WO2013083024A1 - 一种苯并噻唑类化合物、其中间体、制备方法和应用 - Google Patents

一种苯并噻唑类化合物、其中间体、制备方法和应用 Download PDF

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WO2013083024A1
WO2013083024A1 PCT/CN2012/085813 CN2012085813W WO2013083024A1 WO 2013083024 A1 WO2013083024 A1 WO 2013083024A1 CN 2012085813 W CN2012085813 W CN 2012085813W WO 2013083024 A1 WO2013083024 A1 WO 2013083024A1
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compound
och
fluorenyl
substituted
group
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蔡勇全
蔡玲玲
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上海如絮生物科技有限公司
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K51/00Preparations containing radioactive substances for use in therapy or testing in vivo
    • A61K51/02Preparations containing radioactive substances for use in therapy or testing in vivo characterised by the carrier, i.e. characterised by the agent or material covalently linked or complexing the radioactive nucleus
    • A61K51/04Organic compounds
    • A61K51/041Heterocyclic compounds
    • A61K51/044Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins
    • A61K51/0455Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
    • C07C323/23Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton
    • C07C323/31Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton having the sulfur atom of at least one of the thio groups bound to a carbon atom of a six-membered aromatic ring of the carbon skeleton
    • C07C323/33Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton having the sulfur atom of at least one of the thio groups bound to a carbon atom of a six-membered aromatic ring of the carbon skeleton having at least one of the nitrogen atoms bound to a carbon atom of the same non-condensed six-membered aromatic ring
    • C07C323/35Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton having the sulfur atom of at least one of the thio groups bound to a carbon atom of a six-membered aromatic ring of the carbon skeleton having at least one of the nitrogen atoms bound to a carbon atom of the same non-condensed six-membered aromatic ring the thio group being a sulfide group
    • C07C323/36Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton having the sulfur atom of at least one of the thio groups bound to a carbon atom of a six-membered aromatic ring of the carbon skeleton having at least one of the nitrogen atoms bound to a carbon atom of the same non-condensed six-membered aromatic ring the thio group being a sulfide group the sulfur atom of the sulfide group being further bound to an acyclic carbon atom
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D417/00Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/04Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond

Definitions

  • the present invention specifically relates to a benzothiazole compound, an intermediate thereof, a preparation method and use. Background technique
  • AD Alzheimer's disease
  • AD Alzheimer's disease
  • the pathological features of AD include neurofibrillar tangles of beta amyloid and neurofibrillary tangles of hyperphosphorylated tau.
  • Recent developments in the treatment of AD drugs have been to control the production, aggregation, and deposition of amyloid proteins, as well as to accelerate the metabolism of amyloid from the brain.
  • Non-invasive detection of amyloid deposition in the brain has been used to develop treatment regimens against amyloid. It is useful for the early diagnosis and treatment of AD in amyloid imaging directly in patients with AD. For this reason, compounds suitable for imaging amyloid deposition in human brain have been developed on a large scale. Among these compounds, monoclonal antibodies against ⁇ have been absorbed, but these are not absorbed by the brain. A complex containing a ⁇ -peptide putrescine-oxime was injected into a transgenic mouse over-expressing ⁇ amyloid protein, and amyloid in the rat brain was observed on MRI. Amyloid deposits can also be imaged and quantified in a non-invasive manner using small molecules that are easily accessible to the brain.
  • Imaging small molecules to amyloid is by far the most successful method.
  • Some of the most promising compounds for amyloid imaging are derivatives of Congo red, thioflavin, stilbene and FDDNP.
  • Congo Red and thioflavin derivatives have been used in brain tissue sections of AD patients and staining of brain tissue sections of transgenic mice.
  • the two compounds currently undergoing human clinical trials for F18 are Eli Lilly's Florbetapir and GE's Flutemetamol. Both imaging agents have no kinetic range as indicated by the carbon- 1 1 labeled PIB.
  • the problem solved was to develop a fluorine--18 standard developer with a dynamic range exceeding PIB.
  • An effective management method for AD is to diagnose, monitor, treat and prevent this disease.
  • One object of the present invention is to provide high selectivity to amyloid, low background noise, and better entry into the brain, improving labeling. Efficiency, highly specific labeling of amyloid imaging agents. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a benzothiazole compound, an intermediate thereof and a preparation method thereof which are completely different from the prior art.
