WO2020108415A1 - 一种trk激酶抑制剂化合物的中间体化合物及制备方法 - Google Patents

一种trk激酶抑制剂化合物的中间体化合物及制备方法 Download PDF

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WO2020108415A1
WO2020108415A1 PCT/CN2019/120441 CN2019120441W WO2020108415A1 WO 2020108415 A1 WO2020108415 A1 WO 2020108415A1 CN 2019120441 W CN2019120441 W CN 2019120441W WO 2020108415 A1 WO2020108415 A1 WO 2020108415A1
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formula
compound
reaction
tert
alkali metal
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French (fr)
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李进
张登友
冯静超
廖伟
陈伟
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成都先导药物开发股份有限公司
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D487/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04Ortho-condensed systems
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/519Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D471/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/12Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains three hetero rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D471/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/22Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed systems contains four or more hetero rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00Indexing scheme relating to specific properties of organic compounds
    • C07B2200/07Optical isomers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Definitions

  • the invention belongs to the field of drug synthesis, and particularly relates to an intermediate compound of TRK kinase inhibitor compound and a preparation method thereof.
  • NTRK/TRK (Tropomyosin receptor) kinase is a neurotrophic factor tyrosine kinase receptor, which belongs to the receptor tyrosine kinase family.
  • the Trk family mainly includes 3 members, NTRK1/TrkA, NTRK2/TrkB and NTRK3/TrkC. Trk kinase plays an important physiological function in the development of nerves, including the growth and function maintenance of neuron axons, the occurrence and development of memory, and protection of neurons from damage and so on.
  • Trk signal transduction pathway is also strongly related to the occurrence and development of tumors.
  • Activated Trk signaling proteins have been found in neuroblastoma, prostate cancer, breast cancer and so on. The discovery of multiple Trk fusion proteins in recent years has further demonstrated its biological function of promoting tumorigenesis.
  • LOXO-195 has produced a better effect when treating such mutations.
  • the LOXO-195 compound and its preparation method are disclosed in WO2017075107 and WO2018081417, respectively. Among them, WO2018081417 discloses a method for preparing LOXO-195 involving a method including ten steps.
  • This method not only has a large number of steps, but also uses Pd/C hydrogenation in the addition step.
  • This step has the danger of explosion, and the remaining Pd/C needs to be processed in the post-processing process, which is undesirable for large-scale production of.
  • LOXO-195 has a significant effect on the treatment of cancer patients with TRK gene mutations leading to drug resistance, it is necessary to provide a more optimized method to prepare LOXO-195. Therefore, it is necessary to develop an industrial synthesis method that can be scaled up, is safer, is easier to operate, and has a suitable overall yield.
  • the present invention provides a new method for preparing LOXO-195 and its salts and suitable for small-scale or large-scale manufacturing, which can be used to prepare a new intermediate of LOXO-195 and a method for preparing the intermediate.
  • the method for preparing LOXO-195 provided by the present invention has at least the following advantages:
  • the raw materials used in the present invention are cheap and readily available, thereby reducing the cost of reagents.
  • the method provided by the present invention can obtain LOXO-195 in fewer steps, with a high yield, thereby reducing the cost of reagents and saving labor costs.
  • the invention relates to an intermediate compound of TRK kinase inhibitor compound, as shown in formula (VIII):
  • R 3 is H, C 1 -C 6 alkyl
  • R 2 is an amino protecting group.
  • R 2 is benzyloxycarbonyl, tert-butoxycarbonyl, allyloxycarbonyl, trimethylsilylethoxycarbonyl, methyl (or ethyl) oxycarbonyl, ortho-dimethoxy, p-toluenesulfonyl, tri Fluoroacetyl, o-nitrobenzenesulfonyl, benzoyl, triphenylmethyl, p-methoxybenzyl, benzyl, 2,4-dimethoxybenzyl.
  • the present invention provides a method for preparing a compound of formula (V) or a salt thereof: it combines a compound of formula (II) and a compound of formula (III) or a compound of formula (II) and a compound of formula (IV) in a metal catalyst Under the action, the compound of formula (V) is obtained;
  • the structural formula of the formula (II) is: The structural formula of formula (III) is: The structural formula of formula (IV) is The structural formula of the compound of formula (V) is:
  • R 1 is F, Cl, Br, I, OTf, OMs, OTs;
  • X is F, Cl, Br, I
  • R 2 is an amino protecting group
  • M is alkali metal, iron, magnesium, calcium, copper
  • n is the number of charges carried by M metal ions, which is a positive integer
  • R is H, C 1 -C 10 alkyl or C 1 -C 10 substituted alkyl, wherein the substituent of the C 1 -C 10 alkyl is selected from the substituents of C 1 -C 10 alkoxy ;
  • the 2 ORs can be formed as a four- to ten-membered ring.
  • reaction is carried out under the action of a base.
  • the base is selected from metal carbonate, alkali metal phosphate, alkali metal hydride, alkali metal alkoxide or alkali metal hydroxide.
  • the base is potassium carbonate.
  • alkali metal M is selected from lithium, sodium, and potassium.
  • n 1, 2, 3, 4.
  • the metal catalyst is selected from a palladium catalyst, a nickel catalyst, and a copper catalyst.
  • the palladium catalyst is 1,1′-bis(diphenylphosphino)ferrocene palladium(II) dichloride.
  • reaction is carried out in a mixed solvent of water and organic solvent.
  • organic solvent is selected from ether, tetrahydrofuran, and alcohol.
  • the ether is dimethyl ether.
  • volume ratio of water to dimethyl ether is 1:4.
  • the R 2 is selected from the group consisting of benzyloxycarbonyl, tert-butoxycarbonyl, allyloxycarbonyl, trimethylsilylethoxycarbonyl, methyl (or ethyl)oxycarbonyl, o-phthylmethoxy, p-toluenesulfonate Acyl, trifluoroacetyl, o-nitrobenzenesulfonyl, benzoyl, triphenylmethyl, p-methoxybenzyl, benzyl, 2,4-dimethoxybenzyl.
