CN101805292A - Pyrazolines compound as well as application and preparation method thereof - Google Patents

Pyrazolines compound as well as application and preparation method thereof Download PDF

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Publication number
CN101805292A
CN101805292A CN 201010156628 CN201010156628A CN101805292A CN 101805292 A CN101805292 A CN 101805292A CN 201010156628 CN201010156628 CN 201010156628 CN 201010156628 A CN201010156628 A CN 201010156628A CN 101805292 A CN101805292 A CN 101805292A
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edaravone
preparation
compound
propylene glycol
sodium pyrosulfite
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CN101805292B (en
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黄鑫
杨士豹
周春燕
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Jilin Boda Pharmaceutical Ltd By Share Ltd
Jiangsu Simcere Pharmaceutical Co Ltd
Simcere Pharmaceutical Co Ltd
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Jiangsu Simcere Pharmaceutical R&D Co Ltd
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Abstract

The invention relates to a compound having a structure as shown in a specification as well as a preparation method and application thereof. The preparation method comprises the steps of: reacting edaravone, sodium pyrosulfite and 1,2-propylene glycol; placing the solution of the reaction under an environment with the temperature of 35-55 DEG C for 96-168 hours and filtering for later use; and separating the edaravone solution by using a reversed phase high performance liquid chromatography method for preparing 4-(1-hydroxy-2-sulfo-propane-2-yl)-3-methyl-1-phenyl-2-pyrazoline-5-ketone. The compound can be used a comparison product of edaravone impurities and is convenient for controlling edaravone and the content of the edaravone in relevant preparations.

Description

Pyrazoline compounds, purposes and preparation method thereof
Invention field
The present invention relates to 4-(1-hydroxyl-2-sulfonic group-propane-2-yl)-3-methyl isophthalic acid-phenyl-2-pyrazolin-5-one and its production and use.
Background technology
3-methyl isophthalic acid-phenyl-2-pyrazolin-5-one, popular name: Edaravone, be the cerebral infarction medication, belong to free radical scavenging formulation neuroprotective, its structural formula is suc as formula shown in the I:
Formula I
As clinical commonly used drug, Edaravone because the existence of high temperature process such as sterilization, might produce impurity and causes drug quality decline in its production, storage, use.
Domestic report to related substance in the Edaravone Injection mostly is reaction raw materials etheric acid second vinegar and phenylhydrazine, but the reflection Edaravone Injection is had an effect by Edaravone and auxiliary material and is produced related substance research and reports seldom, and above-mentioned Edaravone and auxiliary material are had an effect and the preparation method that produces related substance also rarely has report.
Summary of the invention
One of purpose of the present invention provides a kind of new compound of following structure: 4-(1-hydroxyl-2-sulfonic group-propane-2-yl)-3-methyl isophthalic acid-phenyl-2-pyrazolin-5-one.Below be referred to as compd A.
Figure GSA00000097917600012
Formula II
Chemical name is: 4-(1-hydroxyl-2-sulfonic group-propane-2-yl)-3-methyl isophthalic acid-phenyl-2-pyrazolin-5-one.
Two of purpose of the present invention provides a kind of method for preparing above compound, for achieving the above object, adopts following preparation separating technology:
At first, take by weighing Edaravone, Sodium Pyrosulfite, 1 respectively, 2-propylene glycol, three's mass ratio are 1~5: 1~5: 10~50, place open container.
Above-mentioned raw materials adds solvent and is mixed with (pH=4~7) solution or suspension liquid, and solvent can be water or organic solvent.
This solution or uncovered the placing under 35~55 ℃ of envrionment temperatures of suspension liquid were stirred 96~168 hours, be cooled to the room temperature after-filtration, filtrate for later use.
Utilize reversed-phase liquid chromatography side that above-mentioned solution is separated again, the preparation compd A.
Final compd A is analyzed its purity with HPLC, and adopts MS, NMR to prove conclusively its structure.
Edaravone, Sodium Pyrosulfite, 1,2-propylene glycol, three's mass ratio preferred 1~2: 1~2: 10~20.
Edaravone, Sodium Pyrosulfite, 1,2-propylene glycol, three's mass ratio further preferred 1: 1: 10.
Edaravone is complete synthesis cerebral apoplexy neuroprotective, owing to there is high temperature process such as high-temperature sterilization, may produces compd A in its preparation and causes downgrade in preparation and the storage.The present invention adopts reversed-phased high performace liquid chromatographic that compd A has been carried out separating preparation, this method is simple, the recovery rate height, and product purity reaches (HPLC) more than 90%, can be used as Edaravone impurity reference substance, be convenient to the amount of the compd A of control ratio Edaravone and related preparations.
The finished product carry out structure with nucleus magnetic resonance, mass spectrum and identify attached data declaration.
1, LC-MS (ESI (+)) molecular ion peak (M+1), m/z is 313;
LC-MS (ESI (-)) molecular ion peak (M-1), m/z are 311;
2、NMR(DMSO-d 6)
Figure GSA00000097917600021
Figure GSA00000097917600022
Figure GSA00000097917600031
Embodiment:
The present invention is further elaborated below in conjunction with specific embodiment, but do not limit the present invention.
Embodiment 1
Take by weighing Edaravone 4g, Sodium Pyrosulfite 5g, 1 respectively, 2-propylene glycol 50g, water 50mL place open container.
Place 50 ℃ of oil bath heated and stirred with this suspension liquid is uncovered, take out after 96 hours, put and be chilled to room temperature, filter filtrate for later use.
Adopt anti-phase medium pressure liguid chromatograph that above-claimed cpd A solution is separated, prepare compd A 103mg, yield 1.4%.
Embodiment 2
Take by weighing Edaravone 100mg, Sodium Pyrosulfite 50mg, 1 respectively, 2-propylene glycol 500mg, DMSO 1mL place open container.
Place 40 ℃ of oil bath heated and stirred with this solution is uncovered, take out after 168 hours, put and be chilled to room temperature, filter filtrate for later use.
Adopt rp-hplc that above-claimed cpd A solution is separated, prepare compd A 5mg, yield 2.7%.

