CN102010428A - Cefathiamidine compound and new preparation method thereof - Google Patents

Cefathiamidine compound and new preparation method thereof Download PDF

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CN102010428A
CN102010428A CN 201010568875 CN201010568875A CN102010428A CN 102010428 A CN102010428 A CN 102010428A CN 201010568875 CN201010568875 CN 201010568875 CN 201010568875 A CN201010568875 A CN 201010568875A CN 102010428 A CN102010428 A CN 102010428A
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cefathiamidine
filtrate
purification process
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organic solvent
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CN102010428B (en
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胡建荣
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Ling Kang Pharmaceutical Group Ltd By Share Ltd
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Abstract

The invention relates to a cefathiamidine compound and a new preparation method thereof. In the invention, the cefathiamidine compound with high purity is prepared by hydrolysis reaction and esterification, and the purity is more than 99.2%, the reaction step is simple, the yield is high, the cost is low, the quality of the preparation product is improved and the toxic or side effects are reduced; and strong acid salt is selected as the catalyst, the reaction time is short, the yield is high and cost is low, thus the strong acid slat is an ideal reaction catalyst.

Description

Cefathiamidine compound and new preparation method thereof
Technical field
The present invention relates to a kind of cefathiamidine compound and new preparation method thereof, belong to medical technical field.
Background technology
Cefathiamidine is by the β-Nei Xiananleikangshengsu of the common independent research of Shanghai Institute of Pharmaceutical Industry and Baiyunshan Pharmaceutics Stock-sharing Co., Ltd., Guangzhou City, belongs to first generation cephalosporin, for China's initiative is used for clinical.Antimicrobial spectrum is wider, stronger to gold-coloured staphylococci, Streptococcus viridans, pneumococcal effect, faecalis there is unique anti-microbial activity, is mainly used in infection such as respiratory tract infection due to gold-coloured staphylococci, streptococcus pneumoniae and the suis, biliary tract infection, urinary tract infections, gynecological infection, septicemia, pneumonia, meningitis.
Cefathiamidine (cefathiamidine), molecular formula: C 19H 28N 4O 6S 2, chemical being called (6R, 7R)-the 3-[(acetoxyl group) methyl]-7-[α-(N, N '-diisopropylamidinateand sulfenyl) kharophen]-8-oxo-5 thias-1-azabicyclo [4.2.0] oct-2-ene-2-formic acid betaine, structural formula is:
Figure BSA00000369046100011
Because cefathiamidine has the unique molecular structure of zwitter-ion inner salt, meet heat, meet light, meet moist lability, easily decompose variable color.Cefathiamidine uses bromoacetyl bromide in building-up process, if deal with improperly, and easy residual bromide anion in product.
In this external condensation reaction, solvent systems is selected bad, and impurity is difficult for removing, and causes content in crude product low easily, influences the clinical efficacy of medicine.At present the purification process to cefathiamidine has a lot, as with the cefathiamidine crude product with solvent treatment, through nucleogenesis, control the crystallization method of supersaturation concentration; Another kind of method commonly used is the method for transferring iso-electric point with acid, alkali, and the beta-lactam structure with acid, soda finishing method destructible cefathiamidine can cause product degradation as open loop, and product content reduces, and product stability is impacted; Adopt the dissolved method in addition in addition, this method needs a large amount of solvents, and cost is higher; The distillation crystallization process, shortcoming is the cost height, difficult operation, difficult quality guarantee.
