1h-isoindol-1-imine derivatives useful as thrombin par-1 receptor antagonist
CN102241621A (en) * 2010-05-11 2011-11-16 江苏恒瑞医药股份有限公司 5,5-disubstituted-2-iminopyrrolidine derivatives, preparation method thereof, and medical applications thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998057937A2 (en) * 1997-06-19 1998-12-23 The Du Pont Merck Pharmaceutical Company Inhibitors of factor xa with a neutral p1 specificity group
US20110105490A1 (en) * 2009-10-29 2011-05-05 Han-Cheng Zhang 2,3-dihydro-1h-isoindol-1-imine derivatives useful as thrombin par-1 receptor antagonist
CN102241621A (en) * 2010-05-11 2011-11-16 江苏恒瑞医药股份有限公司 5,5-disubstituted-2-iminopyrrolidine derivatives, preparation method thereof, and medical applications thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104529928A (en) * 2015-01-13 2015-04-22 佛山市赛维斯医药科技有限公司 One category of oxadiazole sulfoxide compounds, and preparation method and application thereof

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