CN103570754A - Preparation method of N-(4-(3-amino-1H-indazol-4-yl) phenyl)-N'-(2-fluoro-5-methylphenyl) urea and intermediate thereof - Google Patents

Preparation method of N-(4-(3-amino-1H-indazol-4-yl) phenyl)-N'-(2-fluoro-5-methylphenyl) urea and intermediate thereof Download PDF

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CN103570754A
CN103570754A CN201210279813.XA CN201210279813A CN103570754A CN 103570754 A CN103570754 A CN 103570754A CN 201210279813 A CN201210279813 A CN 201210279813A CN 103570754 A CN103570754 A CN 103570754A
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acid ester
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CN103570754B (en
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安晓霞
吕峰
闫丽
王关兴
李慧超
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Chifeng Pharmaceutical Co ltd
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SHANGHAI ACEBRIGHT PHARMACEUTICALS GROUP Co Ltd
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Abstract

The invention provides a preparation method of N-(4-(3-amino-1H-indazol-4-yl) phenyl)-N'-(2-fluoro-5-methylphenyl) urea and an intermediate thereof. Specifically, the invention provides a preparation method of a borate ester compound as shown in a formula I, and the preparation method comprises the following steps: enabling a compound as shown in a formula III to react with a compound as shown in a formula IV to generate a compound as shown in a formula V, and enabling the compound as shown in the formula V to react with a boron reagent to generate the compound as shown in the formula I. The method has the characteristics of convenience in reaction, easiness in obtainment of the intermediate, high yield, high product purity of above 98.5%, low cost of raw materials and the like, and is suitable for industrial application.

Description

The preparation method of N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea and intermediate thereof
Technical field
The invention belongs to the synthetic field of medicine, particularly, the present invention relates to the preparation method of a kind of N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea and intermediate boric acid ester compound thereof.
Background technology
Vasculogenesis is the physiological process that capillary vessel grows out from already present blood vessel network, nutrition supply in the time of can meeting tissue generation, for the maintaining or grow most importantly of tumour, therefore, angiogenesis inhibitor is considered to the effective means of cancer therapy.The receptor tyrosine kinase of blood vessel endothelium albumen (RTK) has vital role in angiogenesis, can be used as antitumour drug action target spot.
Abbott has developed a series of RTK inhibitor (WO2004113304A1), comprise indazole, benzoisoxazole and benzisothiazole kinase inhibitors, they can suppress all vascular endothelial growth factor receptors (VEGFR) and PDGF acceptor (PDGFR) family's Tyrosylprotein kinase (TK) activity in the horizontal specificity of nmole, wherein, N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea is exactly to have one of candidate compound of DEVELOPMENT PROSPECT most.
N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea (Linifanib, ABT-869) structural formula is:
Figure BDA00001983296300011
Preclinical study result shows, its anti-tumor activity is remarkable, in different animals, all show good pharmacokinetics character, carrying out at present the multinomial clinical trial of this product, to evaluate it to Several Kinds of Malignancy, comprise the curative effect of kidney, liver cancer, colorectal cancer, mammary cancer, nonsmall-cell lung cancer and acute myeloid leukemia.
2009, Albert W.Kruger etc., at document Org.Pro.Res.Dev.2009, disclosed following synthetic route in 13,1419-1425:
Figure BDA00001983296300021
In this route, obtain midbody compound 4 (be the present invention will be synthetic one of compound---formula VI compound) raw material 4-amino-benzene boric acid pinacol ester 2 used and the fluoro-5-methyl of isocyanic acid 2-phenyl ester 3 expensive and be not easy to obtain, raw materials cost is high, is not suitable for suitability for industrialized production.
In order to solve the problem of raw material 4-amino-benzene boric acid pinacol ester, bang dragon is waited the pharmaceutical chemistry magazine > > in < < China, 22 (1), 26-28,2012.In document, reported the route of following synthetic ABT-869:
Figure BDA00001983296300022
Above-mentioned route is synthetic 4-amino-benzene boric acid pinacol ester voluntarily, but will experience 5 step reactions, and route is long.The yield that obtains intermediate 4 only has 38% left and right, so be not suitable for equally suitability for industrialized production.
In sum, efficient preparation N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of the 2-) urea of low in the urgent need to cost of development, the applicable suitability for industrialized production in this area and the technique of similar compound.
Summary of the invention
Object of the present invention is just to provide a kind of method of preparing N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea (ABT-869) and intermediate thereof of novelty, and this technique has solved prior art because of expensive raw material price or route is long, yield is low causes the problem that production cost is high.
A first aspect of the present invention provides a kind of preparation method of formula I compound, and the method comprises the following steps:
1) under alkali exists, formula III compound reacts with formula IV compound, forms formula V compound;
2) under the existence of alkali and palladium catalyst, formula V compound reacts with borane reagent, forms formula I compound;
Figure BDA00001983296300031
Above-mentioned various in,
R1 is one or more (as 1,2,3, the 4 or 5) substituting group that is positioned at optional position on phenyl ring, and each R1 can be identical or different and independently selected from lower group: halogen, C 1-6alkyl, C 1-6haloalkyl or C 1-6alkoxyl group;
R2 and R3 are hydroxyl or C independently 1-6alkoxyl group, C 1-6acyloxy, or R2 and R3 jointly form and replace or unsubstituted C 1-8alkane dioxy base, C 6-10virtue dioxy base, or C 1-8cycloalkanes dioxy base; Wherein said replacement is to have one or more (as 1-5 or 1-3) to be selected from the substituting group of lower group: C 1-6alkyl, halogen, phenyl, benzyl ,-CH 2-, C 1-6alkoxyl group, C 1-6acyl group, C 1-6acyloxy, C 1-6carbalkoxy;
R4 is selected from lower group: H, F, Cl, Br, I.
