CN105085496B - A kind of method and intermediate for preparing Lapatinib - Google Patents

A kind of method and intermediate for preparing Lapatinib Download PDF

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Publication number
CN105085496B
CN105085496B CN201510593037.4A CN201510593037A CN105085496B CN 105085496 B CN105085496 B CN 105085496B CN 201510593037 A CN201510593037 A CN 201510593037A CN 105085496 B CN105085496 B CN 105085496B
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compound
formula
salts
lapatinib
reaction
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CN105085496A (en
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袁建勇
郭卿
李雁武
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Chongqing Medical University
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D405/00Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
    • C07D405/02Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
    • C07D405/04Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/38Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D307/52Radicals substituted by nitrogen atoms not forming part of a nitro radical
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    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C07F5/02Boron compounds
    • C07F5/025Boronic and borinic acid compounds

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Abstract

A kind of method that Lapatinib or its pharmaceutically acceptable salt are prepared by novel intermediates, this method are made using 5 bromo furfurals and with 2 nitrobenzoic acids as initiation material by Suzuki coupled reactions.The method of this synthesis Lapatini can reach 32.2% total recovery.

Description

A kind of method and intermediate for preparing Lapatinib
Technical field
The present invention relates to Lapatinib, and in particular to the preparation method and intermediate of Lapatinib, belongs to pharmaceutical chemistry skill Art field.
Background technology
Lapatinib (Lapatinib), entitled N- (the chloro- 4- of 3- ((3- fluorophenyls) methoxyl group) phenyl) -6- (5- of chemistry (((2- (mesyl) ethyl) amino) methyl) -2- furyls) -4- quinazoline amine, structural formula is:
As tyrosine kinase inhibitor, Lapatinib is directed to human epidermal factor growth receptors 2 type (HER2) excessive table The aobvious inhibitory action of Da Youming, has preferable treatment to HER2 positive breast cancer cells, and to trastuzumab air-conditioning breast cancer Effect.
Preparing the method for Lapatinib at present mainly has two classes, and one kind is by building compound (V), is prepared so as to realize Lapatinib.
Such as:
It can be halogen (such as Cl, Br) that above-claimed cpd I, which has easy leaving group X, X,;Commercially available compound I and compound Compound III is made by catalyst coupling reaction in the basic conditions in II, next uses compound III and commercial compound VI or its reactant salt obtain compound IV, and then compound IV can be prepared into compound V;Finally by compound V and chemical combination Thing VII carries out reacting obtained target product Lapatini.The drawbacks of this method, is which employs the expensive chemical combination of market price first Thing II improves holistic cost, has secondly used excess in the step of compound IV synthesizes compound V as initiation material POCl3And Et3N and by the use of toluene as reaction dissolvent, generates substantial amounts of waste gas and waste liquid, not only processing difficulty is also unfavorable for ring Protect, and route total recovery is low.
Another kind of preparation method is to make alkali acetonitrile as solvents in potassium carbonate by the chloro- 4- nitrophenols of 2- and 3- fluoro benzyl bromides Under conditions of react to obtain ether compound into ether by Williamson, then the nitro in the compound through Pt/C hydrogen also Originally it was amine.Then the aniline compound does part in i-PrOH and is condensed with the chloro- 6- iodine quinazolines of 4-, and condensation products therefrom is further With 5- dioxolanes -2- (tributyl tin alkyl)-furans under the reaction condition that DMF makees that solvent PdCl2 (PPh3) 2 is catalyst Stille is carried out to couple to obtain coupling product.The further acidolysis of cyclic ketal of the conjugates obtains aldehyde compound, finally should Aldehyde compound reacts with 2- (mesyl) ethamine obtains end-product drawing pa through sodium triacetoxy borohydride reduction amination again Carry Buddhist nun.This method synthesizes crucial conjugates and employs Stille coupled reactions, and the reaction response activity is not high and result in coupling Product yield is low, and the reaction employs organotin reagent and has severe toxicity to be unfavorable for reaction treatment and ring as raw material, the reagent Border is protected, while the organo-tin compound price is expensive, and route synthesis cost is high, and the route entirety yield is low.