  • R 2 is tert-butoxycarbonyl.
  • the invention also provides a method for preparing the compound of formula (I) or a salt thereof, characterized in that it includes the following steps:
  • step a reaction is carried out in a strong base.
  • the strong base is selected from hydroxides and alkoxides.
  • the strong base is sodium hydroxide.
  • step a reaction is carried out in tetrahydrofuran, alcohol, water or a mixed solvent thereof.
  • the alcohol is methanol.
  • the solvent is tetrahydrofuran: methanol: water volume ratio is 2:1:1.
  • the removal of the amino protecting group R 2 in the step b reaction is performed under acidic conditions.
  • the acid is hydrochloric acid.
  • the cyclization in the step c reaction is carried out in the presence of a condensing agent.
  • the condensing agent is selected from dicyclohexyl carbon, N, N'-diisopropyl, N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide, 1-( 3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, N,N'-carbonyldiimidazole, 2-(7-azabenzotriazol-1-yl)-N, N,N',N'-tetramethylurea hexafluorophosphate, 1-(benzotriazol-1-yl)-N,N,N',N'-tetramethylurea hexafluorophosphate.
  • the condensing agent is 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride or 1-(benzotriazol-1-yl)-N,N, N',N'-tetramethylurea hexafluorophosphate.
  • the invention provides a method for preparing TRK kinase inhibitor compound LOXO-195 and its salt.
  • the method is safe, convenient to operate, and has high product yield, which is suitable for small-scale or large-scale industrial manufacturing.
  • C 1 -C 10 alkyl group used in the present invention refers to a linear or branched chain of 1 to 10 carbon atoms. For example, methyl, ethyl, isopropyl, tert-butyl and hexyl.
  • C 1 -C 10 alkoxy refers to a linear or branched monovalent alkoxy group of 1 to 10 carbon atoms, wherein the free radical is on an oxygen atom.
  • the free radical is on an oxygen atom.
  • substitution refers to the replacement of hydrogen atoms in a molecule with other different atoms or molecules.
  • amino protecting group refers to benzyloxycarbonyl, tert-butoxycarbonyl, allyloxycarbonyl, trimethylsilyloxycarbonyl, methyl (or ethyl)oxycarbonyl, phthalyloxy, para Tosyl, trifluoroacetyl, o-nitrobenzenesulfonyl, benzoyl, triphenylmethyl, p-methoxybenzyl, benzyl, 2,4-dimethoxybenzyl.
  • strong base refers to a basic compound capable of deprotonating a weak acid in an acid-base reaction. Strong bases can also hydrolyze ester compounds in the hydrolysis reaction to produce the corresponding carboxylic acid compounds.
  • strong bases include but are not limited to hydroxides, alkoxides and ammonia. Common examples of strong bases are alkali metal hydroxides and alkaline earth metals, such as NaOH. Some strong bases can even deprotonate very weakly acidic C-H groups without water. Strong bases include, but are not limited to, sodium hydroxide, potassium hydroxide, barium hydroxide, cesium hydroxide, strontium hydroxide, lithium hydroxide, and rubidium hydroxide. In this embodiment, NaOH is used as a strong base.
  • Condensing agent refers to an agent that forms an amide bond or an ester bond, for example, by coupling an acid and an amine or alcohol, respectively.
  • Condensing agents are commercially available. Condensing agents include but are not limited to dicyclohexyl carbon (DCC), ⁇ , ⁇ ' diisopropyl (DIC), N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide (EDCI ), gold carbonyldiimidazole (CDI), 2-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethylurea hexafluorophosphate (HATU), 2-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethylurea hexafluorophosphate (HATU), O-(benzotriazole-1- Radical)-N,N,N',N'-t
  • room temperature as used herein is understood in the art and is generally related to temperature (eg, reaction temperature), which is about the temperature of the environment in which the reaction is carried out, for example, at a temperature of about 20°C to about 30°C .
  • reaction reagents and abbreviations involved in the present invention are as follows:
  • the raw materials and equipment used in the specific embodiments of the present invention are known products, which are obtained by purchasing commercially available products.
  • Step 2 (R)-N-((R)-1-(2-chloro-5-fluoropyridin-3-yl)-3-(1,3-dioxan-2-yl)propane Yl)-2-methylpropane-2-sulfinamide
  • Step 4 (R)-ethyl 5-(2-(2-chloro-5-fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxy Preparation of ethyl acid
  • Step 5 ethyl 5-((R)-2-(2-((R)-3-((tert-butoxycarbonyl)amino)butyl)-5-fluoropyridin-3-yl)pyrrolidine-1 -Yl) pyrazolo[1,5-a]pyrimidine-3-carboxylic acid ethyl ester
  • Step 6 5-((R)-2-(2-((R)-3-((tert-butoxycarbonyl)amino)butyl)-5-fluoropyridin-3-yl)pyrrolidin-1-yl ) Preparation of pyrazolo[1,5-a]pyrimidine-3-carboxylic acid
  • Step 7 5-((R)-2-(2-((R)-3-aminobutyl)-5-fluoropyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5 -a] Preparation of pyrimidine-3-carboxylic acid
  • Steps 1 to 4 are performed in accordance with steps 1 to 4 in Example 1.
  • Step 5 ethyl 5-((R)-2-(2-((R)-3-((tert-butoxycarbonyl)amino)butyl)-5-fluoropyridin-3-yl)pyrrolidine-1 -Yl) pyrazolo[1,5-a]pyrimidine-3-carboxylic acid ethyl ester
  • Step 6 to Step 8 follow Step 6 to Step 8 in Example 1.