  • the benzothiazole compound of the present invention is a positive electron tomography agent, and can be used for early diagnosis of senile stagnation and tracking of drug efficacy.
  • the present invention therefore relates to a benzothiazole compound of the formula I,
  • 1 ⁇ is 11, d ⁇ C 6 fluorenyl, C 6 -C 12 aryl, or halogen (preferably F ) substituted d ⁇ C 7 fluorenyl; or R 1 and Y are bonded to form 2 - 3 carbon chain Or a thiol " 3 carbon chain;
  • 1 2 is 11, ⁇ fluorenyl (such as methyl or ethyl), halogen-substituted d ⁇ C 6 fluorenyl, d ⁇ C 3 methoxy substituted d ⁇ C 6 fluorenyl, hydroxy-substituted dC 6 fluorenyl (such as monohydroxy substituted dC 6 fluorenyl, or two hydroxy substituted isopropyl), fluoro substituted fluorenyl, -(CH 2 CH 2 O) n H , -(CH 2 CH 2 O) n CH 3 or C 6 -C 12 aryl;
  • X and Y are independently CH or N;
  • the R 1 is preferably a sulfonyl group (preferably a methyl group or an ethyl group), a fluorine-substituted dC 6 fluorenyl group (preferably a fluoromethyl group or a fluoroethyl group), or a C 6 ⁇ group.
  • C 12 aryl preferably a sulfonyl group (preferably a methyl group or an ethyl group), a fluorine-substituted dC 6 fluorenyl group (preferably a fluoromethyl group or a fluoroethyl group), or a C 6 ⁇ group.
  • C 12 aryl preferably a sulfonyl group (preferably a methyl group or an ethyl group), a fluorine-substituted dC 6 fluorenyl group (preferably a fluoromethyl group or a fluoroethyl group), or a C 6 ⁇ group
  • R 1 is H, Y is CH, X is N, and R 2 is CH 3 ;
  • R 1 is H, Y is CH, X is N, and R 2 is CH 2 CH 2 OH;
  • R 1 is H, Y is CH, X is N, R 2 is (CH 2 CH 2 O) n H, n is 1-7 (such as 2 or 3); or, R 1 is H, Y is CH , X is N, and R 2 is CH 2 F;
  • R 1 is H, Y is CH, X is N, and R 2 is CH 2 CH 2 F ;
  • R 1 is H, Y is CH, X is N, and R 2 is CH 2 CH 2 CH 2 OH;
  • R 1 is H, Y is CH, X is N, and R 2 is CH(CH 2 OH) 2 ;
  • R 1 is H, Y is CH, X is N, and R 2 is CH 2 CH 2 OCH 3 ;
  • R 1 is H, Y is CH, X is N, R 2 is (CH 2 CH 2 O) n CH 3 , n is 1-7 (such as 2 or 3); or, R 1 is CH 3 , Y Is CH, X is N, and R 2 is CH 3 ;
  • R 1 is CH 3 , Y is CH, X is N, and R 2 is CH 2 CH 2 OH;
  • R 1 is CH 3 , Y is CH, X is N, R 2 is (CH 2 CH 2 O) n H, and n is 1-7 (such as 2 or 3); Or, R 1 is CH 3 , Y is CH, X is N, and R 2 is CH 2 F;
  • R 1 is CH 3 , Y is CH, X is N, and R 2 is CH 2 CH 2 F;
  • R 1 is CH 3 , Y is CH, X is N, and R 2 is CH 2 CH 2 CH 2 OH;
  • R 1 is CH 3 , Y is CH, X is N, and R 2 is CH(CH 2 OH) 2 ;
  • R 1 is CH 3 , Y is CH, X is N, and R 2 is CH 2 CH 2 OCH 3 ;
  • R 1 is CH 3
  • Y is CH
  • X is N
  • R 2 is (CH 2 CH 2 O) n CH 3
  • n is 1-7 (such as 2 or 3).
  • the present invention also relates to a process for the preparation of the above compound I, which comprises the steps of: subjecting the compound II to the deamination of the tert-butoxycarbonyl protecting group;
  • reaction of the deaminated tert-butoxycarbonyl protecting group can be a conventional method and condition for such reactions in the art.
  • it comprises the following steps: in the solvent, the compound II is subjected to a reaction of deamination of the tert-butoxycarbonyl protecting group under the action of trifluoroacetic acid.