In another preference, R2 and R3 are hydroxyl or C independently 1-4alkoxyl group.
In another preference, R1 is two identical or different substituting groups that are positioned at phenyl ring optional position, and described substituting group is selected from: F, Cl, Br, I, C 1-6alkyl; And/or
R2 and R3 form replacement or unsubstituted C jointly 2-8alkane dioxy base, the definition of wherein said replacement is as previously mentioned; And/or
R4 is Cl or Br.
In another preference, during as substituting group, described phenyl comprises and replacing or unsubstituted phenyl, and described benzyl comprises and replacing or unsubstituted benzyl, and described replacement refers to have one or more (as 1-5 or 1-3) and is selected from the substituting group of lower group: C 1-6alkyl, halogen, C 1-6alkoxyl group, OH, NH 3.
In another preference, described formula I compound is following structure:
Figure BDA00001983296300041
In another preference, step 1) and step 2) described in alkali be selected from organic bases or mineral alkali;
Preferably, described organic bases is selected from lower group: triethylamine, diethylamine, diisopropylethylamine, pyridine or its combination; More preferably, described alkali is triethylamine or diisopropylethylamine;
In another preference, described mineral alkali is selected from sodium-acetate, Potassium ethanoate, SODIUM PHOSPHATE, MONOBASIC, Sodium phosphate dibasic, potassium primary phosphate, dipotassium hydrogen phosphate, sodium carbonate, sodium bicarbonate, salt of wormwood, saleratus, sodium hydroxide, potassium hydroxide or its combination.
In another preference, described alkaline reagents is selected from sodium-acetate, Potassium ethanoate, sodium bicarbonate, salt of wormwood, or its combination.
In another preference, step 1) and step 2) alkali be identical.
In another preference, step 1) in, the consumption of alkali and the mol ratio of formula III compound are 0.5~5:1, are more preferably 2~3.5:1.
In another preference, step 1) mol ratio of Chinese style IV compound and formula III compound is 0.2~1:1, preferably 0.8~1:1.
In another preference, step 1) in, temperature of reaction is-20~100 ℃, and more preferably, temperature of reaction is-10~50 ℃.
In another preference, step 1) in, the reaction times is 0.5~24 hour, more preferably 1~12 hour.
In another preference, step 2) borane reagent described in is selected from lower group: titanium dioxide two boron, tetramethoxy hypoboric acid ester, tetraethoxy hypoboric acid ester, four n-butoxy hypoboric acid esters, tetraisopropoxide hypoboric acid ester, four positive propoxy hypoboric acid esters, duplex pyrocatechol boric acid ester, duplex tetramethyl ethylene ketone boric acid ester, connection boric acid DOPCP, two [(-) pinine glycol] two boron esters, two (di-isopropyl-L-TARTARIC ACID diethyl ester) hypoboric acid ester, two (1S, 2S, 3R, 5S) (+)-pinine glycol two boron esters, duplex (2-methyl-2, 4-pentanediol) boric acid ester, duplex (2, 4-dimethyl-2, 4-pentanediol) boric acid ester, duplex (D-diethyl tartrate) boric acid ester, or its combination.
In another preference, described borane reagent is selected from duplex pyrocatechol boric acid ester, duplex tetramethyl ethylene ketone boric acid ester, duplex (D-diethyl tartrate) boric acid ester; It is more preferably duplex tetramethyl ethylene ketone boric acid ester.
In another preference, the mol ratio of the consumption of described borane reagent and formula V compound is 0.8~5:1, preferably 1~1.5:1.
In another preference, step 2) consumption of alkali and the mol ratio of formula V compound described in are 0.5~5:1, preferably 2~3.5:1; And/or
Step 2) palladium catalyst described in is selected from 1,1 '-bis-(diphenylphosphine) ferrocene, four triphenyl phosphorus palladiums, palladium carbon, palladium, or its combination, preferably 1,1 '-bis-(diphenylphosphine) ferrocene, four triphenyl phosphorus palladiums; And/or
The mol ratio of the consumption of the palladium catalyst step 2) and formula V compound is 0.01~0.2:1, is preferably 0.02~0.08:1.
In another preference, step 2) in, temperature of reaction is 20~150 ℃, preferably 60~100 ℃.
In another preference, step 2) in, the reaction times is 0.5~24 hour, more preferably 1~12 hour.
In another preference, the method comprises the steps:
I) under alkali exists, the fluoro-5-methyl of isocyanic acid 2-phenyl ester reacts with para-bromoaniline, forms formula VII compound; With
Ii), in inert solvent, under alkali and palladium catalyst existence, formula VII compound reacts with borane reagent, forms formula VI compound:
Figure BDA00001983296300051
In another preference, step I) temperature of reaction is-10~50 ℃.
In another preference, step I i) temperature of reaction is 60~100 ℃.
In another preference, step I) alkali in is diisopropylethylamine.
In another preference, step I i) in, inert solvent is DMF (DMF), dimethyl sulfoxide (DMSO) or its combination.
In another preference, step I i) in, the mol ratio of VII compound and borane reagent, alkali, palladium catalyst is 1:0.8~5:0.5~5:0.01~0.2; It is more preferably 1:1~1.5:2~3.5:0.02~0.08.
In another preference, described method also comprises by following steps prepares formula III compound:
1a) in inert solvent, under alkali exists, formula II compound reacts with triphosgene, forms formula III compound:
Above-mentioned various in, R1 is the one or more substituting groups that are positioned at optional position on phenyl ring, each R1 can be identical or different and independently selected from lower group: halogen, C 1-6alkyl, C 1-6haloalkyl or C 1-6alkoxyl group.
