WO2023246846A1 - 一种非螯合性非还原性铁死亡抑制剂及其制备方法和用途 - Google Patents

一种非螯合性非还原性铁死亡抑制剂及其制备方法和用途 Download PDF

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WO2023246846A1
WO2023246846A1 PCT/CN2023/101621 CN2023101621W WO2023246846A1 WO 2023246846 A1 WO2023246846 A1 WO 2023246846A1 CN 2023101621 W CN2023101621 W CN 2023101621W WO 2023246846 A1 WO2023246846 A1 WO 2023246846A1
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compound
ring
unsubstituted
substituted
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杨胜勇
李琳丽
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成都恒昊创新科技有限公司
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P39/00General protective or antinoxious agents
    • A61P39/06Free radical scavengers or antioxidants
    • 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

Definitions

  • the invention belongs to the technical field of chemically synthesized drugs, and specifically relates to a non-chelating non-reducing ferroptosis inhibitor and its preparation method and use.
  • Ferroptosis is an irreversible phenomenon in the life process.
  • This novel form of cell death is iron-dependent and is often accompanied by accumulation of intracellular iron and lipid peroxides.
  • Ferroptosis is significantly different from apoptosis, necrosis and autophagy in cell morphology and function. Morphologically, the morphological characteristics of ferroptosis are reduction in mitochondrial volume, reduction in mitochondrial membrane density, reduction or disappearance of mitochondrial cristae, rupture of mitochondrial outer membrane, etc. .
  • ferroptosis plays an important role in the occurrence and development of many diseases, and has become a major cause of neurodegeneration, tissue ischemia-reperfusion injury, stroke, cardiovascular disease, renal failure, and Alzheimer's disease.
  • Parkinson's disease acute kidney injury, doxorubicin (DOX)-induced cardiotoxicity, acetaminophen-induced acute liver injury and other related diseases are hot topics in the treatment and improvement of prognosis. Therefore, the development of novel ferroptosis inhibitors is a potential approach to treat these diseases.
  • DOX doxorubicin
  • ferroptosis are antioxidants or iron chelators. Including Ferrostatin-1, Liproxstatin-1, Zileuton, CPO, DFO, Deferasirox and Deferiprone, etc. While the redox balance in the body's internal environment is critical to health, disrupting the redox balance by non-selectively reducing oxidation states may lead to diseases such as cancer and aging. For example, persistent reducing stress or lack of reactive oxygen species can hinder insulin signal transduction and glucose homeostasis, blunt the positive impact of exercise on insulin sensitivity, and induce cardiomyopathy, obesity, or diabetes (Chinese Modern Applied Pharmacy, 2022 ,39(01):127-133.).
  • iron is an essential trace element in organisms and the active center of many biological enzymes. It is essential for normal cells, tumor cells and microbial cells. Many molecules with chelating or metal-binding properties can affect all involved metal ion process. Therefore, the use of iron chelators inevitably leads to side effects of anemia (e.g., iron deficiency anemia) and many metabolic diseases. Therefore, it is very necessary and of great significance to develop ferroptosis inhibitors that are neither antioxidants nor iron chelators.
  • anemia e.g., iron deficiency anemia
  • One of the objects of the present invention is to provide a non-chelating, non-reducing compound, or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof;
  • One of the objects of the present invention is to provide a pharmaceutical preparation comprising the above compound, or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof and a commonly used pharmaceutical carrier;
  • Another object of the present invention is to provide a preparation method for the above-mentioned compound, or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof, or a pharmaceutical preparation thereof;
  • Another object of the present invention is to provide the above-mentioned compound, or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof, or a pharmaceutical preparation thereof for use as a ferroptosis inhibitor;
  • Another object of the present invention is to provide the use of the above-mentioned compounds, or pharmaceutically acceptable salts thereof, or stereoisomers thereof, or pharmaceutical preparations thereof, in the treatment and/or prevention of ferroptosis-related diseases, such as neurodegeneration, Tissue ischemia-reperfusion injury, stroke, cardiovascular, renal failure, liver damage, and diabetic complications and other ferroptosis-related diseases.
  • ferroptosis-related diseases such as neurodegeneration, Tissue ischemia-reperfusion injury, stroke, cardiovascular, renal failure, liver damage, and diabetic complications and other ferroptosis-related diseases.
  • the present invention provides the following technical solutions:
  • n is selected from 1 or 2;
  • R 1 is independently selected from hydrogen atom, halogen, hydroxyl, nitro, amino, carboxyl, cyano group, substituted or unsubstituted C1-C6 alkoxy group, substituted or unsubstituted C1-C6 alkyl group, substituted or Unsubstituted benzene ring; alternatively, two adjacent R 1s are connected to each other to form a benzene ring;
  • Ring A is selected from substituted or unsubstituted five- or six-membered aryl, substituted or unsubstituted five- or six-membered heteroaryl, substituted or unsubstituted five- or six-membered heterocyclyl, substituted or unsubstituted N-containing difused ring group or three fused ring group; the substituent of the ring A is selected from halogen, hydroxyl, nitro, amino, carboxyl, cyano, substituted or unsubstituted C1-C6 alkoxy, One or more of substituted or unsubstituted C1-C6 alkyl groups, substituted or unsubstituted five- or six-membered N-containing heterocyclic groups;
  • Ring B is selected from substituted or unsubstituted five- or six-membered aryl groups, substituted or unsubstituted five- or six-membered heteroaryl groups, and substituted or unsubstituted five- or six-membered heterocyclyl groups; the The substituent is selected from one or more of halogen, hydroxyl, nitro, amino, carboxyl, cyano, substituted or unsubstituted C1-C6 alkoxy, substituted or unsubstituted C1-C6 alkyl;
  • heteroatoms of the heterocyclic group and heteroaryl group are selected from one or more types of N, O, and S;
  • the substituent of the C1-C6 alkoxy group is independently selected from one or more of halogen, hydroxyl, nitro, amino, carboxyl, cyano, C1-C6 alkyl and C1-C6 alkoxy. kind;
  • the substituent of the C1-C6 alkyl group is independently selected from one or more of halogen, hydroxyl, nitro, amino, carboxyl, cyano, C1-C6 alkyl and C1-C6 alkoxy. ;
  • the substituents of the benzene ring are independently selected from one or more of halogen, hydroxyl, nitro, amino, carboxyl, cyano, C1-C6 alkyl and C1-C6 alkoxy;
  • the five- or six-membered N-containing heterocyclic group substituent is independently selected from one of halogen, hydroxyl, nitro, amino, carboxyl, cyano, C1-C6 alkyl and C1-C6 alkoxy. Kind or variety.
  • the number of heteroatoms contained in the heterocyclic group or heteroaryl group is 1, 2 or 3.
  • the heterocyclic group in the present invention is an aliphatic heterocyclic group.
  • the N-containing difused ring group is a group formed by the fusion of two five- or six-membered heteroaryl groups, or is a five- or six-membered heteroaryl group and a five- or six-membered aromatic group.
  • the N-containing trifused ring group is a group formed by the fusion of three five- or six-membered heteroaryl groups, or a five- or six-membered heteroaryl group and a five- or six-membered aryl group fused together.
  • the total number of heteroaryl groups and aryl groups is 3.
  • Ring A is phenyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, oxazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl or triazinyl; or any two of the above groups One or three N-containing fused ring groups formed by fusion; the ring A is substituted or unsubstituted.
  • Ring B is phenyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, oxazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, tetrahydropyridyl, tetrahydropyran base, piperidinyl or piperazinyl; the ring B is substituted or unsubstituted.
  • Ring A is phenyl, pyrazolyl, pyridyl, indolyl, benzimidazolyl, benzothiazolyl or pyrrolopyridyl; the ring A is substituted or unsubstituted.
  • Ring B is phenyl, pyridyl, pyrimidinyl, pyrazolyl, tetrahydropyridyl or tetrahydropyranyl; the ring B is substituted or unsubstituted.
  • the substituents of the ring A are selected from halogen, hydroxyl, nitro, amino, carboxyl, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, hexagonal One or more of hydropyridyl and N-methylhexahydropyridyl;
  • the substituents of ring B are selected from halogen, hydroxyl, nitro, amino, carboxyl, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, methyl One or more of oxy, ethoxy, n-propoxy, n-butoxy.
  • n is selected from 1 or 2;
  • R 1 is independently selected from hydrogen atoms, halogens, hydroxyl groups, nitro groups, C1-C6 alkoxy groups, C1-C6 alkyl groups, and benzene rings; or, two adjacent R 1s are connected to each other to form a benzene ring;
  • Ring A is selected from:
  • Ring B is selected from:
  • the ring A is selected from:
  • the ring B is selected from:
  • the ring B is selected from:
  • the compound represented by the above formula (I), or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof, wherein the compound can be selected from the following compounds:
  • a pharmaceutical preparation is provided, which is prepared by using any of the above-mentioned compounds, or salts thereof, or stereoisomers thereof as active ingredients, and adding commonly used pharmaceutical carriers. pharmaceutical preparations.
  • the pharmaceutical preparations provided are oral preparations and intravenous injection preparations.
  • the ferroptosis inhibitor is Targeted drugs for inhibiting ferroptosis.
  • the above-mentioned compound, or its pharmaceutically acceptable salt, or its stereoisomer, or the above-mentioned pharmaceutical preparation is provided for treating and/or preventing neurodegeneration and tissue ischemia-reperfusion injury. , stroke, cardiovascular, renal failure, liver damage and diabetic complications and other diseases.
  • the neurodegenerative diseases include Parkinson's syndrome and Alzheimer's disease; the stroke includes ischemic stroke and hemorrhagic stroke.
  • halogen refers to fluorine, chlorine, bromine or iodine, preferably chlorine.
  • C1-C6 alkyl used in the present invention refers to a linear or branched alkyl group with 1 to 6 carbon atoms, preferably methyl or ethyl.