  • Step 1-4 (R)-ethyl 5-(2-(5-fluoro-2-methoxypyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine Preparation of ethyl-3-carboxylate
  • Step 5 (R)-ethyl 5-(2-(5-fluoro-2-hydroxypyridin-3-yl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyrimidine-3-carboxy Preparation of ethyl acid
  • Step 6 (R)-ethyl 5-(2-(5-fluoro-2-(((trifluoromethyl)sulfonyl)oxy)pyridin-3-yl)pyrrolidin-1-yl)pyrazolo Preparation of [1,5-a]pyrimidine-3-carboxylic acid ethyl ester
  • Step 7 Preparation of phenyl 5-fluoro-2-hydroxyphenyl (methyl) carbamate
  • Step 8-10 Preparation of LOXO-195
  • Example 1 the compound of formula (II) is reacted with the compound of formula (III) to prepare the compound of formula (V).
  • the R 1 substituent of the compound of formula (II) is Cl, and the compound LOXO-195 is prepared.
  • the yield of the target product LOXO-195 was 36.4%.
  • the LOXO-195 prepared by this method has a high yield.
  • the present invention provides a method for preparing TRK kinase inhibitor compound LOXO-195 and its salts.
  • the method is safe, easy to operate, and has a high product yield, which is suitable for small-scale or large-scale industrial manufacturing.

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Abstract

一种TRK激酶抑制剂化合物的中间体化合物式(VIII)、其制备方法,以及将其应用于制备式(I)化合物的用途,该方法获得的产物收率高,适用于规模化生产。

Description

一种TRK激酶抑制剂化合物的中间体化合物及制备方法 技术领域
本发明属于药物合成领域,具体涉及一种TRK激酶抑制剂化合物的中间体化合物及制备方法。
背景技术
NTRK/TRK(Tropomyosin receptor kinase)为神经营养因子酪氨酸激酶受体,隶属于受体酪氨酸激酶家族。Trk家族主要包括3个成员,NTRK1/TrkA,NTRK2/TrkB和NTRK3/TrkC。Trk激酶在神经的发育过程中发挥重要的生理功能,包括神经元轴突的生长与功能维持、记忆的发生发展以及保护神经元免受伤害等等。同时,大量的研究表明Trk信号转导通路的活化与肿瘤的发生发展也有很强的相关性,在神经细胞瘤、前列腺癌、乳腺癌等中都发现了活化的Trk信号蛋白。近几年来多种Trk融合蛋白的发现,更显示了其促进肿瘤发生的生物学功能。
但是,在接受TRK抑制剂治疗后,癌症患者的TRK基因可能产生一些突变(如NTRK1G595R,NTRK3G623R等位点的突变),导致耐药性产生。现有的药物不能解决这个问题,而LOXO-195在治疗这类突变时产生了较好的疗效。LOXO-195化合物及其制备方法分别公开于WO2017075107和WO2018081417。其中,WO2018081417公开制备LOXO-195的方法涉及一种包括十个步骤的方法。
该方法不仅步骤数量较多,而且加成步骤还使用了Pd/C氢化,这一步骤有爆炸的危险,而且在后处理过程中需要处理剩余的Pd/C,这是大规模生产所不希望的。
由于LOXO-195对治疗TRK基因突变导致药物耐受的癌症患者有显著效果,使得需要提供一个更优化的方法制备LOXO-195。因此,需要开发一个可放大、更安全,操作方便,总体收率适合的工业化合成方法。
发明内容
针对上述问题本发明提供了一种制备LOXO-195及其盐并且适用于小规模或者大规模制造的新方法,可用于制备LOXO-195的新中间体以及制备所述中间体的方法。
本发明提供的用于制备LOXO-195的方法相较于WO2018081417中所报道的至少具有以下优点:
(1)本发明中所使用的原料便宜、易得,由此降低了试剂的成本。
(2)本发明提供的方法可以以更少的步骤得到LOXO-195,收率高,由此降低了试剂的成本,节省了劳动成本。
(3)本发明提供的方法避免了使用Pd/C氢化,易于操作。
本发明涉及一种TRK激酶抑制剂化合物的中间体化合物,如式(Ⅷ)所示:
Figure PCTCN2019120441-appb-000001
其中R 3为H,C 1-C 6烷基,
R 2为氨基保护基。
进一步地,R 2为苄氧羰基、叔丁氧基羰基、烯丙氧羰基、三甲基硅乙氧羰基、甲(或乙)氧羰基、邻苯二甲氧基、对甲苯磺酰基、三氟乙酰基、邻硝基苯磺酰基、苯甲酰基、三苯基甲基、对甲氧基苄基、苄基、2,4-二甲氧基苄基。
进一步地,式(Ⅷ)中间体化合物为:
Figure PCTCN2019120441-appb-000002
本发明提供了一种用于制备式(V)化合物或其盐的方法:它是将式(Ⅱ)化合物与式(Ⅲ)化合物或式(Ⅱ)化合物与式(Ⅳ)化合物在金属催化剂的作用下反应,得式(V)化合物;
所述的式(Ⅱ)的结构式为:
Figure PCTCN2019120441-appb-000003
式(Ⅲ)的结构式为:
Figure PCTCN2019120441-appb-000004
式(Ⅳ)的结构式为
Figure PCTCN2019120441-appb-000005
式(V)化合物的结构式为
Figure PCTCN2019120441-appb-000006
其中,R 1为F、Cl、Br、I、OTf、OMs、OTs;
X为F、Cl、Br、I;
R 2为氨基保护基;
M为碱金属、铁、镁、钙、铜;
n为M金属离子所带电荷数,为正整数;