Aspect cefathiamidine synthetic, though worked out other synthetic route, technology simple before do not improved the purity of cefathiamidine, yet so still need explore the novel method of cefathiamidine purifying.
Summary of the invention
The object of the present invention is to provide a kind of process for purification of cefathiamidine compound, obtain the cefathiamidine prosoma intermediate by hydrolysis reaction, by the charcoal absorption purifying, carry out esterification again and obtain highly purified cefathiamidine, reactions steps is simple, the productive rate height, cost is low, and product purity is greatly improved.
The technical scheme that the present invention solves comprises:
The invention provides the cefathiamidine compound shown in a kind of formula (I),
Figure BSA00000369046100021
It is characterized in that carrying out purifying by the method that comprises the steps:
(1) the cefathiamidine crude product is dispersed in the water, adds alkaline catalysts, solid is separated out in heating after the reaction,
Make intermediate (II);
Figure BSA00000369046100031
(2) intermediate (II) is dissolved in the organic solvent, adds the charcoal absorption removal of impurities, filter decarburization, get filtrate;
(3) add Glacial acetic acid in step (2) gained filtrate, add strong acid salt catalyzer and band aqua, reaction obtains cefathiamidine.
Figure BSA00000369046100032
Above-mentioned described purification process is characterized in that described alkaline catalysts is selected from sodium hydroxide, potassium hydroxide, ammoniacal liquor, sodium bicarbonate, saleratus in the described step (1); Preferred described alkaline catalysts is a sodium hydroxide.
Above-mentioned described purification process, it is characterized in that in the described step (2), described organic solvent is selected from: methyl alcohol, ethanol, acetonitrile, the trimethyl carbinol, Virahol, trichloromethane, methylene dichloride, ether, sherwood oil, phenylcarbinol, N, in the dinethylformamide one or more are preferably phenylcarbinol.
Above-mentioned described purification process, it is characterized in that in the described step (3), in filtrate, add Glacial acetic acid and mix stirring, add strong acid salt catalyzer and band aqua again, stirring reaction, filtering is not tolerant, filtrate is used the solid drier drying again, organic solvent is removed in underpressure distillation, and vacuum-drying promptly gets highly purified cefathiamidine.
Wherein, described strong acid salt catalyzer is selected from ferric sulfate (Fe2 (SO4) 39H2O), iron(ic) chloride (FeCl36H2O), cupric chloride (CuCl22H2O), copper sulfate (CuSO45H2O), is preferably ferric sulfate (Fe2 (SO4) 39H2O).
Wherein, described band aqua is selected from hexanaphthene, sherwood oil, benzene, methylene dichloride, n-propyl alcohol, and preferred described band aqua is a hexanaphthene.
Wherein, described solid drier is selected from anhydrous magnesium sulfate, Calcium Chloride Powder Anhydrous, anhydrous sodium sulphate, anhydrous calciumsulphate or activated alumina, is preferably activated alumina.
The above-mentioned described purification process of the present invention, the purity that it is characterized in that the cefathiamidine compound that obtains is greater than 99.2%.
As the present invention's one preferred embodiment, the purification step of described cefathiamidine compound comprises:
(1) the cefathiamidine crude product is dispersed in the water, adds 5% sodium hydroxide solution, be heated to 70-80 ℃ as catalyzer, stirring reaction 1-2 hour, separate out solid, to filter, drying gets intermediate (II);
(2) intermediate (II) is dissolved in the organic solvent, adds the gac of total liquid volume 0.2-0.5% (g/ml), be incubated 50-60 ℃ of whip attachment 30min, filter decarburization, get filtrate;