Claims (10)

1. new compound has following structure:
Figure FSA00000097917500011
2. method for preparing the described compound of claim 1, this method comprises: Edaravone, Sodium Pyrosulfite, 1, the 2-propylene glycol reacts.
3. preparation method according to claim 2 is characterized in that described raw material is added solution or the suspension liquid that solvent is mixed with pH=4~7.
4. preparation method according to claim 3 is characterized in that solvent can be water or organic solvent.
5. preparation method according to claim 2 is characterized in that Edaravone, Sodium Pyrosulfite, 1, and 2-propylene glycol, three's mass ratio are 1~5: 1~5: 10~50.
6. preparation method according to claim 2 is characterized in that Edaravone, Sodium Pyrosulfite, 1, and 2-propylene glycol, three's mass ratio are 1~2: 1~2: 10~20.
7. preparation method according to claim 2 is characterized in that Edaravone, Sodium Pyrosulfite, 1, and 2-propylene glycol, three's mass ratio are 1: 1: 10.
8. preparation method according to claim 2 is characterized in that temperature of reaction is 35~55 ℃.
9. preparation method according to claim 2 is characterized in that the reaction times is 96~168 hours.
10. the application of the described compound of claim 1 in preparation Edaravone impurity reference substance.
CN 201010156628 2010-04-27 2010-04-27 Pyrazolines compound as well as application and preparation method thereof Active CN101805292B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102140080A (en) * 2011-01-24 2011-08-03 江苏先声药物研究有限公司 Method for synthesizing sulfoacid organic compounds in one step
CN102336710A (en) * 2011-07-11 2012-02-01 宁波大学 Method for synthesizing edaravone derivative
CN105646530A (en) * 2014-12-03 2016-06-08 江苏先声药业有限公司 Phenyl pyrazole compound, preparation method and application thereof
CN106167465A (en) * 2016-07-06 2016-11-30 扬子江药业集团江苏海慈生物药业有限公司 A kind of Edaravone dimer impurity compound and preparation method thereof
CN106316957A (en) * 2015-06-15 2017-01-11 江苏正大丰海制药有限公司 Edaravone impurity intermediate, preparation method and application thereof
CN108072710A (en) * 2016-11-14 2018-05-25 江苏正大丰海制药有限公司 A kind of Edaravone Sodium Chloride Injections Related Substances detection method
WO2022037537A1 (en) * 2020-08-17 2022-02-24 先声药业有限公司 Stable pharmaceutical composition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1449754A (en) * 2003-04-16 2003-10-22 浙江震元制药有限公司 Edaravone medicine composition and preparation thereof
CN101288650A (en) * 2008-06-04 2008-10-22 江苏先声药物研究有限公司 Edaravone lyophilized preparation and preparation technique thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1449754A (en) * 2003-04-16 2003-10-22 浙江震元制药有限公司 Edaravone medicine composition and preparation thereof
CN101288650A (en) * 2008-06-04 2008-10-22 江苏先声药物研究有限公司 Edaravone lyophilized preparation and preparation technique thereof

Non-Patent Citations (1)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102140080A (en) * 2011-01-24 2011-08-03 江苏先声药物研究有限公司 Method for synthesizing sulfoacid organic compounds in one step
CN102140080B (en) * 2011-01-24 2013-05-22 江苏先声药物研究有限公司 Method for synthesizing sulfoacid organic compounds in one step
CN102336710A (en) * 2011-07-11 2012-02-01 宁波大学 Method for synthesizing edaravone derivative
CN102336710B (en) * 2011-07-11 2014-03-12 宁波大学 Method for synthesizing edaravone derivative
CN105646530A (en) * 2014-12-03 2016-06-08 江苏先声药业有限公司 Phenyl pyrazole compound, preparation method and application thereof
CN105646530B (en) * 2014-12-03 2020-05-12 南京先声东元制药有限公司 Phenylpyrazole compound and preparation method and application thereof
CN106316957A (en) * 2015-06-15 2017-01-11 江苏正大丰海制药有限公司 Edaravone impurity intermediate, preparation method and application thereof
CN106316957B (en) * 2015-06-15 2018-12-28 江苏正大丰海制药有限公司 A kind of intermediate of impurity phenylhydrazine and its preparation method and application
CN106167465A (en) * 2016-07-06 2016-11-30 扬子江药业集团江苏海慈生物药业有限公司 A kind of Edaravone dimer impurity compound and preparation method thereof
CN106167465B (en) * 2016-07-06 2018-06-22 扬子江药业集团江苏海慈生物药业有限公司 A kind of Edaravone dimer impurity compound and preparation method thereof
CN108072710A (en) * 2016-11-14 2018-05-25 江苏正大丰海制药有限公司 A kind of Edaravone Sodium Chloride Injections Related Substances detection method
WO2022037537A1 (en) * 2020-08-17 2022-02-24 先声药业有限公司 Stable pharmaceutical composition

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