R为H、C 1-C 10烷基或C 1-C 10取代烷基,其中所述的C 1-C 10烷基的取代基选自C 1-C 10烷氧基的取代基所取代;所述2个OR可以构成为四-十元环。
进一步地,所述反应在碱的作用下进行。
进一步地,所述的碱选自金属碳酸盐、碱金属磷酸盐、碱金属氢化物、碱金属醇盐或碱金属氢氧化物。
更进一步地,所述的碱为碳酸钾。
进一步地,所述碱金属M选自锂、钠、钾。
进一步地,所述n为1,2,3,4。
进一步地,所述式(Ⅳ)化合物为
Figure PCTCN2019120441-appb-000007
进一步地,所述金属催化剂选自钯催化剂、镍催化剂、铜催化剂。
更进一步地,所述钯催化剂为1,1'-二(二苯膦基)二茂铁二氯化钯(II)。
进一步地,所述反应在水和有机溶剂的混合溶剂中进行。
进一步地,所述有机溶剂选自醚、四氢呋喃、醇。
进一步地,所述醚为二甲醚。
更进一步地,其中水:二甲醚体积比为1:4。
进一步地,所述R 2选自苄氧羰基、叔丁氧基羰基、烯丙氧羰基、三甲基硅乙氧羰基、甲(或乙)氧羰基、邻苯二甲氧基、对甲苯磺酰基、三氟乙酰基、邻硝基苯磺酰基、苯甲酰基、三苯基甲基、对甲氧基苄基、苄基、2,4-二甲氧基苄基。
更进一步地,所述R 2为叔丁氧基羰基。
本发明还提供了一种制备式(I)化合物或其盐的方法,其特征在于:它包括如下步骤:
Figure PCTCN2019120441-appb-000008
a、将权利要求1-15任意一项所述方法制备的式(V)经酯水解得到式(Ⅵ)化合物;
b、再式(Ⅵ)化合物经脱保护基R 2得到式(Ⅶ)化合物;
c、将式(Ⅶ)化合物经环化得到式(Ⅰ)化合物。
进一步地,所述a步骤反应在强碱中进行。
进一步地,所述强碱选自氢氧化物和醇盐。
更进一步地,所述强碱为氢氧化钠。
进一步地,所述a步骤反应在四氢呋喃、醇、水或其混合溶剂中进行。
进一步地,所述醇为甲醇。
更进一步地,所述溶剂为四氢呋喃:甲醇:水体积比为2:1:1。
进一步地,所述b步骤反应中脱去氨基保护基R 2在酸性条件下进行。
更进一步地,所述酸为盐酸。
进一步地,所述c步骤反应中环化是在缩合剂存在条件下进行。
进一步地,所述缩合剂选自二环己基碳,Ν,Ν'-二异丙基,N-(3-二甲基氨基丙基)-N'-乙基碳二亚胺,1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐,N,N’-羰基二咪唑,2-(7-氮杂苯并三氮唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯,1-(苯并三唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯。
更进一步地,所述缩合剂为1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐或1-(苯并三唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯。
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本发明提供了一种制备TRK激酶抑制剂化合物LOXO-195及其盐的方法,该方法安全、操作方便、产物收率高,适合小规模或者大规模的工业化制造。
本发明中使用的词语“包含”、“包括”意在指定所述特征、整数、组分或步骤的存在,但它们并不排除一个或多个其它的特征、整数、组分、步骤或其组合的存在或加入。
本发明中所用的术语“C 1-C 10烷基”指1至10个碳原子的直链或支链。例如,甲基,乙基,异丙基,叔丁基和己基。
本文所用的术语“C 1-C 10烷氧基”是指1至10个碳原子的直链或支链的单价烷氧基,其中所述自由基在氧原子上。例如,甲氧基、乙氧基、丙氧基、异丙氧基和丁氧基。
本文所用的术语“取代”是指分子中的氢原子被其它不同的原子或分子所替换。
本文所用的术语“氨基保护基”是指苄氧羰基、叔丁氧基羰基、烯丙氧羰基、三甲基硅 乙氧羰基、甲(或乙)氧羰基、邻苯二甲氧基、对甲苯磺酰基、三氟乙酰基、邻硝基苯磺酰基、苯甲酰基、三苯基甲基、对甲氧基苄基、苄基、2,4-二甲氧基苄基。
本文所用的“强碱”是指能够在酸碱反应中使弱酸去质子化的碱性化合物。强碱也能够在水解反应中水解酯化合物以产生相应的羧酸化合物。强碱的实例包括但不限于氢氧化物,醇盐和氨。强碱的常见实例是碱金属氢氧化物和碱土金属,例如NaOH。一些强碱甚至能够在没有水的情况下使非常弱酸性的C-H基团去质子化。强碱包括但不限于,氢氧化钠,氢氧化钾,氢氧化钡,氢氧化铯,氢氧化锶,氢氧化锂和氢氧化铷。在本实施方案中,NaOH用作强碱。
本文所用的“缩合剂”是指形成酰胺键或酯键的试剂,例如通过分别偶联酸和胺或醇。缩合剂可以通过商业途径获得。缩合剂包括但不限于二环己基碳(DCC),Ν,Ν'二异丙基(DIC),N-(3-二甲基氨基丙基)-N'-乙基碳二亚胺(EDCI),金羰基二咪唑(CDI),2-(7-氮杂苯并三氮唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯(HATU),2-(7-氮杂苯并三氮唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯(HATU),O-(苯并三唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯(HBTU)。在一些实施方案中,可以同时使用一种或多种缩合剂。缩合剂可以与催化剂结合使用。
本文所用的术语“室温”在本领域中是理解的,并且通常与温度(例如反应温度)相关,该温度约为进行反应的环境的温度,例如,在约20℃至约30℃的温度下。
本发明中涉及到的反应试剂和缩写如下所示:
Boc    叔丁氧基羰基
DIBAL  二异丁基氢化铝
DME    二甲醚
DMF    N,N-二甲基甲酰胺
EA     乙酸乙酯
H 2O    水
OTf    三氟甲磺酸基
OTs    对甲苯磺酰基
OMs    甲基磺酰基
PE     石油醚
以下通过实施例形式的具体实施方式,对本发明的上述内容再作进一步的详细说明。虽然本发明将结合列举的实施方案来描述,但应理解其不意图将本发明限于那些实施方案。本发明意图覆盖可以包括在本发明范围内的所有替代、修改以及等同物。本领域技术人员将认识到,与本文所描述的方法和材料类似或等同的许多方法和材料可用于实践本发明。本发明决不限于所述的方法和材料。在一篇或多篇并入的文献、专利和类似材料与本申请(包括但不限于定义的术语、术语用法、描述的技术等)不同或矛盾的情况下,以本申 请为准。
具体实施方式
本发明具体实施方式中使用的原料、设备均为已知产品,通过购买市售产品获得。
1.叔丁基N-[(1R)-3-羟基-1-甲基-丙基]氨基甲酸酯的制备