In another preference, step 1a) in, described alkali is organic bases (as diisopropylethylamine etc.).
In another preference, step 1a) in, described inert solvent is organic solvent, is selected from esters solvent, halogenated hydrocarbon solvent, ether solvent, aromatic hydrocarbon solvent or its combination; More preferably, described organic solvent is ethyl acetate, methylene dichloride, tetrahydrofuran (THF), or its combination.
A second aspect of the present invention, provides a kind of preparation method of formula A compound, comprises step:
1) under alkali exists, formula III compound reacts with formula IV compound, forms formula V compound;
2) under the existence of alkali and palladium catalyst, formula V compound reacts with borane reagent, forms formula I compound;
Above-mentioned various in,
R1 is the one or more substituting groups that are positioned at optional position on phenyl ring, and each R1 can be identical or different and independently selected from lower group: halogen, C 1-6alkyl, C 1-6haloalkyl or C 1-6alkoxyl group;
R2 and R3 are hydroxyl or C independently 1-6alkoxyl group, C 1-6acyloxy, or R2 and R3 jointly form and replace or unsubstituted C 1-8alkane dioxy base, C 6-10virtue dioxy base, or C 1-8cycloalkanes dioxy base; Wherein said replacement is to have one or more substituting groups that are selected from lower group: C 1-6alkyl, halogen, phenyl, benzyl ,-CH 2-, C 1-6alkoxyl group, C 1-6acyl group, C 1-6acyloxy, C 1-6carbalkoxy;
R4 is selected from lower group: H, halogen;
3) formula I compound is reacted with 3-amino-4-iodine indazole, forms formula A compound,
Figure BDA00001983296300071
In formula, R is
Figure BDA00001983296300072
and X is one or more (as 1,2,3, the 4 or 5) substituting group that is positioned at optional position on phenyl ring, each R1 can be identical or different and independently selected from lower group: halogen, C 1-6alkyl, C 1-6haloalkyl or C 1-6alkoxyl group.
More preferably, X is H, o-F, m-F, p-F, o-Me, m-Me, P-Me, m-Et, m-Cl, m-Br, m-CF 3, m-OH, 2-F-5-Me, 4-F-3-Me, 3-F-Me, 2-F-5-CF 3, 2-Cl-5-Cl, 2-Me-4-Me, 3-F-4-OMe, 2-Br-4-Me, 2-Me-5-CF 3.
In another preference, described formula I compound is formula VI compound, and formula A compound is ABT-869.
In a third aspect of the present invention, a kind of N-(4-(3-amino-1 h-indazole-4-yl) phenyl) preparation method of-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea is provided, comprise step:
Formula VI compound is reacted with 3-amino-4-iodine indazole, forms N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea:
Figure BDA00001983296300073
Described method also comprises: with the method preparation formula VI compound described in first aspect present invention.
In should be understood that within the scope of the present invention, above-mentioned each technical characterictic of the present invention and can combining mutually between specifically described each technical characterictic in below (eg embodiment), thus form new or preferred technical scheme.As space is limited, at this, tire out and state no longer one by one.
Embodiment
The inventor is through extensive and deep research, developed first a kind of by following reaction, efficiently, the technique of preparation I compound at low cost:
Figure BDA00001983296300081
The formula I compound making by this technique can be used as the intermediate of chemosynthesis, for the synthesis of medicine.Representational medicine comprises (but being not limited to): disclosed indazole, benzoisoxazole and benzisothiazole kinase inhibitors in WO2004113304A1.
The formula VI intermediate (a kind of preferred formula I compound) of take is example, by this formula VI intermediate, can prepare low-cost, efficiently compd A BT-869, thereby is applicable to very much suitability for industrialized production.Other formulas I intermediate, by leavings group-B (R2) similar reaction (R3), can prepare the similar formula A compound with ABT-869.
Term
As used in the present invention, term " ABT-869 ", " compd A BT-869 " or " Linifanib " are used interchangeably, and all refer to compound N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea or its pharmacy acceptable salt.
As used herein, term " C 1-6alkyl " refer to have the straight or branched alkyl of 1-6 carbon atom, for example methyl, ethyl, propyl group, sec.-propyl, butyl, isobutyl-, sec-butyl, the tertiary butyl or similar group.
Term " C 1-6alkoxyl group " refer to have the straight or branched alkoxyl group of 1-6 carbon atom, for example methoxyl group, oxyethyl group, propoxy-, isopropoxy, butoxy, isobutoxy, sec-butoxy, tert.-butoxy or similar group.
Term " C 1-6acyl group " refer to have the acyl group of 1-6 carbon atom, for example formyl radical, ethanoyl, propionyl, isopropyl acyl group, butyryl radicals, isobutyryl, secondary butyryl radicals, tertiary butyryl radicals or similar group.
Term " C 1-6acyloxy " refer to have the acyloxy of 1-6 carbon atom, for example methanoyl, acetoxyl group, propionyloxy, isopropyl acyloxy, butyryl acyloxy, isobutyl acyloxy, secondary butyryl acyloxy, tertiary butyryl acyloxy or similar group.
Term " C 1-6carbalkoxy " refer to have the straight or branched carbalkoxy of 1-6 carbon atom, for example methoxycarbonyl, ethoxycarbonyl, the third oxygen carbonyl, isopropyl oxygen carbonyl, butoxy carbonyl, isobutyl boc, secondary butoxy carbonyl, tertbutyloxycarbonyl or similar group.
Term " halogen " refers to fluorine, chlorine, bromine or iodine.Term " halo " refers to the group being replaced by identical or different one or more above-mentioned halogen atom, for example trifluoromethyl, pentafluoroethyl group or similar group.
