CN109020871A - A kind of preparation method of Ondansetron impurity A - Google Patents
A kind of preparation method of Ondansetron impurity A Download PDFInfo
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- CN109020871A CN109020871A CN201811163994.3A CN201811163994A CN109020871A CN 109020871 A CN109020871 A CN 109020871A CN 201811163994 A CN201811163994 A CN 201811163994A CN 109020871 A CN109020871 A CN 109020871A
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- ondansetron
- hsccc
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/56—Ring systems containing three or more rings
- C07D209/80—[b, c]- or [b, d]-condensed
- C07D209/82—Carbazoles; Hydrogenated carbazoles
- C07D209/88—Carbazoles; Hydrogenated carbazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
The invention discloses a kind of preparation methods of Ondansetron impurity A, include the following steps: first to weigh Ondansetron raw material and appropriate aluminium chloride, add aqueous hydrogen peroxide solution dissolution that Ondansetron solution is made, the mass fraction of hydrogen peroxide is 12% in aqueous hydrogen peroxide solution；The solution is transferred to the reaction kettle with polytetrafluoroethyllining lining, is put into after sealing in baking oven in 140 DEG C of reaction 8h；Reaction is completed, and after being cooled to room temperature, ethyl acetate portion is collected in ethyl acetate extraction, and concentrate drying obtains hydro-thermal reaction extract；Again hydro-thermal reaction extract is isolated and purified to obtain impurity A with HSCCC method.Method provided by the invention first passes through hydro-thermal reaction and Ondansetron is made to degrade to obtain impurity A, D, economic and environment-friendly using water as medium；It can isolate and purify to obtain impurity A, D respectively by mono- step of HSCCC again, purity is 98% or more.
Description
Technical field
The invention belongs to chemical fields, are related to the preparation method of Ondansetron impurity.
Background technique
Ondansetron (ondansetron hydrochloride, 1), trade name ondansetron (Zofran), chemical name 9-
Methyl-1,2,3,9- tetrahydro -3- [(2- methyl-1 H-imidazole-1-group) methyl] -4H- carbazole -4- keto hydrochloride dihydrate are
Potent, the highly selective 5-HT3 receptor antagonist of one kind of Ge Lansu company nineteen ninety listing, can successfully alleviate by cis-platinum,
Nausea and vomiting caused by non-cisplatin chemotherapy and radiotherapy, effect is better than Metoclopramide, and tolerance is high, incidence of side effects
It is low.
Because most of impurity in drug have potential toxicity and bioactivity, the measurement of these impurity, to drug
Safety evaluation is most important, will affect Drug safety and validity, therefore impurity preparation and control are chemicals quality
One important content of control.Currently, Ondansetron impurity is mainly prepared by chemical synthesis, the organic reagent of use is more, no
Enough environmental protection.
The chemical structural formula of Ondansetron and impurity A, D is as follows.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide the preparation methods of Ondansetron impurity A, D.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of preparation method of Ondansetron impurity A, includes the following steps:
Step S1, hydro-thermal reaction: first weighing Ondansetron raw material and appropriate aluminium chloride, adds aqueous hydrogen peroxide solution dissolution system
At Ondansetron solution, the mass fraction of hydrogen peroxide is 12% in aqueous hydrogen peroxide solution；The solution is transferred to poly-
The reaction kettle of tetrafluoroethene liner is put into baking oven in 140 DEG C of reaction 8h after sealing；Reaction is completed, after being cooled to room temperature, acetic acid
Ethyl ester extraction, collects ethyl acetate portion, and concentrate drying obtains hydro-thermal reaction extract.
Mono- step of step S2, HSCCC isolates and purifies: two-phase solvent Systematic selection volume ratio is n-hexane/vinegar of 5:7:5:1:5
Each solvent is sufficiently mixed, stratification by acetoacetic ester/methanol/ethanol/water according to volume ratio, upper and lower mutually to separate, ultrasound to
With；Water intaking thermal response extract is configured to sample solution with isometric upper and lower phase mixed solvent ultrasonic dissolution；It will prepare
Solvent system on be mutually pumped into HSCCC helix tube as stationary phase, after upper phase is full of helix tube, open HSCCC, work be set
Make parameter, helix tube will be mutually pumped under solvent system as mobile phase, when mobile phase starts persistently to flow out from detector tail end,
Show that two-phase solvent reaches fluid dynamic equilibrium in helix tube；Sampling valve injects sample solution, and start recording chromatogram is simultaneously held
It is continuous to be pumped into mobile phase separation, the corresponding elution fraction of impurity A is collected according to chromatogram, is concentrated and dried to obtain the final product.