Figure PCTCN2019120441-appb-000009
将(R)-3-氨基丁醇(50g,561mmol)溶于甲醇(500mL),冰浴下滴加二碳酸二叔丁酯(128g,589mmol)。室温下搅拌1小时。减压蒸除溶剂,得叔丁基N-[(1R)-3-羟基-1-甲基-丙基]氨基甲酸酯(100g,528mmol,产率94.2%)直接用于下一步反应。
MS(ESI)m/z=190(M+1) +
2.叔丁基(4R)-4-甲基-1,2,3-氧硫氮杂环己烷-3-甲酸2-氧的制备
Figure PCTCN2019120441-appb-000010
将咪唑(143.7g,2.11mol)溶于干燥二氯甲烷(1000ml),加入三乙胺(160g,1.59mol,221mL),冷却至-40℃,滴加二氯亚砜(75g,634mmol,46mL),滴加完毕(30min)后,将叔丁基N-[(1R)-3-羟基-1-甲基-丙基]氨基甲酸酯(100g,528mmol)溶于干燥二氯甲烷(300ml)。滴加完毕(1小时)后,缓慢升温至室温,室温下搅拌4小时。用二氯甲烷和水萃取,再将水相用二氯甲烷萃取一次,合并有机相,用无水硫酸钠干燥,减压蒸除溶剂。得叔丁基(4R)-4-甲基-1,2,3-氧硫氮杂环己烷-3-甲酸2-氧(104g,442mmol,产率84%)直接用于下一步反应。
3.叔丁基(4R)-4-甲基-1,2,3-氧硫氮杂环己烷-3-甲酸2,2-二氧的制备
Figure PCTCN2019120441-appb-000011
冰浴下将叔丁基叔丁基(4R)-4-甲基-1,2,3-氧硫氮杂环己烷-3-甲酸2-氧(100g,340mmol)溶于乙腈(1000mL),依次加入氯化钌(282mg,1.36mmol),高碘酸钠(116g,544mmol)和水(800mL),在冰浴下搅拌2小时,减压蒸除乙腈,冷却至室温,过滤,固体用水洗涤两次(500mL)。得叔丁基(4R)-4-甲基-1,2,3-氧硫氮杂环己烷-3-甲酸2,2-二氧(71g,282mmol,产率83%)直接用于下一步反应。
4.(R)-叔丁基(4-(4,4,5,5-四甲基-1,3,2-二氧硼酸盐-2-基)丁烷-2-基)氨基甲酸酯的制备
Figure PCTCN2019120441-appb-000012
将叔丁基(4R)-4-甲基-1,2,3-氧硫氮杂环己烷-3-甲酸2,2-二氧(69g,274mmol)溶于DMF(500mL),依次加入联硼酸频哪醇酯(83.7g,329mmol),碘化亚铜(5.23g,27.5mmol),三苯基膦(9.36g,35.7mmol),四丁基碘化胺(152g,412mmol),叔丁醇锂(43.9g,549mmol)。氮气保护,室温下搅拌3小时,加入乙酸乙酯(1000mL)和水(1500mL)萃取,有机相用饱和食盐水洗涤两次,减压蒸除溶剂,柱层析纯化(PE/EA=8/1)得(R)-叔丁基(4-(4,4,5,5-四甲基-1,3,2-二氧硼酸盐-2-基)丁烷-2-基)氨基甲酸酯(76g,253mmol,产率93%)直接用于下一步反应。
MS(ESI)m/z=300(M+1) +,244(M+1-56) +
5.钾(R)-(3-((叔丁氧羰基)氨基)丁基)三氟硼酸盐的制备
Figure PCTCN2019120441-appb-000013
将(R)-叔丁基(4-(4,4,5,5-四甲基-1,3,2-二氧硼酸盐-2-基)丁烷-2-基)氨基甲酸酯(75g,251mmol)溶于四氢呋喃(500mL),依次加入氟化氢钾(78.2g,1.00mol)和水(150mL)。室温下搅拌10小时,减压蒸除溶剂,固体用热的丙酮洗涤,滤液旋干,用PE/EA=10/1打浆洗涤,过滤,得到钾(R)-(3-((叔丁氧羰基)氨基)丁基)三氟硼酸盐(51g,182mmol,产率73%)固体直接用于下一步反应。
实施例1:
Figure PCTCN2019120441-appb-000014
步骤1:(R)-N-((2-氯-5-氟吡啶-3-基)亚甲基)-2-甲基丙烷-2-亚磺酰胺的制备
Figure PCTCN2019120441-appb-000015
将2-氯-3-甲酰基-5-氟吡啶(7.00g,43.9mmol)溶于DCM(70mL),依次加入(R)-(+)-叔丁基亚磺酰胺(5.58g,46.1mmol)、碳酸铯(10.01g,30.7mmol),室温下搅拌过夜,后处理加入65ml 15%的一水合柠檬酸(9.67g,46.1mmol),加入二氯甲烷萃取,水相再用二氯甲烷萃取两次,合并有机相用饱和食盐水洗涤一次,有机相用无水硫酸钠干燥,减压蒸除溶剂。得(R)-N-((2-氯-5-氟吡啶-3-基)亚甲基)-2-甲基丙烷-2-亚磺酰胺(11.2g,42.7mmol,产率96%)。
MS(ESI)m/z=263(M+1) +
步骤2:(R)-N-((R)-1-(2-氯-5-氟吡啶-3-基)-3-(1,3-二氧杂环己烷-2-基)丙基)-2-甲基丙烷-2-亚磺酰胺的制备
Figure PCTCN2019120441-appb-000016
将镁(2.04g,83.7mmol)加入反应瓶,加入90ml无水四氢呋喃,氮气保护,加入DIBAL(2M,83.7uL),将2-(2-溴乙基)-1,3-二氧杂环己烷(16.3g,83.7mmol)溶于无水四氢呋喃中,缓慢滴加至反应体系中,滴加完毕后室温下搅拌30分钟,将格式试剂混合物冷却至-40℃ 下搅拌10分钟,将(R)-N-((2-氯-5-氟吡啶-3-基)亚甲基)-2-甲基丙烷-2-亚磺酰胺(11g,41.9mmol)溶于20ml无水四氢呋喃中,滴加至反应体系中,-40℃下搅拌2小时。后处理:-10℃下,将体系倒入15%的柠檬酸水溶液中,搅拌15分钟,用甲基叔丁基醚萃取两次,合并有机相,用饱和食盐水洗涤一次,有机相用无水硫酸钠干燥,减压蒸除溶剂,柱层析纯化(PE/EA=1/2)得到(R)-N-((R)-1-(2-氯-5-氟吡啶-3-基)-3-(1,3-二氧杂环己烷-2-基)丙基)-2-甲基丙烷-2-亚磺酰胺(15.1g,39.9mmol,产率95%)。
MS(ESI)m/z=379(M+1) +
步骤3:(R)-2-氯-5-氟-3-(吡咯烷-2-基)吡啶的制备
Figure PCTCN2019120441-appb-000017
将(R)-N-((R)-1-(2-氯-5-氟吡啶-3-基)-3-(1,3-二氧杂环己烷-2-基)丙基)-2-甲基丙烷-2-亚磺酰胺(15g,39.6mmol)溶于三氟乙酸(62mL)中,加入水(15mL),在室温下搅拌1h,将三乙基硅烷(14.0g,120mmol,19.2mL)滴加至反应体系中,室温下搅拌3h。后处理:将体系溶剂旋干,用甲基叔丁基醚和水溶液萃取,水相再用甲基叔丁基醚萃取两次,合并有机相用1M的稀盐酸洗涤,然后水相用50%的氢氧化钠溶液调节PH至12左右,用二氯甲烷萃取两次,合并有机相,用饱和食盐水洗涤一次,用无水硫酸钠干燥,减压蒸除溶剂得到(R)-2-氯-5-氟-3-(吡咯烷-2-基)吡啶(6.6g,33.6mmol,产率84%)直接用于下一步反应。