Term " C 1-8alkane dioxy base " refer to have the straight or branched alkane dioxy base of 1-8 carbon atom, as-OC 1-8alkyl O-,-OCH 2cH 2o-,-OCH 2cH 2cH 2o-,-OCH 2cH (CH 3) CH 2o-,-OCH 2cH (CH 3) CH (CH 3) CH 2o-,-OCH 2c (CH 3) 2cH 2o-or similar group.
Term " C 1-8cycloalkanes dioxy base " refer to have cycloalkanes dioxy base or the bridged ring alkane dioxy base of 1-8 carbon atom, as 1,2-dioxy basic ring hexane, 1,3-dioxy basic ring hexane, (-) pinane dioxy base
Figure BDA00001983296300091
(1S, 2S, 3R, 5S) (+)-pinane dioxy base
Figure BDA00001983296300092
or similar group.
Term " phenyl " comprises phenyl unsubstituted and that replace, wherein replaces and refers to that on phenyl ring, one or more hydrogen atoms are replaced by halogen atom, C 1-6alkyl, C 1-6alkoxyl group or similar group.
Term " C 6-10virtue dioxy base " refer to have the fragrant dioxy base of 6-10 carbon atom, as 1,2-dioxy base benzene, 1,2-dioxy base naphthalene or similar group.
Term " BTC " refers to triphosgene, and molecular formula is C 3h 6o 3.
Term " esters solvent " refers to have the ester class organic solvent of 2-20 individual (preferably 2-10) carbon atom, for example methyl acetate, ethyl acetate, propyl acetate, butylacetate, isopropyl acetate, isobutyl acetate, pentyl acetate, hexyl acetate, heptyl acetate, decyl acetate, glycol diacetate, or similar solvent.
Term " ether solvent " refers to have the straight or branched alkoxyl group of 2-20 individual (preferably 2-10) carbon atom, for example ether, propyl ether, isopropyl ether, ethyl n-butyl ether, di-n-butyl ether, diamyl ether, tetrahydrofuran (THF), oxyethane, propylene oxide, 1,3-dioxolane or similar solvent.
Preparation method
Shown in general formula of the present invention (I), compound or compd A BT-869 can make by following method.Yet should be understood that hereinafter given method actual conditions, such as the amount of reactant, solvent, alkali, compound used therefor, temperature of reaction, reaction required time etc., is exemplary not from the limited effect.The compounds of this invention can also be optionally by describe in this manual or various synthetic method known in the art combine and make easily, such combination can be easy to carry out by those skilled in the art in the invention.
In preparation method of the present invention, each reaction is conventionally in inert solvent, and temperature of reaction is carried out to reflux temperature (preferably-10 ℃ to 100 ℃) for-20 ℃.Reaction times is generally 0.1-24 hour, is preferably 0.5-18 hour.
The preparation of formula I compound
Formula I compound can be prepared as follows:
Figure BDA00001983296300101
Under alkali exists, formula III compound reacts with formula IV compound, forms formula V compound;
Then, under the existence of alkali and palladium catalyst, formula V compound reacts with borane reagent, forms formula I compound.
Raw material formula III compound and formula IV compound can be prepared maybe and can be bought and obtain by ordinary method.
In the present invention, representational borane reagent comprises (but being not limited to): titanium dioxide two boron, tetramethoxy hypoboric acid ester, tetraethoxy hypoboric acid ester, four n-butoxy hypoboric acid esters, tetraisopropoxide hypoboric acid ester, four positive propoxy hypoboric acid esters, duplex pyrocatechol boric acid ester, duplex tetramethyl ethylene ketone boric acid ester, connection boric acid DOPCP, two [(-) pinine glycol] two boron esters, two (di-isopropyl-L-TARTARIC ACID diethyl ester) hypoboric acid ester, two (1S, 2S, 3R, 5S) (+)-pinine glycol two boron esters, duplex (2-methyl-2, 4-pentanediol) boric acid ester, duplex (2, 4-dimethyl-2, 4-pentanediol) boric acid ester, duplex (D-diethyl tartrate) boric acid ester, or its combination.
Preferably, described borane reagent is selected from duplex pyrocatechol boric acid ester, duplex tetramethyl ethylene ketone boric acid ester, duplex (D-diethyl tartrate) boric acid ester; It is more preferably duplex tetramethyl ethylene ketone boric acid ester.
The preparation of compd A BT-869
Compd A BT-869 can pass through intermediate formula VI compound, is prepared as follows:
Formula VI compound is reacted with 3-amino-4-iodine indazole, forms N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea:
Figure BDA00001983296300102
Compared with prior art, the present invention has following advantage:
1, the inventive method can obtain N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea key intermediate boric acid ester compound easily.
2, method yield of the present invention is high.
3, the inventive method can make highly purified ABT-869 easily, and product purity can reach more than 98%.
4, raw materials cost is low, is applicable to suitability for industrialized production.
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.The experimental technique of unreceipted actual conditions in the following example, conventionally according to normal condition, or the condition of advising according to manufacturer.Unless otherwise indicated, otherwise per-cent and umber calculate by weight.
The preparation of embodiment 1 compound 1-I
Figure BDA00001983296300111
Steps A:
By triphosgene (8.9g, 30.0mmol) be dissolved in 100mL ethyl acetate, add triethylamine (10.1g, 99.8mmol), stir borehole cooling to-10~-5 ℃, slowly drip 2,5-dichlorphenamide bulk powder (8.1g, ethyl acetate 50.0mmol) (80mL) solution, drips about 0.5-1 hour.Dropwise, be warming up to 50 ℃ of stirring reaction 1-2 hour.It is complete that TLC detects raw material reaction, is cooled to room temperature, and reaction solution directly drops into the next step.