  • pharmaceutically acceptable salt used in the present invention refers to a salt of a compound of the present invention, prepared from a compound having a specific substituent found in the present invention and a pharmaceutically acceptable acid or base.
  • stereoisomer refers to compounds that have the same chemical composition but different spatial arrangements of atoms and groups. These include enantiomers, diastereomers, geometric isomers, atropisomers or conformational isomers.
  • pharmaceutically commonly used carrier refers to any preparation carrier or medium that can deliver an effective amount of the active substance of the present invention, does not interfere with the biological activity of the active substance, and has no toxic side effects on the host or patient.
  • Representative carriers include Water, oil, vegetables and minerals, cream base, lotion base, ointment base, etc. These matrices include suspending agents, viscosifiers, transdermal penetration enhancers, etc.
  • non-chelating used in the present invention refers to the inability to prevent lipid peroxidation caused by the Fenton reaction by chelating iron.
  • non-reducing used in the present invention means that it does not have antioxidant activity and cannot prevent damage to membrane lipids through a reducing mechanism, thereby inhibiting cell death.
  • the compounds of the present invention may also contain unnatural proportions of atomic isotopes at one or more of the atoms that make up such compounds.
  • compounds can be radiolabeled with radioisotopes such as deuterium (D), tritium ( 3H ), iodine-125 ( 125I ), or carbon-14 ( 14C ). All isotopic variations of the compounds of the invention, whether radioactive or not, are included within the scope of the invention.
  • the inventors have obtained a batch of non-chelating and non-reducing new ferroptosis inhibitors through creative labor screening, which solves the potential risks that may exist in current chelating agents and antioxidants, and provides a method for clinical treatment of ferroptosis-related diseases. A safer choice.
  • the inventor also tested the inhibitory activity of representative compound 1 against 401 kinases including PI3K. The results showed that compound 1 had no obvious inhibitory effect on these targets, indicating that the compound of the present invention has good selectivity.
  • a new non-chelating, non-reducing ferroptosis inhibitor is a batch of non-chelating and non-reducing new ferroptosis inhibitors through creative labor screening, which solves the potential risks that may exist in current chelating agents and antioxidants, and provides a method for clinical treatment of ferroptosis-related diseases. A safer choice.
  • the inventor also tested the inhibitory activity of representative compound 1 against 401 kinases including PI3K. The results showed that compound 1 had no obvious inhibitory effect on these
  • FIG. 1 Compound 1 of the present invention alleviates acetaminophen-induced acute liver injury.
  • Compound 21 was prepared using a synthetic method similar to Example 1, with a yield of 51%.
  • Compound 29 was prepared using a synthetic method similar to Example 1, with a yield of 51%.
  • Compound 36 was prepared using a synthesis method similar to Example 1, with a yield of 59%.
  • Comparative Example 1 was prepared with a yield of 52%.
  • the Ferroptosis screening model mainly uses the MTT cell viability detection method. First, culture the fibrosarcoma cell line HT1080 in a dish, inoculate a specific number of cells in the logarithmic growth phase into a 96-well plate (3000 cells/well), 100 ⁇ L per well, and then place them in a 37°C, 5% CO2 environment Culture in an incubator to allow cells to adhere to the wall. After 24 hours, add 100 ⁇ L of a certain concentration of compounds prepared in the designated medium and the Ferroptosis inducer Erastin (final concentration 10 ⁇ M). Set up 3 duplicate wells for each compound to ensure the accuracy of the results, and set up a negative control group and a positive control group.
  • Control group (Fer-1 15 ⁇ M), blank control group and solvent control group. After adding the medicine, place it in the incubator and incubate for 48 hours. On the day of the MTT experiment, prepare the MTT test solution (5 mg/mL MTT solution dissolved in physiological saline, stored in the dark at 4°C), add 20 ⁇ L MTT solution to each well, and place it in the incubator to continue culturing for 2-4 hours. Then, each Add 50 ⁇ L of 20% SDS solution (dissolved in MiliiQ water, add 1% concentrated hydrochloric acid) to the well, put it in the incubator overnight, and use a microplate reader to detect the absorbance value at 570 nm the next day to calculate Inhibition rate of ferroptosis by drugs. Generally, the absorbance value of the control group should be between 0.8-1.2 as normal value. After obtaining the absorbance value data, calculate the average value of three replicate wells, and use the following formula to calculate the inhibition rate:
  • Inhibition rate % [1-(A experimental group-A blank)/(A solvent-A blank)]*100%
  • the EC 50 value of the compound 1-48 of the present invention is between 0.01-6.3 ⁇ M, all less than 10 ⁇ M, proving that the compound 1-48 prepared by the present invention has a good inhibitory effect on Ferroptosis and can be used to prepare ferroptosis inhibitors. agent, and the EC 50 of compound 22 and compound 46 were significantly better than the positive control Fer-1, showing excellent ferroptosis inhibition effect.
  • the EC 50 value of Comparative Example 1 is greater than 10 ⁇ M. Compared with Compound 21 of the present invention, the difference is only whether there is benzene ring substitution, and the absence of benzene ring substitution leads to the complete loss of ferroptosis inhibitory activity. Therefore, in the mother core structure of the present invention, Benzene ring substitution is essential for ferroptosis inhibitory activity.
  • compound 1 has a good inhibitory effect on Ferroptosis and can be used to prepare ferroptosis inhibitors.
  • Comparative Example 2 has no benzene ring substitution and loses its ferroptosis inhibitory activity.
  • the benzene ring substitution in the mother core structure of the present invention is essential for the ferroptosis inhibitory activity.
  • Test Example 2 Kinase inhibitory activity of compound 1 (10 ⁇ M) of the present invention against 401 kinds of kinases
  • Kinase profiling was performed using different recombinant kinase targets against compound 1 at 10 ⁇ M ATP.
  • Kinases tested include PI3K, FYN, MAPK, JAK, CDK, etc.
  • the calculation formula is as follows:
  • the positive reference is a reference substance with a %Ctrl value of 0, and the negative reference is DMSO (%Ctrl value is 100).
  • the results are shown in Table 3.
  • Test Example 3 Determination of non-chelating and non-reducing properties of Compound 1 and Compound 38 of the present invention
  • the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method was used to study the reduction properties.
  • the compound was prepared with methanol, pipetted into a 96-well plate, and then the DPPH solution was added. The mixture was incubated in the dark at room temperature for 10 minutes. Measure the absorbance at 517nm. Three independent experiments were repeated, and the results are shown in Figure A.
  • the chelating property of the compound was studied by using the property of iron and phenylazine to form colored complexes. Pipette the test compound solution, FeSO 4 solution and pyrazine solution into 100 ⁇ L distilled water, and incubate at room temperature for 5 min. Finally, sample A 562 was detected using a CLARIOstar multifunctional microplate reader (BMG Labtech, Germany). At the same time, Deferoxamine (DFO) and EDTA.2H 2 O were selected as positive controls, and DMSO was used as a blank control. Use A 562 in the blank control well as the standard value (100%) to calculate the relative amount of A 562 in the sample well, and the results are shown in Figure B.
  • DFO Deferoxamine
  • EDTA.2H 2 O EDTA.2H 2 O
  • Figure A shows that Compound 1 and Compound 38 of the present invention are non-reducing, while the positive control Fer-1 is reducing;
  • Figure B shows that Compound 1 and Compound 38 of the present invention do not have iron chelating properties, but remove iron. Amines and EDTA.2H 2 O have iron chelating properties.
  • the ferroptosis inhibitor prepared by the present invention is non-reducing and non-chelating, and can be used to prepare new non-reducing and non-chelating ferroptosis inhibitors.
  • Test Example 4 study of compound 1 of the present invention in animal models of liver injury.
  • mice Four-week-old male C57BL/6J mice were adaptively bred for 1 week. One day before the experiment, mice were fasted for 12 h. One hour after the mice were intraperitoneally injected with the compound solution, the experimental mice were injected with APAP (acetaminophen) solution (500 mg/kg) or physiological saline. After 6 hours, blood was taken from the orbit and the mouse serum samples were tested for ALT (alanine aminotransferase) and AST (aspartate aminotransferase). After the mice were euthanized, they were dissected, and the liver tissue was removed, washed with physiological saline, and immediately fixed in neutral formalin for more than 24 hours before HE staining.
  • the blank control group refers to the blank control without adding drugs and APAP
  • the solvent control group refers to the solvent group in which 500 mg/kg APAP is injected intraperitoneally into the mice. The results are shown in Figure 2.
  • Compound 1 can significantly inhibit cell death and inflammation in the liver tissue of C57BL/J6 mice in the APAP group ( Figure A), and it also significantly reduces the levels of aspartate aminotransferase (AST) in the serum ( Figure B) and Levels of alanine aminotransferase (ALT) (Panel C).
  • AST aspartate aminotransferase
  • ALT alanine aminotransferase
  • compound 1 prepared in the present invention showed good therapeutic effect compared with the positive control Fer-1. Therefore, the medicine of the present invention can be applied to the treatment of ferroptosis-related diseases.
  • the present invention synthesizes a non-chelating, non-reducing ferroptosis inhibitor.
  • This type of compound has a good inhibitory effect on ferroptosis and can be used to prepare ferroptosis inhibitors. It can also be used to prepare drugs for the treatment of neurodegeneration related to ferroptosis, tissue ischemia-reperfusion injury, stroke, cardiovascular disease, renal failure, liver damage, diabetic complications and other diseases, and has broad market prospects.