The content of the invention
Lapatinib or the method for its pharmaceutically acceptable salt, this method are prepared it is an object of the invention to provide a kind of The Lapatinib is converted into using compounds (A1).
The object of the present invention is achieved like this:
A kind of to prepare Lapatinib or the method for its pharmaceutically acceptable salt, it, which is included, makes formula A3 compounds:
It is converted into the Lapatinib.
Above-mentioned to prepare Lapatinib or the method for its pharmaceutically acceptable salt, it reacts comprising formula A3 compound or its salts Formula A4 compound or its salts are made:
Formula A4 compound or its salts are made with the reaction of N- (4- (3- fluorine benzyloxy) -3- chlorphenyls) -6- iodine quinazoline -4- amine Formula A5 compound or its salts:
Formula A5 compound or its salts are converted into the Lapatinib.
It is preferred that formula A4 compound or its salts are made in above-mentioned formula A3 compound or its salts reaction
N-BuLi forms nBu2iPrMgLi compounds and compound A-13 halo site with isopropylmagnesium chloride at low temperature React the formula of being made A4 compound or its salts after exchange with trimethylborate again;The low temperature be 0~-20 DEG C, preferably -10~-20 ℃。
Above-mentioned formula A5 compound or its salts can be prepared with the following method:
Above-mentioned N- (4- (3- fluorine benzyloxy) -3- chlorphenyls) -6- iodine quinazoline -4- amine is prepared with the following method:
The chloro- 4- nitrophenols of above-mentioned 2- and 3- fluoro benzyl bromide prepare compound B3 steps, are carried out, preferably in the basic conditions K2CO3Make alkali, acetonitrile is solvent.
Above-mentioned formula B3 prepares the reduction that B4 steps are nitro, preferably Pd/H2, zinc powder reduction.
Above-mentioned formula B1 and oxalyl chloride formula B2.
Above-mentioned formula B2 and B4 makees solvent in isopropanol and formula B5 is made.
Specifically, a kind of method for preparing Lapatinib, using following syntheti c route:
A is K2CO3;B is zinc powder;C is oxalyl chloride;D is isopropanol;E is magnesium sulfate;F is NaBH4
G is bromobenzene;H is isopropylmagnesium chloride/butyl lithium, trimethylborate;I is palladium/potassium carbonate;J is Pd (OH)2/ C, H2
Technique effect:
The present invention prepares Lapatinib using noval chemical compound A1 or A3, A4, A5, opens a brand-new synthesis Lapatinib Route.The present invention uses commercially available 5-bromofuran-2-carboxaldehyde and 2- (mesyl) ethylamine salt as initiation material with suziki- Miyaura coupled reactions react to obtain target product Lapatini as key point by 6 steps altogether, and total recovery reaches 32.2%, compared to the conventional method present invention with the cheap advantage of high efficiency and initiation material, and do not need large scale industry to set It is standby, it is simple to operate, it is adapted to industrialized production.
Embodiment
In order that the purpose of the present invention and technical scheme are clearer, the preferred embodiments of the present invention are carried out below detailed Description.To illustrate that:Following examples are served only for that the present invention is further detailed, and it is not intended that to this hair The limitation of bright protection domain.Those skilled in the art according to the present invention the above make some it is nonessential improvement and Adjustment belongs to protection scope of the present invention.
The preparation of the chloro- 6- iodine quinazolines (compound B2) of 4-:
The anhydrous DMF3.2ml of drying is added in the DCE that 10ml is dried, while the reaction system is placed in sub-cooled 0 ° of stirring in groove, then oxalyl chloride 5.3ml (60mmol) is added in the anhydrous DCE of 25ml dryings and is configured to solution, this is molten Liquid is slowly instilled in appeal reaction system dropwise, is kept stirring for, and whole process is protected with nitrogen.Reaction system is found during dropwise addition In have white solid precipitation, after dripping off will reaction remove sub-cooled groove, be stirred at room temperature 5 minutes.Then by the (5.0g of compound 1 Reaction system 18mmol) is added, reaction is moved into oil bath pan temperature rising reflux after adding reacts 1 hour, whole nitrogen protection.1 is small When after reaction removed into oil bath pan be kept stirring for being cooled to room temperature, add the stirring of about 100ml frozen water and extracted with DCM (100mL × 3) Liquid separation, water layer extract liquid separation with DCM again, merge organic phase anhydrous sodium sulfate drying, are finally concentrated under reduced pressure to give light gray Solid 4.36g (yield 92.7%).1H NMR (400MHz, CDCl3) δ 9.06 (s, 1H), 8.65 (d, J=1.9Hz, 1H), 8.20 (dd, J=8.8,1.9Hz, 1H), 7.79 (d, J=8.8Hz, 1H).