Step B:
Previous step reaction solution is warming up to 25~30 ℃, and ethyl acetate (50mL) solution to dripping para-bromoaniline (6.9g, 40.1mmol), diisopropylethylamine (6.5g, 50.3mmol) in reaction solution, drips about 0.5-1 hour.Dropwise, continue 25~30 ℃ of reaction 1-2 hour of temperature control.Reaction solution concentrating under reduced pressure is fallen to half volume, under stirring, in system, drip 100mL water, adularescent solid is separated out, and filters, and filter cake vacuum-drying obtains 1-III compound 11.6g, yield 80.4%.MS(ESI)m/z:(M+H)=361.0。
Step C:
In reaction flask, add 1-III compound (11.6g, 32.2mmol) successively, titanium dioxide two boron (2.6g, 48.3mmol), sodium bicarbonate (6.7g, 79.8mmol) and water (100mL), stir, and adds Pd (PPh 3) 4(1.1g, 1.0mmol).Be warming up to backflow, temperature control reaction 2-3 hour.It is complete that TLC detects raw material reaction, and reaction system is slowly cooled to 0~5 ℃, separates out solid, continues insulated and stirred 0.5-1 hour.Filter, filter cake acetonitrile recrystallization, dries and obtains 1-I compound 8.7g, yield 83.1%, and HPLC detects purity 98.7%.MS(ESI)m/z:(M+H)=326.0。
The preparation of embodiment 2 compound 2-I
Figure BDA00001983296300121
Steps A:
By triphosgene (14.8g, 100.0mmol) be dissolved in 100mL tetrahydrofuran (THF), add diisopropylethylamine (13.4g, 103.7mmol), stir borehole cooling to-10~-5 ℃, slowly drip 1-amino-2,4-dimethyl benzene (12.1g, tetrahydrofuran (THF) 100.0mmol) (120mL) solution, drips about 0.5-1 hour.Dropwise, be warming up to return stirring reaction 1-2 hour.It is complete that TLC detects raw material reaction, is cooled to room temperature, and reaction solution directly drops into the next step.
Step B:
Previous step reaction solution is warming up to 25~30 ℃, adds salt of wormwood (13.8g, 100.0mmol), then, to tetrahydrofuran (THF) (50mL) solution that drips para-bromoaniline (17.2g, 100.0mmol) in reaction solution, drip about 0.5-1 hour.Dropwise, continue 25~30 ℃ of reaction 1-2 hour of temperature control.Reaction solution concentrating under reduced pressure is fallen to half volume, under stirring, in system, drip 100mL water, adularescent solid is separated out.Filter, filter cake vacuum-drying obtains 2-II I compound 25.6g, yield 80.2%.MS(ESI)m/z:(M+H)=320.2,(M+Na)=342.2。
Step C:
In reaction flask, add 2-III compound (25.6g, 80.2mmol) successively, tetramethoxy two boron (14.0g, 96.4mmol), Potassium ethanoate (7.9g, 80.5mmol) and methyl alcohol (200mL), stir, and adds PdCl 2(dppf) (5.9g, 8.0mmol).Be warming up to backflow, temperature control reaction 2-3 hour.It is complete that TLC detects raw material reaction, and reaction system is cooled to room temperature, adds 500mL water, with methylene dichloride 300ml, divides 3 extractions, 300mL saturated common salt water washing 1 time, anhydrous sodium sulfate drying.Filtrate decompression is concentrated into dry crude product 24.3g, and acetonitrile recrystallization is dried and obtained 2-I compound 20.6g, yield 82.2%, and HPLC detects purity 99.1%.MS(ESI)m/z:(M+H)=313.1。
The preparation of embodiment 3 compound 3-I
Figure BDA00001983296300131
Steps A:
The fluoro-5-monomethylaniline of 2-(5.0g, 39.9mmol) is dissolved in 150mL methylene dichloride, adds diisopropylethylamine (6.2g, 48.0mmol).Stir borehole cooling to-10~-5 ℃, slowly drip methylene dichloride (100mL) solution of triphosgene (4.8g, 16.2mmol), drip about 0.5-1 hour.Dropwise, be warming up to stirring at room reaction 3-4 hour, it is complete that TLC detects raw material reaction, and reaction solution directly drops into the next step.
Step B:
Previous step reaction solution is warming up to 25~30 ℃, in reaction solution, drips para-bromoaniline (6.9g, 40.1mmol), the methylene dichloride of triethylamine (8.1g, 80.0mmol) (30mL) solution, drips about 0.5-1 hour.Dropwise, continue 25~30 ℃ of reaction 1-2 hour of temperature control.The reaction mixture concentrating under reduced pressure obtaining is fallen to half volume, under stirring, in system, drip 100mL water, adularescent solid is separated out, and filters, and filter cake vacuum-drying obtains formula VII compound 10.7g, yield 82.6%.MS(ESI)m/z:(M+H)=324.1。
Step C:
In reaction flask, add formula VII compound (10.7g, 33.1mmol) successively, duplex tetramethyl ethylene ketone boric acid ester (9.2g, 36.3mmol), Potassium ethanoate (9.7g, 98.8mmol) and DMF (100mL).Stir, add PdCl 2(dppf) (1.2g, 1.7mmol), is warming up to 80~85 ℃, temperature control reaction 2-3 hour.It is complete that TLC detects raw material reaction, and reaction system is cooled to room temperature, adds 200mL water, with methylene dichloride 200ml, divides 3 extractions, 200mL saturated common salt water washing 1 time, and anhydrous sodium sulfate drying, filtrate decompression is concentrated into dry crude product 12.5g.Acetonitrile recrystallization, dries and obtains formula VI compound 10.6g, yield 86.5%, and it is 99.2% that HPLC detects purity.MS(ESI)m/z:(M+H)=371.2。
The preparation of embodiment 4 compound 4-I
Figure BDA00001983296300141
Steps A:
By the bromo-4-monomethylaniline of 2-(37.2g, 200.0mmol) be dissolved in 200mL toluene, add pyridine (47.5g, 600.5mmol), stir borehole cooling to-10~-5 ℃, slowly drip toluene (150mL) solution of triphosgene (29.6g, 100.0mmol), drip about 0.5-1 hour.Dropwise, be warming up to return stirring reaction 1-2 hour.It is complete that TLC detects raw material reaction, is cooled to room temperature, and reaction solution directly drops into the next step.