Preferably, Ondansetron concentration is 5mg/mL in step S1.
Preferably, concentration of aluminum chloride is 0.5mg/mL in step S1.
Preferably, HSCCC revolving speed 850r/min in step S2.
Preferably, HSCCC volume flow 1.3mL/min in step S2.
Preferably, HSCCC Detection wavelength 230nm in step S2.
The utility model has the advantages that
Method provided by the invention first passes through hydro-thermal reaction and Ondansetron is made to degrade to obtain impurity A, D, using water as medium,
It is economic and environment-friendly；It can isolate and purify to obtain impurity A, D respectively by mono- step of HSCCC again, purity is 98% or more.
Detailed description of the invention
Fig. 1 is the HSCCC separation chromatogram of embodiment 1；
Fig. 2 is the HSCCC separation chromatogram of embodiment 2.
Specific embodiment
It is specific with reference to the accompanying drawings and examples to introduce essentiality content of the present invention, but guarantor of the invention is not limited with this
Protect range.
Embodiment 1: the preparation of Ondansetron impurity A
Include the following steps:
Hydro-thermal reaction: step S1 first weighs Ondansetron raw material 100mg and appropriate aluminium chloride, adds aqueous hydrogen peroxide solution
Ondansetron solution is made in dissolution, and the mass fraction of hydrogen peroxide is 12% in aqueous hydrogen peroxide solution, and Ondansetron concentration is
5mg/mL, concentration of aluminum chloride 0.5mg/mL；The solution is transferred to the reaction kettle that 50mL has polytetrafluoroethyllining lining, sealing
After be put into baking oven in 140 DEG C of reaction 8h；Reaction is completed, and after being cooled to room temperature, ethyl acetate portion is collected in ethyl acetate extraction
Point, concentrate drying obtains hydro-thermal reaction extract；
Mono- step of step S2, HSCCC isolates and purifies: two-phase solvent Systematic selection volume ratio is n-hexane/vinegar of 5:7:5:1:5
Each solvent is sufficiently mixed, stratification by acetoacetic ester/methanol/ethanol/water according to volume ratio, upper and lower mutually to separate, ultrasound to
With；Water intaking thermal response extract is configured to sample solution with solvent supersonic dissolution mutually and under 10mL is mixed on 10mL；It will prepare
It is mutually pumped on good solvent system in HSCCC (with field TEB300B) helix tube as stationary phase, after upper phase is full of helix tube,
HSCCC is opened, revolving speed 850r/min, volume flow 1.3mL/min, Detection wavelength 230nm are set, will be mutually pumped under solvent system
Helix tube shows that two-phase solvent reaches in helix tube when mobile phase starts persistently to flow out from detector tail end as mobile phase
Fluid dynamic equilibrium；Sampling valve injects 20mL sample solution, and start recording chromatogram is simultaneously persistently pumped into mobile phase separation, according to
Chromatogram (such as Fig. 1) collects the corresponding elution fraction of impurity A, is concentrated and dried to obtain the final product, purity 98.9%, yield 56.8%.
Embodiment 2: the preparation of Ondansetron impurity D
Include the following steps:
Hydro-thermal reaction: step S1 first weighs Ondansetron raw material 100mg and appropriate manganese chloride, adds aqueous hydrogen peroxide solution
Ondansetron solution is made in dissolution, and the mass fraction of hydrogen peroxide is 17% in aqueous hydrogen peroxide solution, and Ondansetron concentration is
5mg/mL, manganese chloride concentration are 0.5mg/mL；The solution is transferred to the reaction kettle that 50mL has polytetrafluoroethyllining lining, sealing
After be put into baking oven in 170 DEG C of reaction 6h；Reaction is completed, and after being cooled to room temperature, ethyl acetate portion is collected in ethyl acetate extraction
Point, concentrate drying obtains hydro-thermal reaction extract；
Mono- step of step S2, HSCCC isolates and purifies: two-phase solvent Systematic selection volume ratio is n-hexane/vinegar of 5:6:3:2:6
Each solvent is sufficiently mixed, stratification by acetoacetic ester/methanol/ethanol/water according to volume ratio, upper and lower mutually to separate, ultrasound to
With；Water intaking thermal response extract is configured to sample solution with solvent supersonic dissolution mutually and under 10mL is mixed on 10mL；It will prepare
It is mutually pumped on good solvent system in HSCCC (with field TEB300B) helix tube as stationary phase, after upper phase is full of helix tube,
HSCCC is opened, revolving speed 850r/min, volume flow 1.3mL/min, Detection wavelength 230nm are set, will be mutually pumped under solvent system
Helix tube shows that two-phase solvent reaches in helix tube when mobile phase starts persistently to flow out from detector tail end as mobile phase
Fluid dynamic equilibrium；Sampling valve injects 20mL sample solution, and start recording chromatogram is simultaneously persistently pumped into mobile phase separation, according to
Chromatogram (such as Fig. 2) collects the corresponding elution fraction of impurity D, is concentrated and dried to obtain the final product, purity 98.5%, yield 47.2%.