The preparation of 4- (3- fluorine benzyloxy) -3- chloronitrobenzenes (compound B3):
By the chloro- 4- nitrophenols (9.02g, 52mmol) of 2-, 3- fluoro benzyl bromides (9.85g, 52mmol) and acetonitrile 90ml add Enter in reaction bulb, at the same potassium carbonate (7.0g, 57mmol) is added thereto two hours of 60 ° of back flow reactions under nitrogen protection and Room temperature is down in reaction afterwards, and 80ml water is poured into reaction bulb, is filtered under diminished pressure to obtain solid, filter cake is washed twice with ethyl acetate (50ml × 2), final solid product have (13.16g, yield 95%).1H NMR (400MHz, DMSO) δ 8.35 (d, J= 2.8Hz, 1H), 8.26 (dd, J=9.2,2.8Hz, 1H), 7.54-7.43 (m, 2H), 7.36-7.29 (m, 2H), 7.22 (ddd, J =10.9,5.3,1.4Hz, 1H), 5.41 (s, 2H).
The preparation of 4- (3- fluorine benzyloxy) -3- chloroanilines (compound B4):
By compound B3 ((8.70g, 25.1mmol) stirring and dissolving in 150ml ethanol, add zinc powder (10.10g, Reaction 154mmol) is moved into oil bath pan and is heated to 60 ° of stirring reactions, while ammonium chloride (3.30g, 61.8mmol) water is added dropwise Solution 30ml, the temperature is kept to stir after dripping 12 hours.Zinc powder is filtered under diminished pressure into removing, and then filtrate decompression is concentrated to give Light gray solid, the solid wash last product 7.63g (yield 98%) with ether1H NMR (400MHz, CDCl3)δ7.69 (td, J=8.0,5.8Hz, 1H), 7.59-7.52 (m, 2H), 7.36 (td, J=8.4,2.3Hz, 1H), 7.13 (dd, J=7.4, 5.7Hz, 2H), 6.86 (dd, J=8.6,2.8Hz, 1H), 5.39 (s, 2H), 3.85 (s, 2H).
The preparation of N- (4- (3- fluorine benzyloxy) -3- chlorphenyls) -6- iodine quinazoline -4- amine (compound B5):
Compound B2 (5.70g, 19.70mmol) and compound B4 (4.90g, 19.70mmol) is added in single port bottle, together When add isopropanol 150mml heated overnight at reflux.React and temperature of reaction system is down to room temperature, solid product precipitation after terminating Get off, solution press filtration obtains filter cake, filter cake is dried to obtain product 9.10g (yield 90.72%), the product purity is high without pure Change.1H NMR (400MHz, DMSO) δ 9.86 (s, 1H), 8.96 (d, J=1.7Hz, 1H), 8.62 (s, 1H), 8.12 (dd, J= 8.7,1.8Hz, 1H), 8.03 (d, J=2.6Hz, 1H), 7.75 (dd, J=9.0,2.6Hz, 1H), 7.57 (d, J=8.7Hz, 1H), 7.47 (dd, J=8.1,6.0Hz, 1H), 7.37-7.25 (m, 2H), 7.19 (d, J=2.2Hz, 1H), 5.27 (s, 2H)
(E) preparation of-N- ((5- bromine furans -2- bases) methylene) -2- (methyl sulphonyl) ethamine (compound A1):
In there-necked flask add 5-bromo-2-furaldehyde (5.00g, 28.56mmol) and 2- (mesyl) ethylamine hydrochloride (5.01g, Anhydrous magnesium sulfate (3.42g, 28.50mmol) and the DCM75ml dried 31.38mmol) are then added -5 ° in sub-cooled groove It is kept stirring for two hours, whole nitrogen protection;Triethylamine (4.75946.90mmol) is then added dropwise in the mixture, at -5 ° It is kept stirring for two hours.Decompression, which filters, after reaction terminates removes magnesium sulfate, after filtrate washed once with saturated sodium-chloride water solution Liquid separation, organic phase anhydrous sodium sulfate drying, finally it is concentrated under reduced pressure to give light yellow solid 7.50g (yield 94.25%)1H NMR (400MHz, CDCl3) δ 7.38 (s, 1H), 7.08 (d, J=15.0Hz, 1H), 6.80 (d, J=15.0Hz, 1H), 3.89 (t, J=16.0Hz, 2H), 2.90 (t, J=15.9Hz, 2H), 2.80 (s, 3H).
The preparation of N- ((5- bromine furans -2- bases) methyl) -2- (methyl sulphonyl) ethamine (compound A2):
Compound A1 (7.54g, 26.9mmol) is added in single port bottle while with dry anhydrous methanol 150ml at -4 ° Stirring and dissolving, then add after sodium borohydride (4.07g, 107.6mmol) has been loaded and mixture is warmed to room temperature and keeps room temperature Stirring one hour.Mixture is cooled to 0 °, saturated sodium bicarbonate 60ml is instilled dropwise, then depressurized the solid in reaction Filter, filtrate further washs filter cake with DCM (50ml × 3), and merging organic phase is washed with saturated sodium-chloride water solution once divides afterwards Liquid, organic phase anhydrous sodium sulfate drying, finally it is concentrated under reduced pressure to give product 7.5g (yield 99.33%)1H NMR (400MHz, cdcl3) δ 6.24 (d, J=3.2Hz, 1H), 6.19 (d, J=3.2Hz, 1H), 3.77 (s, 2H), 3.14 (d, J=2.5Hz, 4H), 3.00 (s, 3H), 1.84 (s, 1H).
The preparation of N- benzyls-N- ((5- bromine furans -2- bases) methyl) -2- (methyl sulphonyl) ethamine (compound A-13):