(3) in filtrate, add Glacial acetic acid and mix stirring, add strong acid salt again as catalyzer, cyclohexane give is the band aqua, 40-50 ℃ of stirring reaction 30-60min, filtering insolubles, filtrate are used the solid drier drying again, and organic solvent is removed in underpressure distillation, 50-60 ℃ of vacuum-drying promptly gets highly purified cefathiamidine.
The invention has the advantages that: make highly purified cefathiamidine compound by hydrolysis reaction and esterification, reactions steps is simple, the productive rate height, and cost is low, has improved quality product, has reduced toxic side effect.In addition, it is catalyzer that the present invention selects strong acid salt for use, and the reaction times is short, the yield height, and cost is low, is a kind of better catalysts.
Embodiment
Embodiment 1 The purifying of cefathiamidine
(1) 100g cefathiamidine crude product is dispersed in the 500ml water, adds 5% sodium hydroxide solution 20ml as catalyzer, be heated to 70 ℃, stirring reaction 2 hours is separated out solid, filters, and 50 ℃ of vacuum-dryings get the 81.47g intermediate, yield 92.6%;
(2) the 81.47g intermediate is dissolved in the 500ml phenylcarbinol, adds the gac of 0.5g, be incubated 80 ℃ of whip attachment 30min, filter decarburization, get filtrate;
(3) in filtrate, add the 15.8g Glacial acetic acid and mix stirring, add 3.5g ferric sulfate (Fe2 (SO4) 39H2O) again as catalyzer, the 20ml cyclohexane give is band aqua, 50 ℃ of stirring reaction 60min, filtering insolubles, filtrate is used the activated alumina drying again, phenylcarbinol is removed in underpressure distillation, and 60 ℃ of vacuum-dryings obtain highly purified cefathiamidine 90.8g, yield 90.8%, purity 99.92%.
Structural identification
1, ultimate analysis C19H28N4O6S2
Theoretical value: C:48.24%; H:5.92%; N:11.85%; O:20.31%; S:13.54%.
Measured value: C:48.44%; H:5.93%; N:11.82%; O:20.331%; S:13.50%
2, magnetic resonance spectroscopy is resolved
1H NMR (DMSO-d6) δ: 1.15[d, J=7Hz, 12H, CH (CH3) 2 * 2], 2.02 (s, 3H, OCOCH3), 3.34~3.55 (q, J=18Hz, 2H, C2-H), 3.95 (s, 2H, SCH2CO), 3.95 (m, 2H, CH * 2), 4.79~5.03 (q, the AB type, J=12Hz, 2H, C3-CH * 2), 5.05 (d, J=5Hz, 1H, C6-H), 5.59 (q, J1=5Hz, J2=7Hz, 1H, C7-H), 9.47 (d, J=7Hz, 1H, NH).
Embodiment 2 The purifying of cefathiamidine
(1) 100g cefathiamidine crude product is dispersed in the 500ml water, adds 10% sodium hydroxide solution 20ml as catalyzer, be heated to 70 ℃, stirring reaction 2 hours is separated out solid, filters, and 50 ℃ of vacuum-dryings get the 82.17g intermediate, yield 92.3%;
(2) the 82.17g intermediate is dissolved in the 500ml phenylcarbinol, adds the gac of 0.5g, be incubated 80 ℃ of whip attachment 30min, filter decarburization, get filtrate;
(3) in filtrate, add the 15.8g Glacial acetic acid and mix stirring, add 3.5g ferric sulfate (Fe2 (SO4) 39H2O) again as catalyzer, the 20ml cyclohexane give is band aqua, 50 ℃ of stirring reaction 60min, filtering insolubles, filtrate is used the activated alumina drying again, phenylcarbinol is removed in underpressure distillation, and 60 ℃ of vacuum-dryings obtain highly purified cefathiamidine 91.3g, yield 91.3%, purity 99.89%.
Embodiment 3 The purifying of cefathiamidine
(1) 100g cefathiamidine crude product is dispersed in the 500ml water, adds 10% sodium hydroxide solution 20ml as catalyzer, be heated to 75 ℃, stirring reaction 1.5 hours is separated out solid, filters, and 50 ℃ of vacuum-dryings get the 81.17g intermediate, yield 91.5%;
(2) the 81.17g intermediate is dissolved in the 500ml phenylcarbinol, adds the gac of 0.75g, be incubated 80 ℃ of whip attachment 30min, filter decarburization, get filtrate;
(3) in filtrate, add the 15.2g Glacial acetic acid and mix stirring, add 3.5g ferric sulfate (Fe2 (SO4) 39H2O) again as catalyzer, the 20ml cyclohexane give is band aqua, 50 ℃ of stirring reaction 60min, filtering insolubles, filtrate is used the activated alumina drying again, phenylcarbinol is removed in underpressure distillation, and 60 ℃ of vacuum-dryings obtain highly purified cefathiamidine 92.1g, yield 92.1%, purity 99.89%.