Abstract

本发明公开了一种式(I)所述的化合物及制备方法和用途,所述化合物或其药学上可接受的盐或其立体异构体为非螯合性非还原性,可用于铁死亡抑制剂及预防/治疗铁死亡相关疾病。

Description

一种非螯合性非还原性铁死亡抑制剂及其制备方法和用途
本申请要求于2022年06月23日提交中国专利局、申请号为202210716762.6、发明名称为“一种新型非螯合性非还原性铁死亡抑制剂及其制备方法和用途”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明属于化学合成药物技术领域,具体涉及一种非螯合性非还原性铁死亡抑制剂及其制备方法和用途。
背景技术
细胞死亡在生命过程中是不可逆转的现象,通过对细胞死亡的深入研究,Dixon等人在2012年发现一种新的细胞死亡并将其命名为“Ferroptosis”,即铁死亡。这种新型的细胞死亡是铁依赖的,通常伴随细胞内铁的积累和脂质过氧化物的累积。铁死亡在细胞形态和功能上明显不同于凋亡、坏死和自噬,形态学上,铁死亡的形态学特征是线粒体体积减少,线粒体膜密度降低,线粒体嵴减少或消失,线粒体外膜破裂等。
近年来,一系列研究发现,铁死亡在许多疾病的发生、发展中起着重要作用,已成为神经退行性、组织缺血再灌注损伤、脑卒中、心血管、肾衰竭、阿尔茨海默病、帕金森病、急性肾损伤、阿霉素(DOX)诱导的心脏毒性、对乙酰氨基酚诱导的急性肝损伤等相关疾病治疗和改善预后的研究热点。因此,开发新型的铁死亡抑制剂是治疗这些疾病的潜在方法。
目前,铁死亡小分子抑制剂大多数是抗氧化剂或铁螯合剂。包括Ferrostatin-1、Liproxstatin-1、Zileuton、CPO,DFO,Deferasirox和Deferiprone等。而身体内部环境中的氧化还原平衡对健康至关重要,通过非选择性地降低氧化态来打破氧化还原平衡可能会导致癌症和衰老等疾病。例如,持续性的还原应激或活性氧的缺乏,可以阻碍胰岛素信号转导和葡萄糖稳态,钝化运动对胰岛素敏感性的积极影响,引发心肌病、肥胖或糖尿病(中国现代应用药学,2022,39(01):127-133.)。大型临床试验证实,给予大剂量维生素E/C(抗氧化剂)并未改善患者临床预后,而较高剂量的维生素E甚至会导致动脉粥样硬化和血管功能恶化,可能与抗氧化剂过量导致的还原应激有关(中华老年多器官疾病杂志,2019,18(09):713-716)。
此外,铁是生物体中必需的微量元素,也是许多生物酶的活性中心,对于正常细胞、肿瘤细胞和微生物细胞都是必不可少的,许多具有螯合或金属结合特性的分子可以影响所有涉及金属离子的过程。因此,铁螯合剂的使用会不可避免地导致贫血(例如,缺铁性贫血)和许多代谢性疾病的副作用。因此,开发既不是抗氧化剂也不是铁螯合剂的铁死亡抑制剂是非常必要的,具有重要意义。
发明内容
本发明的目的之一在于提供一种非螯合性非还原性的化合物,或其药学上可接受的盐,或其立体异构体;
本发明的目的之一在于提供包含上述化合物,或其药学上可接受的盐,或其立体异构体和药学上常用的载体的药物制剂;
本发明的另一目的在于提供上述化合物,或其药学上可接受的盐,或其立体异构体,或其药物制剂的制备方法;
本发明的另一目的在于提供上述化合物,或其药学上可接受的盐,或其立体异构体,或其药物制剂用于铁死亡抑制剂的用途;
本发明的另一目的在于提供上述化合物,或其药学上可接受的盐,或其立体异构体,或其药物制剂在治疗和/或预防铁死亡相关疾病中的用途,如神经退行性、组织缺血再灌注损伤、脑卒中、心血管、肾衰竭、肝损伤以及糖尿病并发症等其它铁死亡相关疾病。
为实现以上目的,本发明提供了如下技术方案:
本发明的一些实施方案中,提供了一种如式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体:
其中:
n选自1或2;
R1独立的选自氢原子、卤素、羟基、硝基、氨基、羧基、氰基、取代或非取代的C1-C6的烷氧基、取代或非取代的C1-C6的烷基、取代或非取代的苯环;或者,两个相邻的R1相互连接形成苯环;
环A选自取代或非取代的五元或六元芳基、取代或非取代的五元或六元杂芳基、取代或非取代的五元或六元杂环基、取代或非取代的的含N的二稠环基或三稠环基;所述环A的取代基选自卤素、羟基、硝基、氨基、羧基、氰基、取代或非取代的C1-C6的烷氧基、取代或非取代的C1-C6的烷基、取代或非取代的五元或六元含N杂环基中的一种或多种;
环B选自取代或非取代的五元或六元芳基、取代或非取代的五元或六元杂芳基、取代或非取代的五元或六元杂环基;所述环B的取代基选自卤素、羟基、硝基、氨基、羧基、氰基、取代或非取代的C1-C6的烷氧基、取代或非取代的C1-C6的烷基中的一种或多种;
所述杂环基、杂芳基的杂原子选自N、O、S中的一种或多种;
所述C1-C6的烷氧基的取代基独立的选自卤素、羟基、硝基、氨基、羧基、氰基、C1-C6的烷基和C1-C6的烷氧基中的一种或多种;
所述C1-C6的烷基的取代基独立的选自卤素、羟基、硝基、氨基、羧基、氰基、C1-C6的烷基和C1-C6的烷氧基中的一种或多种;
所述苯环的取代基独立的选自卤素、羟基、硝基、氨基、羧基、氰基、C1-C6的烷基和C1-C6的烷氧基中的一种或多种;
所述五元或六元含N杂环基的取代基独立的选自卤素、羟基、硝基、氨基、羧基、氰基、C1-C6的烷基和C1-C6的烷氧基中的一种或多种。
可选的,所述杂环基、杂芳基含有的杂原子个数为1、2或3个。
本发明中所述杂环基为脂肪族杂环基。
本发明中,所述含N的二稠环基为两个五元或六元杂芳基稠合形成的基团,或者为一个五元或六元杂芳基和一个五元或六元芳基稠合形成的基团。
本发明中,所述含N的三稠环基为三个五元或六元杂芳基稠合形成的基团,或者为五元或六元杂芳基和五元或六元芳基稠合形成的基团,所述杂芳基和芳基的总数为3个。
本发明的一些实施方案中,上述式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体,其中优选地,
环A为苯基、吡咯基、咪唑基、吡唑基、噻唑基、噁唑基、吡啶基、嘧啶基、吡嗪基、哒嗪基或三嗪基;或者为上述基团中的任意两个或三个稠合形成的含N稠环基;所述环A为取代的或非取代的。
环B为苯基、吡咯基、咪唑基、吡唑基、噻唑基、噁唑基、吡啶基、嘧啶基、吡嗪基、哒嗪基、三嗪基、四氢吡啶基、四氢吡喃基、哌啶基或哌嗪基;所述环B为取代的或非取代的。
上述环A、环B的取代基同上,在此不再赘述。
本发明的一些实施方案中,上述式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体,其中优选地,
环A为苯基、吡唑基、吡啶基、吲哚基、苯并咪唑基、苯并噻唑基或吡咯并吡啶基;所述环A为取代的或非取代的。
环B为苯基、吡啶基、嘧啶基、吡唑基、四氢吡啶基或四氢吡喃基;所述环B为取代的或非取代的。
上述环A、环B的取代基同上,在此不再赘述。
本发明的一些实施方案中,上述式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体,其中优选地,
所述环A的取代基选自卤素、羟基、硝基、氨基、羧基、氰基、甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、六氢吡啶基和N-甲基六氢吡啶基中的一种或多种;
所述环B的取代基选自卤素、羟基、硝基、氨基、羧基、氰基、甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、甲氧基、乙氧基、正丙氧基、正丁氧基中的一种或多种。
本发明的一些实施方案中,提供了一种如式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体:
其中:
n选自1或2;
R1独立的选自氢原子、卤素、羟基、硝基、C1-C6的烷氧基、C1-C6的烷基、苯环;或者,两个相邻的R1相互连接形成苯环;
环A选自:
环B选自:

本发明的一些实施方案中,上述式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体,其中优选地,所述R1独立的选自氢原子、卤素、羟基、C1-C6的烷基。
本发明的一些实施方案中,上述式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体,其中优选地,
所述环A选自:
所述环B选自:
本发明的一些实施方案中,上述式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体,其中优选地,
所述环B选自:
本发明的一些实施方案中,上述式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体,其中所述化合物可选自以下化合物:



本发明的一些实施方案中,提供了一种药物制剂,它是以上述任一项所述的化合物、或其盐、或其立体异构为活性成分,加上药学上常用的载体制备而成的药物制剂。
本发明的一些实施方案中,提供的药物制剂为口服制剂、静脉注射制剂。
本发明的一些实施方案中,提供了上述化合物、或其药学上可接受的盐、或其立体异构体,或上述药物制剂在制备铁死亡抑制剂中的用途;所述铁死亡抑制剂是用于抑制细胞铁死亡的靶向药物。
本发明的一种实施方案中,提供了上述化合物、或其药学上可接受的盐、或其立体异构体,或上述药物制剂在治疗和/或预防神经退行性、组织缺血再灌注损伤、脑卒中、心血管、肾衰竭、肝损伤以及糖尿病并发症等疾病中的用途。其中所述神经退行性疾病为帕金森综合征、阿兹海默症;所述脑卒中包括缺血性脑卒中、出血性脑卒中。
定义和一般术语:
以下术语等用于描述本发明。应该理解,如本领域普通技术人员所理解的那样,没有具体定义的术语被赋予与在本发明的上下文中使用该术语一致的含义。
本发明所使用的术语“卤素”是指氟、氯、溴或碘,优选氯。
本发明所使用的术语“C1-C6的烷基”是指碳原子数为1-6个的直链或者支链的烷基,优选甲基、乙基。
本发明所使用的术语“药学上可接受的盐”是指本发明化合物的盐,由本发明发现的具有特定取代基的化合物与药学上可接受的酸或碱制备。
本发明所使用的术语“立体异构体”是指具有相同的化学组成但是原子和基团的空间排列不同的化合物。这些包括对映体、非对映体、几何异构体、阻转异构体或构象异构体。
本发明使用的术语“药学上常用的载体”是指能够递送本发明有效量活性物质、不干扰活性物质的生物活性并且对宿主或者患者无毒副作用的任何制剂载体或介质,代表性的载体包括水、油、蔬菜和矿物质、膏基、洗剂基质、软膏基质等。这些基质包括悬浮剂、增粘剂、透皮促进剂等。