Compound A2 (7.00g, 25.00mmol) sodium carbonate (5.29g, 50.00mmol) and 50ml are added in reaction bulb DMF dissolves, and then adds bromobenzene (4.27g, 30.00mmol) and is warming up to 140 °, is kept stirring for reaction 3 hours.Reactant is dissolved in Then organic layer is taken in ethyl acetate with saturated common salt water washing point, and organic layer after anhydrous sodium sulfate drying with being concentrated under reduced pressure to give Light yellow solid 8.91g (yield 96.53%).1H NMR (400MHz, CDCl3) δ 7.39-7.29 (m, 5H), 6.28 (d, J= 3.2Hz 1H), 6.22 (d, J=3.2Hz, 1H), 3.67 (d, J=9.9Hz, 4H), 3.08 (d, J=1.9Hz, 4H), 2.98 (s, 3H).The preparation of 5- ((benzyl (2- (methyl sulphonyl) ethyl) amino) methyl) furans -2- ylboronic acids (compound A4):
Dry THF30ml is added in there-necked flask as solvent, while does nitrogen and protects and there-necked flask is moved into low temperature 0 ° is kept stirring in cooling bath.Then it is separately added into isopropylmagnesium chloride 3.75ml (7.50mmol) and butyl lithium 9.73ml (15mmol) is stirred 15 minutes, and then interior temperature drop to -20 ° of dropwise additions is dissolved the mixture in sub-cooled groove by THF Compound A-13 (5.4g, 15mmol) is kept for -20 ° stir 30 minutes, and trimethylborate 8.96g (60mmol) is then added dropwise.It is added dropwise After temperature is gradually risen to 0 °, keep the temperature stirring reaction two hours.The mixture is quenched with acetic acid after reaction terminates And add the dilution of 50ml water, aqueous layer with ethyl acetate (50ml × 3) extract and separate organic phase, then organic phase saturated aqueous common salt Separation organic phase anhydrous sodium sulfate drying is washed once, decompression is concentrated to give semi-solid product, the product Column methods (elution polarity DCM/EA=2/1) obtains the pure 3.10g of compound 9 (yield 63.39%).1H NMR (400MHz, DMSO) δ 7.31-7.13 (m, 5H), 6.12 (s, 1H), 3.76 (s, 2H), 3.60 (s, 2H), 3.15 (d, J=3.9Hz, 3H), 3.03 (s, 1H), 2.80 (s, 3H), 1.55 (s, 2H)
The preparation of compound A-45:
It is separately added into compound A4 (5.9017.49mmol) in 500ml reaction bulb, compound B5 (7.90g, 15.62mmol), palladium (0.29g1.3mmol), potassium carbonate (4.83g, 22.40mmol), and add absolute ethyl alcohol 150ml and Anhydrous THF150ml is as solvent, by two hours of the mixture heating reflux reaction.The mixture is then down to room temperature, nothing The decompression of machine salt, which filters, to be separated and washs filter cake with 50ml ethanol and 50mlTHF, then abandons inorganic salts filter cake.Filtrate is merged and washed Wash liquid to move into the 1L single port bottle with dropping funel, 300ml water (about with one hour) is slowly added dropwise, gradually there is consolidating for yellow Body separates out, and holding is stirred at room temperature 1.5 hours, and yellow solid is depressurized suction filtration and separates and washed once with 50ml frozen ethanols, Gu Body enters decompression 60 ° of dryings of baking oven and obtains yellow solid in 16 hours.The solid refines (eluant, eluent DCM/EA=with Column methods 5/1) pure target product 8.97g (yield 90.42%) is obtained.1H NMR (400MHz, CDCl3) δ 8.67 (s, 1H), 8.59 (s, 1H), 8.42 (s, 1H), 7.89 (dt, J=12.0,8.8Hz, 2H), 7.68 (dd, J=8.8,2.4Hz, 1H), 7.39-7.29 (m, 3H), 7.25-7.18 (m, 1H), 7.00 (dd, J=18.3,8.7Hz, 1H), 6.73 (d, J=3.2Hz, 1H), 6.27 (d, J =3.2Hz, 1H), 5.15 (s, 1H), 3.78 (s, 1H), 3.68 (s, 1H), 3.45-3.26 (m, 2H), 2.92 (s, 2H)
The preparation of end-product Lapatini:
Compound A-45 (5.00g, 7.61mmol) is dissolved in the solution that concentration 0.1M is configured in methanol, adds The palladium dydroxide (20%) of (0.11g, 0.76mmol) carbon load is used as catalyst, gives Hydrogen Vapor Pressure about 50-55psi reaction Environment, reaction is stirred at room temperature.TLC monitors reaction process, and raw material point is filtered under diminished pressure catalyst after disappearing and methanol washs filter cake, Merging filtrate cleaning solution is dried under reduced pressure to obtain grease, and the grease purifies (eluant, eluent DCM/EA=3/1) through post and obtains pure drawing Iwan Buddhist nun 3.61g (81.67%), purity 99.3%.1H NMR (300MHz, d6-DMSO):δ 2.98 (t, J=6.75Hz, 1H), 3.04 (s, 1H), 3.29 (t, J=6.6Hz, 1H), 3.83 (s, 1H), 5.28 (s, 1H), 6.50 (d, J=3.0Hz, 1H), 7.08 (d, J=3.3Hz, 1H), 7.20 (m, 1H), 7.33 (m, 4H), 7.48 (m, 1H), 7.76 (m, 1H), 7.80 (d, J= 9Hz, 1H), 8.04 (d, J=2.75Hz, 1H), 8.17 (dd, J=8.7Hz, J=1.8Hz, 1H), 8.56 (s, 1H), 8.75 (d, J=1.8Hz, 1H).
The present invention synthesizes end-product Lapatini, total recovery 32.2%, significantly larger than existing preparation Lapatini by 6 steps Method, and purity of the present invention reaches more than 99.0%, in end-product compound A1-A5 residual quantity be respectively less than thousand/ One, it is adapted to medicinal requirements.