Step B:
Upwards single step reaction liquid adds salt of wormwood (41.4g, 300.0mmol), is warming up to 25~30 ℃, drips toluene (400mL) solution of paraiodoaniline (39.4g, 180.0mmol), drips about 1-2 hour.Dropwise, continue 25~30 ℃ of reaction 1-2 hour of temperature control.Reaction solution concentrating under reduced pressure is fallen to half volume, under stirring, in system, drip 1000mL water, adularescent solid is separated out.Filter, filter cake vacuum-drying obtains 4-III compound 63.2g, yield 81.4%.MS(ESI)m/z:(M+H)=432.1。
Step C:
In reaction flask, add 4-III compound (63.2g, 146.6mmol) successively, duplex pyrocatechol boric acid ester (35.7g, 150.0mmol), salt of wormwood (27.6g, 200.0mmol), methyl alcohol (500mL) and water (500mL), stir, and adds Pd (PPh 3) 4(8.0g).Be warming up to 60 ℃, temperature control reaction 2-3 hour.It is complete that TLC detects raw material reaction, and reaction system is cooled to 0-5 ℃, separates out solid, continues to stir 1 hour.Filter, filter cake acetonitrile recrystallization, dries and obtains 4-I compound 48.3g, yield 77.9%, and it is 98.5% that HPLC detects purity.MS(ESI)m/z:(M+H)=424.1。
The preparation of embodiment 5 compound 5-I
Figure BDA00001983296300151
Steps A:
By triphosgene (5.9g, 20.0mmol) be dissolved in 100mL isopropyl acetate, add diisopropylethylamine (6.5g, 50.3mmol), stir borehole cooling to-10~-5 ℃, slowly drip isopropyl acetate (50mL) solution of the fluoro-4-anisidine of 3-(7.1g, 50.0mmol), drip about 0.5-1 hour.Dropwise, be warming up to stirring at room reaction 3-4 hour.It is complete that TLC detects raw material reaction, and reaction solution directly drops into the next step.
Step B:
Upwards single step reaction liquid adds salt of wormwood (11.0g, 79.7mmol), is warming up to 25~30 ℃, drips isopropyl acetate (30mL) solution of para-bromoaniline (6.9g, 40.1mmol), drips about 0.5-1 hour.Dropwise, continue 45~50 ℃ of reaction 1-2 hour of temperature control.Reaction solution concentrating under reduced pressure is fallen to half volume, under stirring, in system, drip 100mL water, adularescent solid is separated out.Filter, filter cake vacuum-drying obtains 5-II I compound 11.4g, yield 83.8%.MS(ESI)m/z:(M+H)=340.1。
Step C:
In reaction flask, add 5-III compound (11.4g successively, 33.6mmol), duplex (D-diethyl tartrate) boric acid ester (15.1g, 35.0mmol), sodium-acetate (8.2g, 100.0mmol) and isopropyl acetate (200mL), stir, add Pd (OAc) 2(0.4g, 1.8mmol).Be warming up to 90~100 ℃, temperature control reaction 2-3 hour.It is complete that TLC detects raw material reaction, and reaction system is cooled to room temperature, adds 200mL water, with methylene dichloride 200ml, divides 3 extractions, 200ml saturated common salt water washing 1 time, anhydrous sodium sulfate drying.Filtrate decompression is concentrated into dry crude product 15.2g, and acetonitrile recrystallization is dried and obtained 5-I compound 13.1g, yield 82.1%, and it is 98.8% that HPLC detects purity.MS(ESI)m/z:(M+H)=475.2。
The preparation of embodiment 6 compound 6-I
Figure BDA00001983296300161
Steps A:
By triphosgene (5.9g, 20.0mmol) be dissolved in 100mL ethyl acetate, add triethylamine (10.1g, 99.8mmol), stir borehole cooling to-10~-5 ℃, slowly drip ethyl acetate (80mL) solution of 2-methyl-5-5-trifluoromethylaniline (8.8g, 50.0mmol), drip about 0.5-1 hour.Dropwise, be warming up to 60 ℃ of stirring reaction 1-2 hour.It is complete that TLC detects raw material reaction, is cooled to room temperature, and reaction solution directly drops into the next step.