MS(ESI)m/z=201(M+1) +
步骤4:(R)-乙基5-(2-(2-氯-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯的制备
Figure PCTCN2019120441-appb-000018
将(R)-2-氯-5-氟-3-(吡咯烷-2-基)吡啶(6.7g,33.4mmol)溶于正丁醇(35mL),加入N,N-二异丙基乙胺(43.1g,334mmol)和5-氯吡唑并[1,5-A]嘧啶-3-羧酸乙酯(7.53g,33.4mmol),120℃下搅拌1小时,减压蒸除溶剂。柱层析纯化(PE/EA=1/1)得(R)-乙基5-(2-(2-氯-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(12.6g,32.3mmol,产率96%)
MS(ESI)m/z=390(M+1) +
步骤5:乙基5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯的制备
Figure PCTCN2019120441-appb-000019
将(R)-乙基5-(2-(2-氯-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(6.89g,17.7mmol)溶于DME/H 2O=4/1(100mL),加入钾(R)-(3-((叔丁氧羰基)氨基)丁基)三氟硼酸盐(19.5g,53.0mmol),1,1'-二(二苯膦基)二茂铁二氯化钯(II)(1.29g,1.77mmol)和碳酸钾(7.32g,53.0mmol),氮气保护,100℃下搅拌10小时,再补加1,1'-二(二苯膦基)二茂铁二氯化钯(II)(1.29g,1.77mmol)和碳酸钾(7.32g,53.0mmol)。100℃下继续反应4h,减压蒸除溶剂。加入二氯甲烷打浆洗涤,硅藻土填充过滤,滤液旋干,柱层析纯化(PE/EA=1/1)得乙基5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(7.52g,14.3mmol,产率81%)。
MS(ESI)m/z=527(M+1) +
1HNMR(400MHz,CD 3OD):δ=8.13-8.45(m,3H),7.20(dd,J=2.8,9.6Hz,1H),6.59(br,0.61H),5.95(br,0.33H),5.48(br,0.61H),5.23(br,0.33H),4.02-4.30(m,3H),3.66-3.92(m,2H),3.00-3.06(m,2H),2.54(m,1H),1.88-2.24(m,5H),1.41(s,9H),1.25(br,6H).
步骤6:5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸的制备
Figure PCTCN2019120441-appb-000020
将乙基5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(4.6g,8.74mmol)溶于THF/MeOH/H 2O=2/1/1(40mL),加入氢氧化钠(1.05g,26.21mmol)溶液,65℃下搅拌10小时,加入1N的稀盐酸调节PH至5左右,后用乙酸乙酯萃取,再将水相用乙酸乙酯萃取两次,合并有机相,用无水硫酸钠干燥,减压蒸除溶剂得5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸(4.4g,7.94mmol,产率91%)并直接用于下一步反应。
MS(ESI)m/z=499(M+1) +
步骤7:5-((R)-2-(2-((R)-3-氨基丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸的制备
Figure PCTCN2019120441-appb-000021
将5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸(4.4g,8.83mmol)溶于4M的盐酸乙酸乙酯(40mL),室温下搅拌1小时,减压蒸除溶剂。得5-((R)-2-(2-((R)-3-氨基丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸(4.0g,8.5mmol,产率96%)并直接用于下一步反应。
MS(ESI)m/z=399(M+1) +
步骤8:LOXO-195的制备
Figure PCTCN2019120441-appb-000022
将5-((R)-2-(2-((R)-3-氨基丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸(4g,8.49mmol)溶于N,N-二甲基甲酰胺(180mL),冰浴下依次加入1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐(3.2g,17.0mmol),1-羟基苯并三唑(2.3g,17.0mmol),三乙胺(4.3g,42.5mmol)。45℃下搅拌10小时。用乙酸乙酯萃取,再将水相用乙酸乙酯萃取两次,合并有机相,用无水硫酸钠干燥,减压蒸除溶剂。柱层析纯化(DCM/MeOH=30/1),减压蒸除溶剂得到固体,加入乙酸异丙酯(1g/5mL)65℃下搅拌过夜,过滤,固体50℃烘干(10小时),得LOXO-195(2.27g,5.95mmol,产率70%)。
MS(ESI)m/z=381(M+1) +
1HNMR(400MHz,CDCl 3):δ=8.38(d,J=8.4Hz,1H),8.31(d,J=2.8Hz,1H),8.29(d,J=7.6Hz,1H),8.23(s,1H),7.08(dd,J=2.8Hz,9.6Hz,1H),6.30(d,J=7.6Hz,1H),5.53-5.57(m,1H),4.37-4.43m,1H),3.93-3.99(m,1H),3.78-3.84(m,1H),3.39-3.45(m,1H),2.81-2.91(m,2H),2.52-2.60(m,1H),2.35-2.45(m,1H),2.14-2.27(m,2H),1.85-1.93(m,1H),1.33(d,J=6.4Hz,1H). 13CNMR(100MHz,CDCl 3):162.3,159.4,156.9,154.1,154.0,138.6,136.4,136.3,136.2,119.1,119.0,102.6,97.9,58.4,48.8,43.0,34.6,32.9,25.0,24.3,21.5.