Claims (7)

1. a kind of prepare Lapatinib or the method for its pharmaceutically acceptable salt, it includes formula A3 compound or its salts reaction system It is standby to obtain formula A4 compound or its salts;Formula A4 compound or its salts and N- (4- (3- fluorine benzyloxy) -3- chlorphenyls) -6- iodine quinoline azoles Formula A5 compound or its salts are made in the reaction of quinoline -4- amine;Formula A5 compound or its salts are converted into the Lapatinib;
The formula A5 compound or its salts are prepared with the following method:
2. the method as described in claim 1, it is characterised in that:Formula A4 chemical combination is made in the formula A3 compound or its salts reaction Thing or its salt form nBu2iPrMgLi compounds and compound A-13 halo position for n-BuLi at low temperature and isopropylmagnesium chloride Point reacts the formula of being made A4 compound or its salts with trimethylborate again after exchanging;The low temperature is 0~-20 DEG C.
3. the method as described in claim 1, it is characterised in that:N- (4- (3- fluorine benzyloxy) -3- the chlorphenyls) -6- iodine quinolines Oxazoline -4- amine is prepared with the following method:
4. the method for preparing Lapatinib as claimed in claim 1, using following syntheti c route:
Wherein, a K2CO3;B is zinc powder;C is oxalyl chloride;D is isopropanol;E is magnesium sulfate;F is NaBH4;G is bromomethyl benzene;h For isopropylmagnesium chloride/butyl lithium, trimethylborate;I is palladium/potassium carbonate;J is Pd (OH)2/ C, H2
5. a kind of formula A1 compounds, structure are as follows:
6. a kind of formula A3 compounds, structure are as follows:
7. a kind of formula A4 compounds, structure are as follows:
CN201510593037.4A 2015-09-12 2015-09-12 A kind of method and intermediate for preparing Lapatinib Expired - Fee Related CN105085496B (en)