本发明使用的术语“非螯合性”是指不能通过螯合铁,来阻止芬顿反应引起的脂质过氧化。
本发明使用的术语“非还原性”是指不具有抗氧化活性,不能通过还原机制来防止膜脂的损伤,从而抑制细胞死亡。
本发明的化合物还可在组成此类化合物的一个或多个原子处含有非天然比例的原子同位素。例如,化合物可以用放射性同位素进行放射标记,如氘(D)、氚(3H)、碘-125(125I)或碳-14(14C)。本发明化合物的所有同位素变型,不论放射与否,均涵盖在本发明的范围内。
此外,任一上述化学式的化合物的前药和酯也涵盖在本发明的范围内。
本发明人通过创造性的劳动筛选得到了一批非螯合性非还原性的新型铁死亡抑制剂,解决了目前螯合剂以及抗氧化剂可能存在的潜在风险,为临床治疗铁死亡相关疾病提供了一种更安全的选择方式。同时,本发明人还测试了代表性化合物1对包括PI3K在内的401种激酶的抑制活性,结果显示化合物1对这些靶点均无明显抑制作用,表明本发明的化合物是具有良好选择性的非螯合性非还原性的新型铁死亡抑制剂。
附图说明
图1.本发明化合物1和38的还原性(A)和螯合性(B)实验。
图2.本发明化合物1缓解对乙酰氨基酚诱导的急性肝损伤。A.H&E染色结果。B和C.小鼠血清ALT和AST分析。
具体实施方式
实施例1、8-(3,6-二氢-2H-吡喃-4-基)-2-苯基-6-(1-(哌啶-4-基)-1H-吡唑-4-基)咪唑并[1,2-a]吡嗪(化合物1)的合成
1、6,8-二溴-2-苯基咪唑并[1,2-a]吡嗪(中间体I)的合成
中间体I的合成路线如下:
将2-氨基-3,5-二溴吡嗪(1g,3.96mmol,1.00eq)和2-溴代乙酰丙酮(789.68mg,3.96mmol,1.00eq)置于100mL烧瓶中,用1,4-二氧六环(Dioxane,10mL)溶解。在120℃搅拌反应12小时,直到逐渐析出大量黄色固体。过滤混合物,用1,4-二氧六环(5mL x 2)洗涤,真空干燥即得中间体I黄色固体(1256.72mg,3.59mmol,90%)。
2、中间体II的合成
中间体II的合成路线如下:
将中间体I(500mg,1.42mmol,1.00eq)、3,6-二氢-2H-吡喃-4-硼酸吡那醇酯(300mg,1.42mmol,1.00eq)、Pd(dppf)Cl2(104mg,0.14mmol,0.1eq)和K3PO4(591mg,4.28mmol,3.00eq)加入到双颈瓶中,用1,4-二氧六环(10mL)溶解,置换氩气3次,移至80℃反应,TLC监控反应,约4h后反应完毕。将反应冷却至室温,用水和乙酸乙酯(3 x 20mL)萃取。有机层用无水硫酸镁干燥、过滤和浓缩。有机层经柱层析分离得到中间体II (228mg,1.42mmol,45%)。
3、中间体III的合成
中间体III的合成路线如下:
将中间体II(228mg,0.64mmol,1.00eq)、叔丁基4-[4-(4.4,5,5-四甲基-1,3,2-二氧苯并呋喃-2-基)-1H-吡唑-1-基]哌啶-1-羧酸盐(242mg.0.64mmol,1.00eq)、Pd(dppf)Cl2(46.78mg,0.064mmol,0.1eq)和Cs2CO3(264.96mg,1.92mmol,3.00eq)加入到双颈瓶中,用1,4-二氧六环(10mL)溶解,置换氩气3次,移至80℃反应,TLC监控反应,约4h后反应完毕。将反应冷却至室温,用水和乙酸乙酯(3 x 20mL)萃取。有机层用无水硫酸镁干燥、过滤和浓缩。有机层经柱层析分离得到中间体III(209mg,1.42mmol,62%)。
4、化合物1的合成
化合物1的合成路线如下:
209mg中间体III加入5mL二氯甲烷,3mL三氟乙酸,常温下反应半小时后旋干,DCM溶解,以DCM:MeOH=5:1为展开剂,TLC纯化。分离得到目标产物化合物1(154mg,0.36mmol,91%)。
化合物1的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.76(s,1H),8.50(s,1H),8.39(s,1H),8.28(s,1H),8.07(d,J=7.2Hz,2H),8.00(s,1H),7.49(t,J=7.6Hz,2H),7.38(t,J=7.3Hz,1H),4.47(d,J=2.4Hz,2H),4.32(m,1H),3.92(t,J=5.4Hz,2H),3.13(d,J=12.5Hz,2H),2.82(s,2H),2.69(t,J=11.3Hz,2H),2.01(m,3H),1.88(qd,J=12.9,3.9Hz,2H).
HRMS m/z(ESI)calcd for C25H26N6O[M+H]+427.2241found:427.2243.
实施例2、化合物2的合成
采用实施例1相似的合成方法,制备得到化合物2,收率为56%。
化合物2的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.67(s,1H),8.50(s,1H),8.45(s,1H),8.05(d,J=7.3Hz,2H),7.83(s,1H),7.49(t,J=7.6Hz,2H),7.38(t,J=7.3Hz,1H),4.47(d,J=2.3Hz,2H),3.92(t,J=5.4Hz,2H),3.80(s,3H),2.77(s,2H),2.61(s,3H).
HRMS m/z(ESI)calcd for C22H21N5O[M+H]+372.1819found:372.1817.
实施例3、化合物3的合成
采用实施例1相似的合成方法,制备得到化合物3,收率为53%。
化合物3的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ11.84(s,1H),9.23(s,1H),8.67(s,1H),8.51(s,1H),8.35(d,J=5.0Hz,1H),8.08(d,J=7.2Hz,2H),7.72(d,J=5.0Hz,1H),7.63(d,J=3.4Hz,1H),7.52(t,J=7.6Hz,2H),7.41(t,J=7.3Hz,1H),7.12(d,J=3.3Hz,1H),4.50(d,J=2.3Hz,2H),3.96(t,J=5.4Hz,2H),2.89(s,2H).
HRMS m/z(ESI)calcd for C24H19N5O[M+H]+394.1662found:394.1663.
实施例4、化合物4的合成
采用实施例1相似的合成方法,制备得到化合物4,收率为51%。
化合物4的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.45(s,1H),9.22(s,1H),8.92(d,J=1.4Hz,1H),8.59(s,1H),8.47(s,1H),8.28(dd,J=8.6,1.6Hz,1H),8.22(d,J=8.6Hz,1H),8.10(d,J=7.2Hz,2H),7.51(t,J=7.6Hz,2H),7.40(t,J=7.3Hz,1H),4.50(d,J=2.5Hz,2H),3.96(t,J=5.4Hz,2H),2.92(s,2H).
HRMS m/z(ESI)calcd for C24H18N4OS[M+H]+411.1274found:411.1275.
实施例5、化合物5的合成
采用实施例1相似的合成方法,制备得到化合物5,收率为57%。
化合物5的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.75(s,1H),8.50(s,1H),8.39(s,1H),8.22(s,1H),8.07(d,J=7.2Hz,2H),7.97(s,1H),7.50(t,J=7.6Hz,2H),7.39(t,J=7.3Hz,1H),4.47(d,J=2.5Hz,2H),3.93(d,J=5.5Hz,2H),3.91(s,3H),2.82(s,2H).
HRMS m/z(ESI)calcd for C21H19N5O[M+H]+358.1662found:358.1664.
实施例6、化合物6的合成
采用实施例1相似的合成方法,制备得到化合物6,收率为42%。
化合物6的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ13.05(s,1H),8.78(s,1H),8.49(s,1H),8.39(s,1H),8.26(s,1H),8.07(d,J=7.5Hz,2H),7.49(t,J=7.7Hz,2H),7.38(t,J=7.4Hz,1H),4.47(d,J=2.1Hz,2H),3.92(t,J=5.3Hz,2H),2.83(s,2H).
HRMS m/z(ESI)calcd for C20H17N5O[M+H]+344.1506found:344.1507.
实施例7、化合物7的合成
采用实施例1相似的合成方法,制备得到化合物7,收率为61%。
化合物7的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.93(s,1H),8.62(s,1H),8.38(s,1H),8.30(d,J=1.9Hz,1H),8.06(dd,J=8.4,1.9Hz,1H),7.95(d,J=8.8Hz,2H),7.75(d,J=8.4Hz,1H),7.06(d,J=8.9Hz,2H),4.48(s,2H),3.93(t,J=5.3Hz,2H),3.23(m,4H),2.83(s,2H),2.47(d,J=4.3Hz,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C28H27Cl2N5O[M+H]+520.1665found:520.1667.
实施例8、化合物8的合成
采用实施例1相似的合成方法,制备得到化合物8,收率为55%。
化合物8的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3)δ8.47(s,1H),8.26(s,1H),8.08(d,J=8.3Hz,2H),7.96(s,1H),7.91(d,J=8.8Hz,2H),7.68(dd,J=16.9,7.8Hz,4H),7.47(t,J=7.6Hz,2H),7.37(t,J=7.3Hz,1H),7.03(d,J=8.8Hz,2H),4.59(d,J=2.5Hz,2H),4.05(t,J=5.4Hz,2H),3.31(m,4H),3.00(s,2H),2.61(m,4H),2.38(s,3H).