实施例2:
Figure PCTCN2019120441-appb-000023
步骤1至步骤4按照实施例1中的步骤1至步骤4进行。
步骤5:乙基5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯的制备
Figure PCTCN2019120441-appb-000024
将(R)-乙基5-(2-(2-氯-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(50mg,129umol)溶于DME/H 2O=4/1(1mL),加入(R)-叔丁基(4-(4,4,5,5-四甲基-1,3,2-二氧硼酸盐-2-基)丁烷-2-基)氨基甲酸酯(96mg,0.32mmol),1,1'-二(二苯膦基)二茂铁二氯化钯(II)(4.71mg,6.45umol)和碳酸钾(53.4mg,387umol),氮气保护,100℃下搅拌10小时,减压蒸除溶剂,柱层析纯化(PE/EA=1/1)得乙基5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(2mg,3.8umol,产率3%)。
MS(ESI)m/z=527(M+1) +
步骤6至步骤8按照实施例1中的步骤6至步骤8。
实施例3:
Figure PCTCN2019120441-appb-000025
步骤1-4:(R)-乙基5-(2-(5-氟-2-甲氧基吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯的制备
Figure PCTCN2019120441-appb-000026
根据实施例1中步骤1-4中合成方法,以(R)-5-氟-2-甲氧基-3-(四氢吡咯-2-基)吡啶为原料代替实施例1中步骤1的2-氯-3-甲酰基-5-氟吡啶合成(R)-乙基5-(2-(5-氟-2-甲氧基吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯。
MS(ESI)m/z=386(M+1) +
步骤5:(R)-乙基5-(2-(5-氟-2-羟基吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯的制备
Figure PCTCN2019120441-appb-000027
将(R)-乙基5-(2-(5-氟-2-甲氧基吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(450mg,1.17mmol)溶于醋酸(2mL)中,再加入30%的氢溴酸醋酸溶液(2.9g,11.68mmol)。90℃下搅拌1小时,减压蒸除溶剂,柱层析纯化(PE/EA=1/1)得到(R)-乙基5-(2-(5-氟-2-羟基吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(421mg,1.13mmol,产率96%)。
MS(ESI)m/z=372(M+1) +
步骤6:(R)-乙基5-(2-(5-氟-2-(((三氟甲基)磺酰基)氧)吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯的制备
Figure PCTCN2019120441-appb-000028
将(R)-乙基5-(2-(5-氟-2-羟基吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(420mg,1.13mmol)溶于二氯甲烷(10mL),加入三乙胺(137mg,1.36mmol)和N-苯基双(三氟甲烷)磺酰亚胺(444mg,1.24mmol)。室温下搅拌10小时,减压蒸除溶剂,柱层析纯化(PE/EA=1/1)得到(R)-乙基5-(2-(5-氟-2-(((三氟甲基)磺酰基)氧)吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(600mg,1.07mmol,产率94.8%)。
MS(ESI)m/z=504(M+1) +
步骤7:苯基5-氟-2-羟基苯基(甲基)氨基甲酸酯的制备
Figure PCTCN2019120441-appb-000029
将(钾(R)-(3-((叔丁氧羰基)氨基)丁基)三氟硼酸盐(134mg,479umol)溶于DME/H 2O=4/1(2mL),加入1,1'-二(二苯膦基)二茂铁二氯化钯(II)(11.7mg,16.0umol),(R)-乙基5-(2-(5-氟-2-(((三氟甲基)磺酰基)氧)吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(80.3mg,159umol)和碳酸钾(66mg,479umol),氮气保护,100℃下搅拌10小时,减压蒸除溶剂。柱层析纯化(PE/EA=1/1)得乙基5-((R)-2-(2-((R)-3-((叔丁氧羰基)氨基)丁基)-5-氟吡啶-3-基)吡咯烷-1-基)吡唑并[1,5-a]嘧啶-3-羧酸乙酯(12mg,23.9umol,产率5%)。
MS(ESI)m/z=527(M+1) +
步骤8-10:LOXO-195的制备
Figure PCTCN2019120441-appb-000030
按照实施例1中步骤6至步骤8的合成方法,得到LOXO-195化合物。
实施例1采用式(Ⅱ)结构化合物与式(Ⅲ)结构化合物反应制备式(Ⅴ)结构化合物,实施例1中式(Ⅱ)结构化合物R 1取代基为Cl,进而制备化合物LOXO-195,所得目标产物LOXO-195的收率为36.4%。本方法制备得到的LOXO-195收率高。
综上所述,本发明提供了一种制备TRK激酶抑制剂化合物LOXO-195及其盐的方法,该方法安全、操作方便、产物收率高,适合小规模或者大规模的工业化制造。

Claims (30)

  1. 一种TRK激酶抑制剂化合物的中间体化合物,如式(Ⅷ)所示:
    Figure PCTCN2019120441-appb-100001
    其中R 3为H,C 1-C 6烷基,
    R 2为氨基保护基。
  2. 根据权利要求1所述的中间体化合物,其特征在于:R 2为苄氧羰基、叔丁氧基羰基、烯丙氧羰基、三甲基硅乙氧羰基、甲(或乙)氧羰基、邻苯二甲氧基、对甲苯磺酰基、三氟乙酰基、邻硝基苯磺酰基、苯甲酰基、三苯基甲基、对甲氧基苄基、苄基、2,4-二甲氧基苄基。
  3. 根据权利要求1或2所述的中间体化合物,其特征在于:式(Ⅷ)中间体化合物为:
    Figure PCTCN2019120441-appb-100002
  4. 一种用于制备式(V)化合物或其盐的方法:其特征在于:它是将式(Ⅱ)化合物与式(Ⅲ)化合物或式(Ⅱ)化合物与式(Ⅳ)化合物在金属催化剂的作用下反应,得式(V)化合物;
    所述式(Ⅱ)的结构式为:
    Figure PCTCN2019120441-appb-100003
    式(Ⅲ)的结构式为:
    Figure PCTCN2019120441-appb-100004
    式(Ⅳ)的结构式为
    Figure PCTCN2019120441-appb-100005
    式(V)化合物的结构式为
    Figure PCTCN2019120441-appb-100006
    其中,R 1为F、Cl、Br、I、OTf、OMs、OTs;
    X为F、Cl、Br、I;
    R 2为氨基保护基;
    M为碱金属、铁、镁、钙、铜;
    n为M金属离子所带电荷数,为正整数;
    R为H、C 1-C 10烷基或C 1-C 10取代烷基,其中所述的C 1-C 10烷基的取代基选自C1-C10烷氧基;所述2个OR可以构成为四-十元环。
  5. 根据权利要求4所述的方法,其特征在于:所述反应在碱的作用下进行。
  6. 根据权利要求5所述的方法,其特征在于:所述的碱选自金属碳酸盐、碱金属磷酸盐、碱金属氢化物、碱金属醇盐或碱金属氢氧化物。
  7. 根据权利要求6所述的方法,其特征在于:所述的碱为碳酸钾。
  8. 根据权利要求4所述的方法,其特征在于:所述碱金属M选自锂、钠、钾。
  9. 根据权利要求4所述的方法,其特征在于:所述n为1,2,3,4。
  10. 根据权利要求4所述的方法,其特征在于:所述式(Ⅳ)化合物为
    Figure PCTCN2019120441-appb-100007
  11. 根据权利要求4所述的方法,其特征在于:所述金属催化剂选自钯催化剂、镍催化剂、铜催化剂。
  12. 根据权利要求11所述的方法,其特征在于:所述钯催化剂为1,1'-二(二苯膦基)二茂铁二氯化钯(II)。
  13. 根据权利要求4至12任一项所述的方法,其特征在于:所述反应在水和有机溶剂的混合溶剂中进行。
  14. 根据权利要求13所述的方法,其特征在于:所述有机溶剂选自醚、四氢呋喃、醇。
  15. 根据权利要求14所述的方法,其特征在于:所述醚为二甲醚。
  16. 根据权利要求14或15所述的方法,其特征在于:其中水:二甲醚体积比为1:4。
  17. 根据权利要求4所述的方法,其特征在于:所述R 2选自苄氧羰基、叔丁氧基羰基、烯丙氧羰基、三甲基硅乙氧羰基、甲(或乙)氧羰基、邻苯二甲氧基、对甲苯磺酰基、三氟乙酰基、邻硝基苯磺酰基、苯甲酰基、三苯基甲基、对甲氧基苄基、苄基、2,4-二甲氧基苄基。
  18. 根据权利要求17所述的方法,其特征在于:所述R 2为叔丁氧基羰基。
  19. 一种制备式(I)化合物或其盐的方法,其特征在于:它包括如下步骤:
    Figure PCTCN2019120441-appb-100008
    a、将权利要求4-18任意一项所述方法制备的式(V)经酯水解得到式(Ⅵ)化合物;
    b、再式(Ⅵ)化合物经脱保护基R 2得到式(Ⅶ)化合物;
    c、将式(Ⅶ)化合物经环化得到式(Ⅰ)化合物。
  20. 根据权利要求19所述的方法,其特征在于:所述a步骤反应在强碱中进行。
  21. 根据权利要求20所述的方法,其特征在于:所述强碱选自氢氧化物和醇盐。
  22. 根据权利要求21所述的方法,其特征在于:所述强碱为氢氧化钠。
  23. 根据权利要求22所述的方法,其特征在于:所述a步骤反应在四氢呋喃、醇、水或其混合溶剂中进行。
  24. 根据权利要求23所述的方法,其特征在于:所述醇为甲醇。
  25. 根据权利要求23或24任意一项所述的方法,其特征在于:所述溶剂为四氢呋喃:甲醇:水的体积比为2:1:1。
  26. 如权利要求19所述的方法,其特征在于:所述b步骤反应中脱去氨基保护基R 2在酸性条件下进行。
  27. 如权利要求26所述的方法,其特征在于:所述酸为盐酸。
  28. 根据权利要求19所述的方法,其特征在于:所述c步骤反应中环化是在缩合剂存在条件下进行。
  29. 根据权利要求28所述的方法,其特征在于:所述缩合剂选自二环己基碳,Ν,Ν'-二异丙基,N-(3-二甲基氨基丙基)-N'-乙基碳二亚胺,1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐,N,N’-羰基二咪唑,2-(7-氮杂苯并三氮唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯,1-(苯并三唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯。
  30. 根据权利要求29所述的方法,其特征在于:所述缩合剂为1-(3-二甲氨基丙基)-3-乙基碳二亚胺盐酸盐或1-(苯并三唑-1-基)-N,N,N’,N’-四甲基脲六氟磷酸酯。
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