Step B:
Upwards in single step reaction liquid, add sodium hydroxide (2.0g, 50.0mmol), be warming up to 25~30 ℃, drip ethyl acetate (50mL) solution of p-Chlorobenzoic acid amide (5.7g, 45.0mmol), drip about 0.5-1h.Dropwise, continue 25~30 ℃ of reaction 1-2 hour of temperature control.Reaction solution concentrating under reduced pressure is fallen to half volume, under stirring, in system, drip 100mL water, adularescent solid is separated out.Filter, filter cake vacuum-drying obtains 6-III compound 9.3g, yield 75.3%.MS(ESI)m/z:(M+H)=275.7。
Step C:
In reaction flask, add 6-III compound (9.3g successively, 33.9mmol), two (1S, 2S, 3R, 5S) (+)-pinine glycol two boron ester (12.2g, 34.0mmol), triethylamine (10.1g, 99.8mmol) and dioxane (100mL), stir, add Pd (PPh 3) 4(0.8g, 1.0mmol).Be warming up to backflow, temperature control reaction 2-3 hour.It is complete that TLC detects raw material reaction, and reaction system is cooled to room temperature, adds 200mL water, with methylene dichloride 200ml, divides 3 extractions, 200ml saturated common salt water washing 1 time, anhydrous sodium sulfate drying.Filtrate decompression is concentrated into dry crude product 13.5g, and acetonitrile recrystallization is dried and obtained 6-I compound 11.3g, yield 79.7%, and it is 98.6% that HPLC detects purity.MS(ESI)m/z:(M+H)=419.3。
The preparation of embodiment 7 compound 7-I
Figure BDA00001983296300171
Steps A:
By triphosgene (8.9g, 30.0mmol) be dissolved in 100mL methylene dichloride, add diisopropylethylamine (12.9g, 99.8mmol), stir borehole cooling to-10~-5 ℃, slowly drip methylene dichloride (50mL) solution of 4-monomethylaniline (5.4g, 50.0mmol), drip about 0.5-1 hour.Dropwise, be warming up to stirring at room reaction 3-4 hour.It is complete that TLC detects raw material reaction, and reaction solution directly drops into the next step.
Step B:
Upwards single step reaction liquid adds salt of wormwood (11.0g, 80.0mmol), is warming up to 25~30 ℃, drips methylene dichloride (30mL) solution of para-bromoaniline (6.9g, 40.0mmol), drips about 0.5-1 hour.Dropwise, continue 35~40 ℃ of reaction 1-2 hour of temperature control.Reaction solution concentrating under reduced pressure is fallen to half volume, under stirring, in system, drip 100mL water, adularescent solid is separated out.Filter, filter cake vacuum-drying obtains 7-III compound 9.9g, yield 81.2%.MS(ESI)m/z:(M+H)=306.1。
Step C:
In reaction flask, add 7-II I compound (9.9g successively, 32.5mmol), duplex (2,4-dimethyl-2,4-pentanediol) boric acid ester (11.3g, 40.0mmol), sodium-acetate (4.1g, 50.0mmol) and tetrahydrofuran (THF) (200mL), stir, add Pd (OAc) 2(0.4g, 1.6mmol).Be warming up to backflow temperature control reaction 2-3 hour.It is complete that TLC detects raw material reaction, and reaction system is cooled to room temperature, adds 200mL water, with methylene dichloride 200ml, divides 3 extractions, 200mL saturated common salt water washing 1 time, anhydrous sodium sulfate drying.Filtrate decompression is concentrated into dry crude product 15.2g, and acetonitrile recrystallization is dried and obtained 7-I compound 9.6g, yield 80.7%, and it is 98.9% that HPLC detects purity.MS(ESI)m/z:(M+H)=367.2。
The preparation of embodiment 8 N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea
Successively to the formula VI compound (10.6g, 28.6mmol), 3-amino-4-iodine indazole (8.1g, 31.3mmol), sodium carbonate (7.6g, 71.7mmol), ethanol 100mL, the water 100mL that add embodiment 3 to obtain in reaction flask.Under stirring at room, add PdCl 2(dppf) (0.4g, 0.6mmol), is warming up to backflow.Reflux after 8 hours, pressure reducing and steaming ethanol.In residue, add ethyl acetate 150mL, 20% aqueous ammonium chloride solution 50mL, stir 30 minutes.Separate organic layer, wash anhydrous sodium sulfate drying with water 3 times.Organic layer evaporated under reduced pressure, dichloromethane-ethanol for crude product (10:1) recrystallization obtaining, obtains white solid 8.0g, yield 74.8%, it is 99.0% that HPLC detects purity.MS(ESI)m/z:(M+H)=376.4。
Similarly, by the reaction of leaving away of leavings group, with compound 1-I, make the formula A compound that X is 2-Cl-5-Cl.With formula 2-I compound, make the formula A compound of 2-Me-4-Me.With formula 5-I compound, make the formula A compound of 3-F-4-OMe.After tested, it is active that these formulas A compound has RTK inhibition.
All documents of mentioning in the present invention are all quoted as a reference in this application, just as each piece of document, are quoted as a reference separately.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.

Claims (12)

1. a preparation method for formula I compound, is characterized in that, the method comprises the following steps:
1) under alkali exists, formula III compound reacts with formula IV compound, forms formula V compound;
2) under the existence of alkali and palladium catalyst, formula V compound reacts with borane reagent, forms formula I compound;
Figure FDA00001983296200011
Above-mentioned various in,
R1 is the one or more substituting groups that are positioned at optional position on phenyl ring, and each R1 can be identical or different and independently selected from lower group: halogen, C 1-6alkyl, C 1-6haloalkyl or C 1-6alkoxyl group;
R2 and R3 are hydroxyl or C independently 1-6alkoxyl group, C 1-6acyloxy, or R2 and R3 jointly form and replace or unsubstituted C 1-8alkane dioxy base, C 6-10virtue dioxy base, or C 1-8cycloalkanes dioxy base; Wherein said replacement is to have one or more substituting groups that are selected from lower group: C 1-6alkyl, halogen, phenyl, benzyl ,-CH 2-, C 1-6alkoxyl group, C 1-6acyl group, C 1-6acyloxy, C 1-6carbalkoxy;
R4 is selected from lower group: H, halogen.
2. the method for claim 1, is characterized in that, R1 is two identical or different substituting groups that are positioned at phenyl ring optional position, and described substituting group is selected from: halogen, C 1-6alkyl; And/or
R2 and R3 form replacement or unsubstituted C jointly 2-8alkane dioxy base, the definition of wherein said replacement is as claimed in claim 1; And/or
R4 is Cl or Br.