HRMS m/z(ESI)calcd for C24H33N5O[M+H]+428.2758found:428.2759.
实施例9、化合物9的合成
采用实施例1相似的合成方法,制备得到化合物9,收率为59%。
化合物9的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.77(s,1H),8.63(s,1H),8.34(s,1H),8.31(m,2H),8.07(m,1H),8.01(s,1H),7.75(d,J=8.4Hz,1H),4.47(d,J=2.2Hz,2H),4.28(m,1H),3.92(t,J=5.3Hz,2H),3.08(d,J=12.2Hz,2H),2.82(s,2H),2.62(t,J=11.4Hz,2H),2.00(m,3H),1.84(ddd,J=16.9,13.1,5.1Hz,2H).
HRMS m/z(ESI)calcd for C25H24Cl2N6O[M+H]+495.1461found:495.1462.
实施例10、化合物10的合成
采用实施例1相似的合成方法,制备得到化合物10,收率为67%。
化合物10的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.95(s,1H),8.82(m,1H),8.74(s,1H),8.52(d,J=7.8Hz,1H),8.39(s,1H),8.23(dd,J=7.9,1.8Hz,1H),7.96(d,J=8.8Hz,2H),7.80(t,J=8.0Hz,1H),7.07(d,J=8.9Hz,2H),4.50(s,2H),3.94(t,J=5.2Hz,2H),3.23(m,4H),2.85(s,2H),2.47(d,J=5.2Hz,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C28H28N6O3[M+H]+497.2296found:497.2297.
实施例11、化合物11的合成
采用实施例1相似的合成方法,制备得到化合物11,收率为61%。
化合物11的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.74(s,1H),8.49(s,1H),8.31(s,1H),8.22(s,1H),8.06(d,J=7.2Hz,2H),7.97(s,1H),7.50(t,J=7.6Hz,2H),7.39(m,1H),3.92(s,3H),2.90(s,2H),2.77(s,2H),2.43(s,3H).
HRMS m/z(ESI)calcd for C22H22N6[M+H]+371.1979found:371.1978.
实施例12、化合物12的合成
采用实施例1相似的合成方法,制备得到化合物12,收率为61%。
化合物12的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3)δ8.38(s,1H),8.21(s,1H),7.92(dd,J=15.8,8.8Hz,4H),7.83(s,1H),7.01(dd,J=10.2,9.0Hz,4H),3.87(s,3H),3.40(d,J=3.1Hz,2H),3.30(m,4H),3.04(s,2H),2.77(t,J=5.7Hz,2H),2.61(m,4H),2.48(s,3H),2.37(s,3H).
HRMS m/z(ESI)calcd for C30H34N6O[M+H]+495.2867found:495.2868.
实施例13、化合物13的合成
采用实施例1相似的合成方法,制备得到化合物13,收率为61%。
化合物13的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.90(s,1H),8.90(s,1H),8.51(s,1H),8.51(s,1H),8.32(s,2H),8.32(s,1H),8.08(d,J=8.5Hz,3H),8.08(d,J=8.5Hz,2H),7.94(d,J=8.8Hz,3H),7.94(d,J=8.8Hz,2H),7.55(d,J=8.5Hz,3H),7.55(d,J=8.5Hz,2H),7.06(d,J=8.9Hz,3H),7.06(d,J=8.9Hz,2H),3.27(s,2H),3.23(m,4H),2.87(s,2H),2.66(t,J=5.6Hz,2H),2.47(m,4H),2.35(s,3H),2.23(s,3H).
HRMS m/z(ESI)calcd for C29H31ClN6[M+H]+499.2371found:499.2371.
实施例14、化合物14的合成
采用实施例1相似的合成方法,制备得到化合物14,收率为67%。
化合物14的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.91(s,1H),8.62(s,1H),8.30(d,J=1.9Hz,2H),8.06(dd,J=8.4,2.0Hz,1H),7.95(d,J=8.9Hz,2H),7.76(d,J=8.4Hz,1H),7.07(d,J=8.9Hz,2H),3.29(d,J=2.8Hz,2H),3.23(m,4H),2.88(s,2H),2.67(t,J=5.5Hz,2H),2.47(d,J=5.4Hz,4H),2.36(s,3H),2.24(s,3H).
HRMS m/z(ESI)calcd for C29H30Cl2N6[M+H]+533.1982found:533.1983.
实施例15、化合物15的合成
采用实施例1相似的合成方法,制备得到化合物15,收率为50%。
化合物15的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.88(s,1H),8.47(s,1H),8.38(s,1H),8.05(d,J=7.4Hz,2H),7.93(d,J=8.8Hz,2H),7.49(t,J=7.6Hz,2H),7.38(t,J=7.3Hz,1H),7.05(d,J=8.9Hz,2H),3.63(d,J=1.5Hz,2H),3.22(m,4H),3.02(t,J=5.4Hz,2H),2.75(s,2H),2.47(m,4H),2.23(s,3H).
HRMS m/z(ESI)calcd for C28H30N6[M+H]+451.2605found:451.2607.
实施例16、化合物16的合成
采用实施例1相似的合成方法,制备得到化合物16,收率为55%。
化合物16的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3)δ8.29(s,1H),8.23(s,1H),8.11(s,1H),7.91(d,J=4.1Hz,2H),7.88(s,1H),7.82(d,J=7.8Hz,1H),7.52(d,J=8.4Hz,1H),7.02(d,J=8.9Hz,2H),4.36(d,J=2.5Hz,2H),3.73(t,J=5.4Hz,2H),3.31(m,4H),3.00(s,2H),2.61(m,4H).
HRMS m/z(ESI)calcd for C28H28Cl2N6[M+H]+519.1825found:519.1825.
实施例17、化合物17的合成
采用实施例1相似的合成方法,制备得到化合物17,收率为55%。
化合物17的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.99(s,1H),8.87(s,1H),8.57(s,1H),8.52(s,1H),8.16(d,J=7.3Hz,2H),8.00(d,J=8.8Hz,2H),7.52(t,J=7.6Hz,2H),7.40(t,J=7.3Hz,1H),7.07(d,J=8.9Hz,2H),4.04(s,3H),3.24(m,4H),2.47(d,J=4.9Hz,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C27H27N7[M+H]+450.2401found:450.2403.
实施例18、化合物18的合成
采用实施例1相似的合成方法,制备得到化合物18,收率为59%。
化合物18的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.98(s,1H),8.85(s,1H),8.50(s,1H),8.10(d,J=7.5Hz,2H),7.94(d,J=8.7Hz,2H),7.51(t,J=7.6Hz,2H),7.39(t,J=7.3Hz,1H),7.09(d,J=8.8Hz,2H),3.89(s,3H),3.24(m,4H),2.87(s,3H),2.47(d,J=4.8Hz,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C28H29N7[M+H]+464.2557found:464.2559.
实施例19、化合物19的合成
采用实施例1相似的合成方法,制备得到化合物19,收率为50%。
化合物19的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.17(s,1H),8.92(m,2H),8.87(m,2H),8.65(s,1H),8.15(d,J=7.2Hz,2H),8.05(d,J=8.8Hz,2H),7.54(t,J=7.6Hz,2H),7.43(t,J=7.4Hz,1H),7.11(d,J=8.9Hz,2H),3.26(m,4H),2.47(s,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C28H26N6[M+H]+447.2292found:447.2292.
实施例20、化合物20的合成
采用实施例1相似的合成方法,制备得到化合物20,收率为52%。
化合物20的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.16(s,1H),8.91(d,J=5.0Hz,3H),8.86(d,J=4.9Hz,2H),8.65(s,1H),8.27(d,J=8.9Hz,1H),8.15(d,J=7.9Hz,2H),7.54(t,J=7.6Hz,2H),7.43(t,J=7.3Hz,1H),6.96(d,J=9.0Hz,1H),3.52(m,4H),2.81(m,4H),1.25(m,1H).
HRMS m/z(ESI)calcd for C26H23N7[M+H]+434.2088found:434.2088.
实施例21、化合物21的合成
采用实施例1相似的合成方法,制备得到化合物21,收率为51%。
化合物21的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.01(s,1H),8.95(d,J=6.0Hz,2H),8.86(d,J=5.9Hz,2H),8.66(s,1H),8.47(s,1H),8.16(d,J=7.4Hz,2H),8.11(s,1H),7.54(t,J=7.6Hz,2H),7.43(t,J=7.4Hz,1H),4.29(m,1H),3.08(d,J=12.6Hz,2H),2.62(t,J=11.6Hz,2H),2.02(dd,J=11.3,2.5Hz,3H),1.86(ddd,J=23.9,11.9,3.7Hz,2H).
HRMS m/z(ESI)calcd for C25H23N7[M+H]+422.2088found:422.2089.
实施例22、化合物22的合成
采用实施例1相似的合成方法,制备得到化合物22,收率为59%。
化合物22的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.92(d,J=2.1Hz,1H),9.15(dd,J=8.8,2.4Hz,1H),9.02(s,1H),8.59(s,1H),8.12(d,J=7.2Hz,2H),8.02(d,J=8.8Hz,2H),7.53(t,J=7.6Hz,2H),7.41(t,J=7.3Hz,1H),7.09(d,J=8.6Hz,3H),4.00(s,3H),3.28–3.19(m,4H),2.48(d,J=5.4Hz,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C29H28N6O[M+H]+477.2397found:477.2398.