Claims (9)

1. the cefathiamidine compound shown in the formula (I),
Figure FSA00000369046000011
It is characterized in that carrying out purifying by the method that comprises the steps:
(1) the cefathiamidine crude product is dispersed in the water, adds alkaline catalysts, solid is separated out in heating after the reaction, make intermediate (II);
(2) intermediate (II) is dissolved in the organic solvent, adds the charcoal absorption removal of impurities, filter decarburization, get filtrate;
(3) add Glacial acetic acid in step (2) gained filtrate, add strong acid salt catalyzer and band aqua, reaction obtains cefathiamidine.
Figure FSA00000369046000013
2. purification process according to claim 1 is characterized in that described alkaline catalysts is selected from sodium hydroxide, potassium hydroxide, ammoniacal liquor, sodium bicarbonate, saleratus in the described step (1); Preferred described alkaline catalysts is a sodium hydroxide.
3. purification process according to claim 1, it is characterized in that in the described step (2), described organic solvent is selected from: methyl alcohol, ethanol, acetonitrile, the trimethyl carbinol, Virahol, trichloromethane, methylene dichloride, ether, sherwood oil, phenylcarbinol, N, in the dinethylformamide one or more are preferably phenylcarbinol.
4. purification process according to claim 1, it is characterized in that in the described step (3), in filtrate, add Glacial acetic acid and mix stirring, add strong acid salt catalyzer and band aqua again, stirring reaction, filtering is not tolerant, filtrate is used the solid drier drying again, organic solvent is removed in underpressure distillation, and vacuum-drying promptly gets highly purified cefathiamidine.
5. according to the described purification process of claim 1-4, it is characterized in that in the described step (3), described strong acid salt catalyzer is selected from ferric sulfate (Fe2 (SO4) 39H2O), iron(ic) chloride (FeCl36H2O), cupric chloride (CuCl22H2O), copper sulfate (CuSO45H2O), is preferably ferric sulfate (Fe2 (SO4) 39H2O).
6. according to the described purification process of claim 1-5, it is characterized in that in the described step (3), described band aqua is selected from hexanaphthene, sherwood oil, benzene, methylene dichloride, n-propyl alcohol, preferred described band aqua is a hexanaphthene.
7. according to the described purification process of claim 1-6, it is characterized in that described solid drier is selected from anhydrous magnesium sulfate, Calcium Chloride Powder Anhydrous, anhydrous sodium sulphate, anhydrous calciumsulphate or activated alumina, is preferably activated alumina in the described step (3).
8. according to the described purification process of claim 1-7, it is characterized in that described step is:
(1) the cefathiamidine crude product is dispersed in the water, adds 5% sodium hydroxide solution, be heated to 70-80 ℃ as catalyzer, stirring reaction 1-2 hour, separate out solid, to filter, drying gets intermediate (II);
(2) intermediate (II) is dissolved in the organic solvent, adds the gac of total liquid volume 0.2-0.5% (g/ml), be incubated 50-60 ℃ of whip attachment 30min, filter decarburization, get filtrate;
(3) in filtrate, add Glacial acetic acid and mix stirring, add strong acid salt again as catalyzer, cyclohexane give is the band aqua, 40-50 ℃ of stirring reaction 30-60min, filtering insolubles, filtrate are used the solid drier drying again, and organic solvent is removed in underpressure distillation, 50-60 ℃ of vacuum-drying promptly gets highly purified cefathiamidine.
9. according to the described purification process of claim 1-8, the purity that it is characterized in that the cefathiamidine compound that obtains is greater than 99.2%.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102863461A (en) * 2011-07-08 2013-01-09 广州白云山制药股份有限公司广州白云山化学制药厂 (6R, 7R)-3-hydroxymethyl-7-[alpha-(N, N'-diisopropylamidino thio)-acetamido]-8-oxo-5-thia-1-azabicycle [4, 2, 0]-oct-2-ene-2-carboxylic acid
CN105646534A (en) * 2016-02-18 2016-06-08 海南灵康制药有限公司 Novel-crystal-form cefathiamidine compound adopting crystal product molecular assembly and form optimization technology in particle process and preparation
CN108948048A (en) * 2018-07-26 2018-12-07 华北制药河北华民药业有限责任公司 A kind of refining methd of cefathiamidine
CN115124552A (en) * 2022-06-16 2022-09-30 国药集团威奇达药业有限公司 Preparation method of deacetyl cefathiamidine

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CN1385434A (en) * 2002-06-10 2002-12-18 广州白云山制药股份有限公司广州白云山化学制药厂 Method for making cefathiamidine crystal
CN1431211A (en) * 2003-01-28 2003-07-23 广州白云山制药股份有限公司 Amine salt of cefathiamiding, its preparing method and application

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CN1385434A (en) * 2002-06-10 2002-12-18 广州白云山制药股份有限公司广州白云山化学制药厂 Method for making cefathiamidine crystal
CN1431211A (en) * 2003-01-28 2003-07-23 广州白云山制药股份有限公司 Amine salt of cefathiamiding, its preparing method and application

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102863461A (en) * 2011-07-08 2013-01-09 广州白云山制药股份有限公司广州白云山化学制药厂 (6R, 7R)-3-hydroxymethyl-7-[alpha-(N, N'-diisopropylamidino thio)-acetamido]-8-oxo-5-thia-1-azabicycle [4, 2, 0]-oct-2-ene-2-carboxylic acid
CN105646534A (en) * 2016-02-18 2016-06-08 海南灵康制药有限公司 Novel-crystal-form cefathiamidine compound adopting crystal product molecular assembly and form optimization technology in particle process and preparation
CN108948048A (en) * 2018-07-26 2018-12-07 华北制药河北华民药业有限责任公司 A kind of refining methd of cefathiamidine
CN115124552A (en) * 2022-06-16 2022-09-30 国药集团威奇达药业有限公司 Preparation method of deacetyl cefathiamidine

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