Method provided by the invention first passes through hydro-thermal reaction and Ondansetron is made to degrade to obtain impurity A, D, using water as medium,
It is economic and environment-friendly；It can isolate and purify to obtain impurity A, D respectively by mono- step of HSCCC again, purity is 98% or more.
The effect of above-described embodiment is specifically to introduce essentiality content of the invention, but those skilled in the art should know
Protection scope of the present invention should not be confined to the specific embodiment by road.
Claims (6)
1. a kind of preparation method of Ondansetron impurity A, which comprises the steps of:
Step S1, hydro-thermal reaction: first weighing Ondansetron raw material and appropriate aluminium chloride, adds aqueous hydrogen peroxide solution dissolution to be made high
Dan Siqiong solution, the mass fraction of hydrogen peroxide is 12% in aqueous hydrogen peroxide solution；The solution is transferred to polytetrafluoro
The reaction kettle of ethylene liner is put into baking oven in 140 DEG C of reaction 8h after sealing；Reaction is completed, after being cooled to room temperature, ethyl acetate
Extraction, collects ethyl acetate portion, and concentrate drying obtains hydro-thermal reaction extract.
Mono- step of step S2, HSCCC isolates and purifies: two-phase solvent Systematic selection volume ratio is n-hexane/acetic acid second of 5:7:5:1:5
Each solvent is sufficiently mixed, stratification by ester/methanol/ethanol/water according to volume ratio, upper and lower mutually to separate, and ultrasound is stand-by；It takes
Hydro-thermal reaction extract is configured to sample solution with isometric upper and lower phase mixed solvent ultrasonic dissolution；By prepared solvent
It is mutually pumped into system in HSCCC helix tube as stationary phase, after upper phase is full of helix tube, opens HSCCC, setting work is joined
Number, will mutually be pumped into helix tube as mobile phase and shows when mobile phase starts persistently to flow out from detector tail end under solvent system
Two-phase solvent reaches fluid dynamic equilibrium in helix tube；Sampling valve injects sample solution, and start recording chromatogram simultaneously continues to pump
Enter mobile phase separation, the corresponding elution fraction of impurity A is collected according to chromatogram, is concentrated and dried to obtain the final product.
2. preparation method according to claim 1, it is characterised in that: Ondansetron concentration is 5mg/mL in step S1.
3. preparation method according to claim 1, it is characterised in that: concentration of aluminum chloride is 0.5mg/mL in step S1.
4. preparation method according to claim 1, it is characterised in that: HSCCC revolving speed 850r/min in step S2.
5. preparation method according to claim 1, it is characterised in that: HSCCC volume flow 1.3mL/min in step S2.
6. preparation method according to claim 1, it is characterised in that: HSCCC Detection wavelength 230nm in step S2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811163994.3A CN109020871A (en) | 2018-10-03 | 2018-10-03 | A kind of preparation method of Ondansetron impurity A |
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| CN201811163994.3A CN109020871A (en) | 2018-10-03 | 2018-10-03 | A kind of preparation method of Ondansetron impurity A |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004065381A1 (en) * | 2003-01-24 | 2004-08-05 | Synthon B.V. | Process for making ondansetron and intermediates thereof |
| CN102718716A (en) * | 2012-07-08 | 2012-10-10 | 湖南尔文生物科技有限公司 | Preparation method of nizofenone |
-
2018
- 2018-10-03 CN CN201811163994.3A patent/CN109020871A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004065381A1 (en) * | 2003-01-24 | 2004-08-05 | Synthon B.V. | Process for making ondansetron and intermediates thereof |
| CN102718716A (en) * | 2012-07-08 | 2012-10-10 | 湖南尔文生物科技有限公司 | Preparation method of nizofenone |
Non-Patent Citations (3)
| Title |
|---|
| 倪坤仪等: "盐酸昂丹司琼杂质及降解产物的分离测定", 《中国医药工业杂志》 * |
| 高飞飞等: "抗呕吐药昂丹司琼相关杂质的合成", 《化学试剂》 * |
| 黄文龙等: "蒽丹西酮合成新工艺反应机理的研究", 《中国药科大学学报》 * |
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