3. method as claimed in claim 2, is characterized in that, described formula I compound is following structure:
Figure FDA00001983296200012
4. the method for claim 1, is characterized in that step 1) and step 2) described in alkali be selected from organic bases or mineral alkali;
Preferably, described organic bases is selected from lower group: triethylamine, diethylamine, diisopropylethylamine, pyridine or its combination; More preferably, described alkali is triethylamine or diisopropylethylamine;
In another preference, described mineral alkali is selected from sodium-acetate, Potassium ethanoate, SODIUM PHOSPHATE, MONOBASIC, Sodium phosphate dibasic, potassium primary phosphate, dipotassium hydrogen phosphate, sodium carbonate, sodium bicarbonate, salt of wormwood, saleratus, sodium hydroxide, potassium hydroxide or its combination.
5. the method for claim 1, is characterized in that step 1) mol ratio of Chinese style IV compound and formula III compound is 0.2~1:1, preferably 0.8~1:1.
6. the method for claim 1, it is characterized in that, step 2) borane reagent described in is selected from lower group: titanium dioxide two boron, tetramethoxy hypoboric acid ester, tetraethoxy hypoboric acid ester, four n-butoxy hypoboric acid esters, tetraisopropoxide hypoboric acid ester, four positive propoxy hypoboric acid esters, duplex pyrocatechol boric acid ester, duplex tetramethyl ethylene ketone boric acid ester, connection boric acid DOPCP, two [(-) pinine glycol] two boron esters, two (di-isopropyl-L-TARTARIC ACID diethyl ester) hypoboric acid ester, two (1S, 2S, 3R, 5S) (+)-pinine glycol two boron esters, duplex (2-methyl-2, 4-pentanediol) boric acid ester, duplex (2, 4-dimethyl-2, 4-pentanediol) boric acid ester, duplex (D-diethyl tartrate) boric acid ester, or its combination.
7. the method for claim 1, is characterized in that, the mol ratio of the consumption of described borane reagent and formula V compound is 0.8~5:1, preferably 1~1.5:1.
8. the method for claim 1, is characterized in that step 2) described in the consumption of alkali and the mol ratio of formula V compound be 0.5~5:1, preferably 2~3.5:1; And/or
Step 2) palladium catalyst described in is selected from 1,1 '-bis-(diphenylphosphine) ferrocene, four triphenyl phosphorus palladiums, palladium carbon, palladium, or its combination, preferably 1,1 '-bis-(diphenylphosphine) ferrocene, four triphenyl phosphorus palladiums; And/or
The mol ratio of the consumption of the palladium catalyst step 2) and formula V compound is 0.01~0.2:1, is preferably 0.02~0.08:1.
9. as the method as described in arbitrary in claim 1-8, it is characterized in that, the method comprises the steps:
I) under alkali exists, the fluoro-5-methyl of isocyanic acid 2-phenyl ester reacts with para-bromoaniline, forms formula VII compound; With
Ii), in inert solvent, under alkali and palladium catalyst existence, formula VII compound reacts with borane reagent, forms formula VI compound:
Figure FDA00001983296200021
10. the method for claim 1, is characterized in that, described method also comprises by following steps prepares formula III compound:
1a) in inert solvent, under alkali exists, formula II compound reacts with triphosgene, forms formula III compound:
Figure FDA00001983296200031
Above-mentioned various in, R1 is the one or more substituting groups that are positioned at optional position on phenyl ring, each R1 can be identical or different and independently selected from lower group: halogen, C 1-6alkyl, C 1-6haloalkyl or C 1-6alkoxyl group.
The preparation method of 11. 1 kinds of formula A compounds, comprises step:
1) under alkali exists, formula III compound reacts with formula IV compound, forms formula V compound;
2) under the existence of alkali and palladium catalyst, formula V compound reacts with borane reagent, forms formula I compound;
Figure FDA00001983296200032
Above-mentioned various in,
R1 is the one or more substituting groups that are positioned at optional position on phenyl ring, and each R1 can be identical or different and independently selected from lower group: halogen, C 1-6alkyl, C 1-6haloalkyl or C 1-6alkoxyl group;
R2 and R3 are hydroxyl or C independently 1-6alkoxyl group, C 1-6acyloxy, or R2 and R3 jointly form and replace or unsubstituted C 1-8alkane dioxy base, C 6-10virtue dioxy base, or C 1-8cycloalkanes dioxy base; Wherein said replacement is to have one or more substituting groups that are selected from lower group: C 1-6alkyl, halogen, phenyl, benzyl ,-CH 2-, C 1-6alkoxyl group, C 1-6acyl group, C 1-6acyloxy, C 1-6carbalkoxy;
R4 is selected from lower group: H, halogen;
3) formula I compound is reacted with 3-amino-4-iodine indazole, forms formula A compound,
Figure FDA00001983296200041
In formula, R is
Figure FDA00001983296200042
and X is the one or more substituting groups that are positioned at optional position on phenyl ring, each R1 can be identical or different and independently selected from lower group: halogen, C 1-6alkyl, C 1-6haloalkyl or C 1-6alkoxyl group.
The preparation method of 12. 1 kinds of N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea, is characterized in that, comprises step:
Formula VI compound is reacted with 3-amino-4-iodine indazole, forms N-(4-(3-amino-1 h-indazole-4-yl) phenyl)-N '-(the fluoro-5-aminomethyl phenyl of 2-) urea:
Figure FDA00001983296200043
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CN104326985A (en) * 2014-09-24 2015-02-04 安润医药科技(苏州)有限公司 Preparation method of linifanib
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CN104326985A (en) * 2014-09-24 2015-02-04 安润医药科技(苏州)有限公司 Preparation method of linifanib
CN114105946A (en) * 2020-08-26 2022-03-01 浙江苏泊尔制药有限公司 Tedizolid phosphate intermediate and preparation method thereof

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