实施例23、化合物23的合成
采用实施例1相似的合成方法,制备得到化合物23,收率为58%。
化合物23的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.17(s,1H),8.85(d,J=2.0Hz,1H),8.70(d,J=4.8Hz,1H),8.65(s,1H),8.21–8.15(m,1H),8.03(d,J=7.3Hz,2H),7.95(d,J=8.8Hz,2H),7.49(t,J=7.5Hz,2H),7.39(t,J=7.3Hz,1H),7.08(d,J=8.9Hz,2H),3.27–3.21(m,4H),2.49–2.44(m,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C28H25FN6[M+H]+465.2197found:465.2199.
实施例24、化合物24的合成
采用实施例1相似的合成方法,制备得到化合物24,收率为54%。
化合物24的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.20(s,1H),8.98–8.94(m,2H),8.92–8.88(m,2H),8.78(s,1H),8.71(s,1H),8.29(d,J=8.5Hz,1H),8.12–8.04(m,4H),7.98(d,J=7.1Hz,1H),7.62–7.53(m,2H),7.12(d,J=8.9Hz,2H),3.29–3.23(m,4H),2.50–2.46(m,4H),2.25(s,3H).
HRMS m/z(ESI)calcd for C32H28N6[M+H]+497.2448found:497.2447.
实施例25、化合物25的合成
采用实施例1相似的合成方法,制备得到化合物25,收率为56%。
化合物25的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.18(s,1H),8.88(s,3H),8.78(s,1H),8.40(d,J=1.9Hz,1H),8.15(dd,J=8.3,2.0Hz,2H),8.06(d,J=8.9Hz,2H),7.80(d,J=8.4Hz,1H),7.11(d,J=8.9Hz,2H),3.29–3.23(m,4H),2.47(s,4H),2.25(s,3H).
HRMS m/z(ESI)calcd for C28H24Cl2N6[M+H]+515.1512found:515.1511.
实施例26、化合物26的合成
采用实施例1相似的合成方法,制备得到化合物26,收率为52%。
化合物26的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.12(s,1H),8.76–8.68(m,3H),8.62(s,1H),8.13(d,J=7.3Hz,2H),8.03(d,J=8.8Hz,2H),7.54(t,J=7.6Hz,2H),7.43(t,J=7.3Hz,1H),7.10(d,J=8.9Hz,2H),3.28–3.22(m,4H),2.67(s,3H),2.48(d,J=4.9Hz,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C29H28N6[M+H]+461.2448found:461.2447.
实施例27、化合物27的合成
采用实施例1相似的合成方法,制备得到化合物27,收率为52%。
化合物27的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3)δ8.92(dd,J=4.6,1.5Hz,2H),8.86(dd,J=4.7,1.4Hz,2H),8.41(s,1H),8.03(d,J=4.5Hz,2H),8.01–7.94(m,3H),7.47(d,J=8.5Hz,2H),7.06(d,J=8.8Hz,2H),3.39–3.29(m,4H),2.67–2.57(m,4H),2.38(s,3H).
HRMS m/z(ESI)calcd for C28H25ClN6[M+H]+461.2448found:461.2447.
实施例28、化合物28的合成
采用实施例1相似的合成方法,制备得到化合物28,收率为57%。
化合物28的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3)δ8.96(dd,J=4.6,1.5Hz,2H),8.87(dd,J=4.7,1.5Hz,2H),8.44(s,1H),8.15(d,J=8.3Hz,2H),8.09(s,1H),7.98(d,J=8.8Hz,2H),7.74(d,J=8.3Hz,2H),7.68(d,J=7.3Hz,2H),7.48(t,J=7.6Hz,2H),7.39(t,J=7.3Hz,1H),7.07(d,J=8.8Hz,2H),3.38–3.30(m,4H),2.67–2.58(m,4H),2.39(s,3H).
HRMS m/z(ESI)calcd for C24H30N6[M+H]+523.2605found:523.2606.
实施例29、化合物29的合成
采用实施例1相似的合成方法,制备得到化合物29,收率为51%。
化合物29的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.94(d,J=2.2Hz,1H),9.21(dd,J=8.8,2.3Hz,1H),8.87(s,1H),8.60(s,1H),8.46(s,1H),8.13(d,J=7.3Hz,2H),8.08(s,1H),7.53(t,J=7.6Hz,2H),7.42(t,J=7.4Hz,1H),7.07(d,J=8.8Hz,1H),4.33–4.24(m,1H),3.09(d,J=12.5Hz,2H),2.64(t,J=11.4Hz,2H),2.01(dd,J=17.5,9.7Hz,3H),1.87(ddd,J=23.8,12.1,3.7Hz,2H).
HRMS m/z(ESI)calcd for C26H25N7O[M+H]+452.2193found:452.2194.
实施例30、化合物30的合成
采用实施例1相似的合成方法,制备得到化合物30,收率为50%。
化合物30的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ8.99(s,1H),8.78(d,J=5.1Hz,1H),8.72(m,2H),8.65(s,1H),8.46(s,1H),8.15(d,J=7.3Hz,2H),8.11(s,1H),7.54(t,J=7.6Hz,2H),7.43(t,J=7.3Hz,1H),4.30(ddd,J=11.6,10.0,4.3Hz,1H),3.08(d,J=12.1Hz,2H),2.68(s,3H),2.63(t,J=11.7Hz,2H),2.02(d,J=9.3Hz,3H),1.87(qd,J=11.8,3.6Hz,2H).
HRMS m/z(ESI)calcd for C26H25N7[M+H]+436.2244found:436.2245.
实施例31、化合物31的合成
采用实施例1相似的合成方法,制备得到化合物31,收率为57%。
化合物31的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.84(d,J=1.9Hz,1H),9.07(dd,J=8.8,2.2Hz,1H),8.95(s,1H),8.64(s,1H),8.30(s,1H),8.07(d,J=8.6Hz,1H),7.99(d,J=8.7Hz,2H),7.75(d,J=8.4Hz,1H),7.06(d,J=8.8Hz,3H),3.99(s,3H),3.24(m,4H),2.48(d,J=5.0Hz,4H),2.25(s,3H).
HRMS m/z(ESI)calcd for C29H26Cl2N6O[M+H]+545.1618found:545.1618.
实施例32、化合物32的合成
采用实施例1相似的合成方法,制备得到化合物32,收率为54%。
化合物32的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3)δ8.54(s,2H),8.40(s,1H),8.07(dd,J=10.3,3.2Hz,3H),7.97(d,J=8.8Hz,2H),7.51(t,J=7.5Hz,2H),7.41(t,J=7.4Hz,1H),7.07(d,J=8.9Hz,2H),3.33(m,4H),2.72(s,6H),2.62(m,4H),2.38(s,3H).
HRMS m/z(ESI)calcd for C30H30N6[M+H]+475.2605found:475.2606.
实施例33、化合物33的合成
采用实施例1相似的合成方法,制备得到化合物33,收率为50%。
化合物33的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.10(s,1H),8.61(s,1H),8.16(dd,J=6.0,4.7Hz,3H),8.10(s,1H),8.02(d,J=8.8Hz,2H),7.95(dd,J=5.4,1.3Hz,1H),7.53(t,J=7.6Hz,2H),7.42(t,J=7.3Hz,1H),7.09(d,J=8.9Hz,2H),6.20(s,2H),3.25(m,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C28H27N7[M+H]+462.2401found:462.2402.
实施例34、化合物34的合成
采用实施例1相似的合成方法,制备得到化合物34,收率为59%。
化合物34的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.10(s,1H),8.70(dd,J=10.3,4.2Hz,3H),8.62(s,1H),8.34(d,J=1.8Hz,1H),8.11(dd,J=8.4,1.9Hz,1H),8.02(d,J=8.7Hz,2H),7.78(d,J=8.4Hz,1H),7.09(d,J=8.9Hz,2H),3.25(m,4H),2.66(s,3H),2.48(d,J=5.0Hz,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C29H26Cl2N6[M+H]+529.1669found:529.1668.
实施例35、化合物35的合成
采用实施例1相似的合成方法,制备得到化合物35,收率为59%。
化合物35的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ10.23(d,J=1.3Hz,1H),9.54(dd,J=8.2,2.1Hz,1H),9.18(s,1H),8.66(s,1H),8.31(d,J=8.6Hz,1H),8.14(d,J=7.3Hz,2H),8.04(d,J=8.8Hz,2H),7.54(t,J=7.4Hz,2H),7.43(t,J=7.5Hz,1H),7.10(d,J=8.9Hz,2H),3.26(m,4H),2.47(s,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C29H25N7[M+H]+472.2244found:472.2246.
实施例36、化合物36的合成
采用实施例1相似的合成方法,制备得到化合物36,收率为59%。
化合物36的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.90(d,J=2.3Hz,1H),9.15(dd,J=8.8,2.4Hz,1H),9.02(s,1H),8.59(s,1H),8.12(d,J=7.4Hz,2H),8.02(d,J=8.8Hz,2H),7.53(t,J=7.6Hz,2H),7.41(t,J=7.4Hz,1H),7.07(dd,J=11.6,9.0Hz,3H),4.46(q,J=7.0Hz,2H),3.25(m,4H),2.47(s,4H),2.24(s,3H),1.40(t,J=7.0Hz,3H).
HRMS m/z(ESI)calcd for C30H30N6O[M+H]+491.2554found:491.2555.
实施例37、化合物37的合成
采用实施例1相似的合成方法,制备得到化合物37,收率为63%。
化合物37的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ10.05(s,2H),9.07(s,1H),8.62(s,1H),8.12(d,J=7.3Hz,2H),8.03(d,J=8.8Hz,2H),7.53(t,J=7.6Hz,2H),7.42(t,J=7.3Hz,1H),7.08(d,J=9.0Hz,2H),4.07(s,3H),3.25(m,4H),2.47(s,4H),2.24(s,3H).
HRMS m/z(ESI)calcd for C28H27N7O[M+H]+478.2350found:478.2351.