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CN106631715A (en) * 2016-12-22 2017-05-10 山东轩德医药科技有限公司 Preparation method of 3-chloro-4-(3-fluorobenzyloxy) aniline
CN108285421A (en) * 2018-01-26 2018-07-17 黑龙江鑫创生物科技开发有限公司 A kind of method of micro passage reaction synthesis lapatinib intermediate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001004111A1 (en) * 1999-07-09 2001-01-18 Glaxo Group Limited Anilinoquinazolines as protein tyrosine kinase inhibitors
CN102295638A (en) * 2010-06-24 2011-12-28 齐鲁制药有限公司 Novel method for preparing lapatinib
CN102675297A (en) * 2012-04-17 2012-09-19 武汉人福医药集团股份有限公司 Preparation method of Lapatinib
CN103483324A (en) * 2012-06-12 2014-01-01 武汉人福医药集团股份有限公司 New preparation method of lapatinib
CN103923070A (en) * 2013-01-14 2014-07-16 意大利合成制造有限公司 Efficient Process For The Preparation Of Lapatinib And Salts Thereof By Means Of New Intermediates

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001004111A1 (en) * 1999-07-09 2001-01-18 Glaxo Group Limited Anilinoquinazolines as protein tyrosine kinase inhibitors
CN102295638A (en) * 2010-06-24 2011-12-28 齐鲁制药有限公司 Novel method for preparing lapatinib
CN102675297A (en) * 2012-04-17 2012-09-19 武汉人福医药集团股份有限公司 Preparation method of Lapatinib
CN103483324A (en) * 2012-06-12 2014-01-01 武汉人福医药集团股份有限公司 New preparation method of lapatinib
CN103923070A (en) * 2013-01-14 2014-07-16 意大利合成制造有限公司 Efficient Process For The Preparation Of Lapatinib And Salts Thereof By Means Of New Intermediates

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