实施例38、化合物38的合成
采用实施例1相似的合成方法,制备得到化合物38,收率为57%。
化合物38的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3-d)δ8.40(d,J=0.9Hz,1H),8.14(s,1H),7.91(d,J=7.8Hz,2H),7.86(d,J=7.9Hz,2H),7.75(s,1H),6.98(t,J=7.0Hz,4H),4.55(s,2H),4.02(t,J=5.1Hz,2H),3.85(d,J=0.8Hz,3H),3.28(d,J=4.3Hz,4H),2.96(s,2H),2.60(m,4H),2.37(s,3H).
HRMS m/z(ESI)calcd for C29H31N5O2[M+H]+482.2551found:482.2551.
实施例39、化合物39的合成
采用实施例1相似的合成方法,制备得到化合物39,收率为52%。
化合物39的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO-d6)δ9.71(s,1H),8.84(s,1H),8.39(s,1H),8.29(s,1H),7.88(dd,J=11.4,8.7Hz,4H),7.02(d,J=8.7Hz,2H),6.88(d,J=8.4Hz,2H),4.44(s,2H),3.91(t,J=5.1Hz,2H),3.20(s,4H),2.81(s,2H),2.47(s,4H),2.23(s,3H).HRMS m/z(ESI)calcd for C28H29N5O2[M+H]+468.2394found:468.2398.
实施例40、化合物40的合成
采用实施例1相似的合成方法,制备得到化合物40,收率为48%。
化合物40的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3-d)δ8.43(s,1H),8.23(s,1H),7.89(m,5H),7.28(m,1H),7.25(m,1H),7.02(d,J=8.4Hz,2H),4.58(d,J=2.1Hz,2H),4.04(t,J=5.3Hz,2H),3.30(m,4H),2.98(s,2H),2.61(m,4H),2.41(s,3H),2.37(s,3H).HRMS m/z(ESI)calcd for C29H31N5O[M+H]+466.2601found:466.2602.
实施例41、化合物41的合成
采用实施例1相似的合成方法,制备得到化合物41,收率为43%。
化合物41的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3-d)δ8.43(s,1H),8.23(s,1H),7.90(t,J=4.4Hz,3H),7.57(dd,J=10.2,5.0Hz,2H),7.37(t,J=7.9Hz,1H),7.02(d,J=8.9Hz,2H),6.92(dd,J=8.2,1.8Hz,1H),4.57(d,J=2.6Hz,2H),4.04(t,J=5.4Hz,2H),3.91(s,3H),3.31(m,4H),2.98(d,J=1.4Hz,2H),2.61(m,4H),2.38(s,3H).HRMS m/z(ESI)calcd for C33H31N5O[M+H]+482.2551found:482.2552.
实施例42、化合物42的合成
采用实施例1相似的合成方法,制备得到化合物42,收率为59%。
化合物42的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3)δ9.06(d,J=8.0Hz,2H),8.28(s,1H),8.07(d,J=7.9Hz,2H),7.97(m,3H),7.48(t,J=7.2Hz,2H),7.37(t,J=6.9Hz,1H),7.10(d,J=8.0Hz,2H),7.04(d,J=8.0Hz,2H),3.92(d,J=0.8Hz,3H),3.32(s,4H),2.63(s,4H),2.39(s,3H).HRMS m/z(ESI)calcd for C30H29N5O[M+H]+476.2445found:476.2449.
实施例43、化合物43的合成
采用实施例1相似的合成方法,制备得到化合物43,收率为47%。
化合物43的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ10.00(s,1H),9.14(d,J=8.1Hz,1H),9.07(s,1H),8.62(s,1H),8.12(d,J=7.6Hz,2H),8.03(d,J=8.5Hz,2H),7.53(m,3H),7.42(t,J=7.2Hz,1H),7.11(d,J=8.7Hz,2H),3.26(s,4H),2.62(s,3H),2.49(m,4H),2.26(s,3H).HRMS m/z(ESI)calcd for C29H28N6[M+H]+461.2448found:461.2451.
实施例44、化合物44的合成
采用实施例1相似的合成方法,制备得到化合物44,收率为47%。
化合物44的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.92(s,1H),9.13(d,J=8.2Hz,1H),9.01(s,1H),8.57(s,1H),8.02(d,J=8.2Hz,2H),7.91(m,2H),7.41(t,J=7.5Hz,1H),7.23(d,J=7.6Hz,1H),7.09(d,J=8.3Hz,3H),4.01(s,3H),3.26(s,4H),2.51(s,4H),2.44(s,3H),2.26(s,3H).
HRMS m/z(ESI)calcd for C30H30N6O[M+H]+491.2554found:491.2556.
实施例45、化合物45的合成
采用实施例1相似的合成方法,制备得到化合物45,收率为62%。
化合物45的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.89(s,1H),9.12(m,1H),9.02(s,1H),8.68(s,1H),8.16(s,1H),8.09(d,J=7.6Hz,1H),8.03(d,J=8.4Hz,2H),7.56(t,J=7.8Hz,1H),7.47(d,J=8.0Hz,1H),7.09(dd,J=8.7,4.0Hz,3H),4.01(s,3H),3.26(s,4H),2.47(m,4H),2.26(s,3H).
HRMS m/z(ESI)calcd for C29H27ClN6O[M+H]+511.2008found:511.2006.
实施例46、化合物46的合成
采用实施例1相似的合成方法,制备得到化合物46,收率为43%。
化合物46的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.95(s,1H),9.62(s,1H),9.11(m,1H),9.01(s,1H),8.52(s,1H),8.02(d,J=8.7Hz,2H),7.58(s,1H),7.50(d,J=8.0Hz,1H),7.31(t,J=7.7Hz,1H),7.09(d,J=8.9Hz,3H),6.80(d,J=8.0Hz,1H),4.00(s,3H),3.25(s,4H),2.47(m,4H),2.25(s,3H).HRMS m/z(ESI)calcd for C29H28N6O2[M+H]+493.2347found:493.2348.
实施例47、化合物47的合成
采用实施例1相似的合成方法,制备得到化合物47,收率为43%。
化合物47的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO-d6)δ10.05(s,2H),9.07(s,1H),8.62(s,1H),8.12(d,J=7.3Hz,2H),8.03(d,J=8.8Hz,2H),7.53(t,J=7.6Hz,2H),7.42(t,J=7.3Hz,1H),7.08(d,J=9.0Hz,2H),4.07(s,3H),3.25(m,4H),2.47(s,4H),2.24(s,3H).HRMS m/z(ESI)calcd for C28H27N7O[M+H]+478.2350found:478.2351.
实施例48、化合物48的合成
采用实施例1相似的合成方法,制备得到化合物48,收率为43%。
化合物48的1H NMR和HRMS数据如下:
1H NMR(400MHz,CDCl3-d)δ9.02(m,2H),8.31(s,1H),8.07(m,2H),7.97(t,J=4.4Hz,3H),7.59(m,2H),7.53(m,1H),7.48(t,J=7.5Hz,2H),7.38(t,J=7.4Hz,1H),7.04(d,J=8.9Hz,2H),3.31(m,4H),2.61(m,4H),2.38(s,3H).HRMS m/z(ESI)calcd for C29H27N5[M+H]+446.2339found:446.2339.
对比例1、对比例1的合成
采用实施例1相似的合成方法,制备得到对比例1,收率为52%。
对比例1的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.05(s,1H),8.83(m,4H),8.44(s,1H),8.20(s,1H),8.07(s,1H),7.92(s,1H),4.34(t,J=10.2Hz,1H),3.14(d,J=12.1Hz,2H),2.71(t,J=11.7Hz,2H),2.06(d,J=11.1Hz,2H),1.92(dd,J=23.6,13.1Hz,3H).HRMS m/z(ESI)calcd for C19H19N7[M+H]+346.1775found:346.1772.
对比例2、对比例2的合成
采用实施例1相似的合成方法,制备得到化合物对比例2,收率为32%。
对比例2的1H NMR和HRMS数据如下:
1H NMR(400MHz,DMSO)δ9.24(s,1H),9.02(s,1H),8.93(d,J=2.3Hz,1H),8.29(dd,J=8.9,2.4Hz,1H),8.22(s,1H),7.94(s,1H),7.75(d,J=2.9Hz,1H),7.07(dd,J=8.9,3.0Hz,1H),7.01(d,J=9.0Hz,1H),6.71(d,J=8.9Hz,1H),3.74(m,4H),3.56(m,4H).
HRMS m/z(ESI)calcd for C20H18N6O[M+H]+359.1615 found:359.1617.
以下通过具体的试验例证明本发明的有益效果。
试验例1、本发明化合物对Ferroptosis的抑制率的研究
Ferroptosis筛选模型主要是采用MTT细胞活力检测法。首先在皿中培养纤维肉瘤细胞株HT1080,将处于对数生长期的细胞按特定数量接种于96孔板中(3000个/孔),每孔100μL,然后放入37℃、5%CO2环境的孵箱中培养,让细胞贴壁。24h后,加入100μL使用指定的培养基配制好的一定浓度的化合物和Ferroptosis诱导剂Erastin(终浓度10μM),每个化合物设置3个复孔,保证结果的准确性,并且设置阴性对照组,阳性对照组(Fer-1 15μM),空白对照组和溶剂对照组。加药之后放入孵箱,培养48h。并在MTT实验当天预先配好MTT测试液(溶于生理盐水的5mg/mL MTT溶液,4℃避光保存),每孔加入20μL MTT溶液,放入孵箱继续培养2-4h,然后,每孔加入50μL 20%SDS溶液(溶于MiliiQ水,加入1%的浓盐酸),放入孵箱中过夜,第二天用酶标仪检测570nm处吸光度值,以计算 药物对Ferroptosis的抑制率。一般对照组的吸光度值应在0.8-1.2之间为正常值。取得吸光度值数据之后,计算3个复孔的平均值,采用如下公式计算抑制率:
抑制率%(inhibitionrate,IR)=[1-(A实验组-A空白)/(A溶剂-A空白)]*100%
使用GraphPad Prism 5软件拟合抑制率变化曲线并算出EC50
对上述的47个化合物进行EC50的测试(EC50的测试取得是三次测试的平均值,Fer-1为阳性对照组),结果如下表1所示:
表1本发明化合物的EC50
由表1可知:本发明化合物1-48的EC50值在0.01-6.3μM之间,均小于10μM,证明本发明制备的化合物1-48对Ferroptosis具有良好的抑制作用,可用于制备铁死亡抑制剂,并且化合物22和化合物46的EC50显著优于阳性对照Fer-1,表现出优异的铁死亡抑制效果。
对比例1的EC50值大于10μM,与本发明化合物21相比,区别只在于有无苯环取代,而没有苯环取代导致了铁死亡抑制活性的完全丧失,因此,本发明母核结构中苯环取代对于铁死亡抑制活性是必不可少的。
另,测试化合物1在卵巢癌细胞株ES-2中的EC50,试验方法及操作步骤与前述一致。结果如下表2所示:
表2本发明化合物在ES-2中的EC50
由表2可知,化合物1对Ferroptosis具有良好的抑制作用,可用于制备铁死亡抑制剂。对比例2没有苯环取代,丧失了铁死亡抑制活性,本发明母核结构中苯环取代对于铁死亡抑制活性是必不可少的。
试验例2、本发明化合物1(10μM)对401种激酶的激酶抑制活性
在10μM ATP下针对化合物1使用不同重组激酶靶标进行激酶谱分析。所测试的激酶包括PI3K、FYN、MAPK、JAK、CDK等。%Ctrl数值越低表示测试化合物与激酶的结合能力越强,计算公式如下:
阳性参照为%Ctrl值为0的参照物,阴性参照为DMSO(%Ctrl值为100)。结果在表3中示出。
表3本发明化合物1对所测试的激酶活性的影响





表3结果显示,本发明化合物1对PI3K在内的401中激酶的“%Ctrl”值均大于50,没有明显抑制活性,表明本发明的化合物作为铁死亡抑制剂具备良好的选择性。
试验例3、本发明化合物1和化合物38的非螯合性非还原性测定
采用2,2-二苯基-1-苦基肼(DPPH)法进行还原性的研究。化合物用甲醇配制,移液管移入96孔板,接着加入DPPH溶液。混合物在室温下避光孵育10分钟。测定517nm处的吸光度。进行3次重复独立实验,结果如图A所示。
采用铁与啡啰嗪形成有色复合物的性质进行化合物螯合性的研究。吸取测试化合物溶液、FeSO4溶液和啡啰嗪溶液加入到100μL蒸馏水中,在室温下孵育5min。最后,使用CLARIOstar多功能酶标仪(BMG Labtech,德国)检测样品A562。同时,选择去铁胺(Deferoxamine,DFO)和EDTA.2H2O作为阳性对照,DMSO为空白对照。以空白对照孔的A562为标准值(100%)来计算样品孔A562的相对量,结果如图B所示。
由图1可知:图A显示本发明化合物1和化合物38为非还原性,而阳性对照Fer-1为还原性;图B显示本发明化合物1和化合物38不具备铁螯合性能,而去铁胺和EDTA.2H2O具备铁螯合性能。
综上,本发明制备的铁死亡抑制剂为非还原性非螯合性,可用于制备新型非还原性非螯合性铁死亡抑制剂。
试验例4、本发明化合物1在肝损伤动物模型中的研究。
4周龄雄性C57BL/6J小鼠适应性养殖1周。实验前1天,对小鼠进行禁食12h。对小鼠进行腹腔注射化合物溶液1h后,对实验小鼠注射APAP(对乙酰氨基酚)溶液(500mg/kg)或生理盐水。6h后,眼眶取血将小鼠清样本进行ALT(谷丙转氨酶)和AST(谷草转氨酶)检测。小鼠安乐死后解剖,取出肝组织用生理盐水清洗立即用中性福尔马林固定24h以上,进行HE染色。空白对照组是指不加药不加APAP的空白对照,溶剂对照组是指向小鼠腹腔内注射500mg/kg的APAP的溶剂组,结果如图2所示。
由图2可知:化合物1可显著抑制APAP组C57BL/J6小鼠肝组织中的细胞死亡和炎症(图A),它还显著降低了血清中天冬氨酸转氨酶(AST)(图B)和丙氨酸转氨酶(ALT)的水平(图C)。在肝损伤动物模型中,本发明制备的化合物1与阳性对照Fer-1相比展现了良好的治疗效果。因此,本发明药物可应用于铁死亡相关疾病的治疗。
综上,本发明合成了一种非螯合性非还原性的铁死亡抑制剂,该类化合物对铁死亡有良好的抑制作用,可用于制备铁死亡抑制剂。也可以用于制备治疗与铁死亡相关的神经退行性、组织缺血再灌注损伤、脑卒中、心血管、肾衰竭、肝损伤以及糖尿病并发症等疾病的药物,具有广阔的市场前景。
以上实施例为对本申请的进一步说明,给出本申请的实施细节,但需要指出的是上面描述的实施例是示例性的,仅用于解释本申请,而不能理解为对本申请的限制。对于本领域技术人员根据现有技术对其进行修改或替代仍属于本申请的保护范围。本申请实施例中使用的试剂均可通过商购获得。

Claims (11)

  1. 一种式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体:
    其中:
    n选自1或2;
    R1独立的选自氢原子、卤素、羟基、硝基、氨基、羧基、氰基、取代或非取代的C1-C6的烷氧基、取代或非取代的C1-C6的烷基、取代或非取代的苯环;或者,两个相邻的R1相互连接形成苯环;
    环A选自取代或非取代的五元或六元芳基、取代或非取代的五元或六元杂芳基、取代或非取代的五元或六元杂环基、取代或非取代的含N的二稠环基或三稠环基;所述环A的取代基选自卤素、羟基、硝基、氨基、羧基、氰基、取代或非取代的C1-C6的烷氧基、取代或非取代的C1-C6的烷基、取代或非取代的五元或六元含N杂环基中的一种或多种;
    环B选自取代或非取代的五元或六元芳基、取代或非取代的五元或六元杂芳基、取代或非取代的五元或六元杂环基;所述环B的取代基选自卤素、羟基、硝基、氨基、羧基、氰基、取代或非取代的C1-C6的烷氧基、取代或非取代的C1-C6的烷基中的一种或多种;
    所述杂环基、杂芳基的杂原子选自N、O、S中的一种或多种;所述C1-C6的烷氧基的取代基独立的选自卤素、羟基、硝基、氨基、羧基、氰基、C1-C6的烷基和C1-C6的烷氧基中的一种或多种;
    所述C1-C6的烷基的取代基独立的选自卤素、羟基、硝基、氨基、羧基、氰基、C1-C6的烷基和C1-C6的烷氧基中的一种或多种;
    所述苯环的取代基独立的选自卤素、羟基、硝基、氨基、羧基、氰基、C1-C6的烷基和C1-C6的烷氧基中的一种或多种;
    所述五元或六元含N杂环基的取代基独立的选自卤素、羟基、硝基、氨基、羧基、氰基、C1-C6的烷基和C1-C6的烷氧基中的一种或多种。
  2. 根据权利要求1所述的化合物,其特征在于,所述环A为苯基、吡咯基、咪唑基、吡唑基、噻唑基、噁唑基、吡啶基、嘧啶基、吡嗪基、哒嗪基或三嗪基;或者所述环A为上述基团中的任意两个或三个稠合形成的含N稠环基;所述环A为取代的或非取代的;
    所述环B选自苯基、吡咯基、咪唑基、吡唑基、噻唑基、噁唑基、吡啶基、嘧啶基、吡嗪基、哒嗪基、三嗪基、四氢吡啶基、四氢吡喃基、哌啶基或哌嗪基;所述环B为取代或非取代的;
    所述杂环基、杂芳基含有的杂原子个数为1、2或3个。
  3. 一种式(I)所示的化合物、或其药学上可接受的盐、或其立体异构体:
    其中:
    n选自1或2;
    R1独立的选自氢原子、卤素、羟基、硝基、C1-C6的烷氧基、C1-C6的烷基、苯环;或者,两个相邻的R1相互连接形成苯环;
    环A选自:
    环B选自:
  4. 根据权利要求3所述的化合物、或其药学上可接受的盐、或其立体异构体,其特征在于,所述R1独立的选自氢原子、卤素、羟基、C1-C6的烷基。
  5. 根据权利要求3或4所述的化合物、或其药学上可接受的盐、或其立体异构体,其特征在于,
    所述环A选自:
    所述环B选自:
  6. 根据权利要求3-5任一项所述的化合物、或其药学上可接受的盐、或其立体异构体,其特征在于,
    所述环B选自:
  7. 根据权利要求3~6任一项所述的化合物、或其药学上可接受的盐、或其立体异构体,其特征在于,所述化合物为如下化合物之一:



  8. 一种药物制剂,其特征在于,它是以权利要求1~7任一项所述的化合物、或其药学上可接受的盐、或其立体异构为活性成分,加上药学上常用的载体制备而成的制剂。
  9. 根据权利要求8所述的药物制剂,其特征在于,所述制剂为口服制剂、静脉注射制剂。
  10. 根据权利要求1~7任一项所述的化合物、或其药学上可接受的盐、或其立体异构体,或权利要求8或9所述的药物制剂在制备铁死亡抑制剂中的用途。
  11. 根据权利要求1~7任一项所述的化合物、或其药学上可接受的盐、或其立体异构体,或权利要求8或9所述的药物制剂在制备治疗和/或预防神经退行性、组织缺血再灌注损伤、脑卒中、心血管、肾衰竭、肝损伤以及糖尿病并发症药物中的用途。
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