  • each of the conditions of the reaction can be a conventional method and condition for such a reaction in the art.
  • the preparation of the compound I preferably, can be carried out by the following reaction route:
  • each group is as described above.
  • the method and conditions of each step of the reaction can be carried out by referring to the prior art or a conventional method.
  • Dimethyl arylene f3 ⁇ 4 is also indispensable for both solvent and oxidant--the synthesis of fluorinated ruthenium is carried out by reaction bottoms and cesium fluoride in high temperature and aprotic solvents.
  • the anhydrous condition is very important.
  • the genera of the present invention can be easily labeled with 8. Since fluorine 8 has a half-life of nearly two, it is more suitable for hospital use than carbon 20 for 20 minutes.
  • the labeling of the fluorine 18 compound is completed by the reaction from the compound ⁇ 24-26. Only the fluorine 18 anion replaces the ordinary fluoride ion.
  • the present invention further relates to the preparation of any of the following intermediate compounds of the above-mentioned compound I;
  • the positive progress of the present invention is that the benzothiazole compound of the present invention is a positron emission tomography agent, and can be used for early diagnosis of senile stagnation and tracking of drug efficacy.
  • Figure 1 shows the results of autoradiography of brain tissue sections of patients with AD.
  • the brain tissue sections of AD patients have autoradiography when they have ⁇
  • the upper right and lower right are brain tissue sections of AD patients without replacement agents. Self-development at the time.
  • R 2 CH 2 CH 2 OH
  • R 2 (CH 2 CH 2 0) 2 -H
  • R 2 (CH 2 CH 2 0) 3 -H
  • R 2 (CH 2 CH 2 0) 2 -CH 3 17c
  • R 2 (CH 2 CH 2 0) 2 -CH 3
  • R 2 (CH 2 CH 2 0) 3 -CH 3 17d
  • R 2 (CH 2 CH 2 0) 3 -CH 3
  • Synthetic step of compound 20b 1.0 mmol of substrate 20a, 5 equivalents of CsF, 5.0 liters of DMF, and the reaction mixture was stirred under reflux overnight until the reaction was completed. The reaction mixture was separated in ethyl acetate and saturated brine. The organic solvent phase was dried over magnesium sulfate, the solvent was evaporated, and the crude product was separated using silica gel column.
  • R 2 CH 3 21a
  • R 1 CH 3
  • X N
  • Y CH
  • Z F
  • R 2 CH 3
  • R 2 (CH 2 CH 2 0)-H
  • R 2 (CH 2 CH 2 0) 3 -H 22c
  • R 1 CH 3
  • X N
  • Y CH
  • z F
  • R 2 (CH 2 CH 2 0) 2 -H
  • R 2 (CH 2 CH 2 0) 2 -CH 3
  • R 2 (CH 2 CH 2 0) 3 -THP
  • AD brain tissue was padded in 1:500 PBS using 800 ⁇ in each tube.
  • [3 ⁇ ] 6- ⁇ - ⁇ - ⁇ concentration was diluted with ethanol solution 1 mCi/ml to ⁇ / ⁇ microliter. Dilute further to 2,7 ⁇ 0 ⁇ 2 ⁇ . / ⁇ 00 ⁇ 1.
  • "Cold" 6-OH- ⁇ -1 or other test compound is dissolved in dimethyl sulphate to give i X l (T 3 M solution, prepared with dimethyl sulfoxide) ⁇ 4 to ix] (r ie M solution.
  • Use 10 L per tube Vortex the tube after assembly and react for 2 hours at 37 °. Separate with a cell harvester and wash the filter paper with PBS containing 10% ethanol. Place the filter paper in a 4 ml plastic bottle. Add 2 mL of scintillation fluid. Count the samples. Analyze the data using GrapliPad and obtain binding constants from the surface.
  • Determination of the binding constant of amyloid and new ligand molecules is the first step in the development of PET reagents.
  • Three types of amyloid plaques have been used as binding assays for ligands in vitro, ie, synthetic ⁇ 1-42- 1-40, transgenic mouse brain, and brain tissue of human Alzheimer's disease. Since the final test of radioactive test is carried out in humans, it is very appropriate to use human AD brain tissue for in vitro testing.
  • the binding constants Ki of the various compounds i of the present invention are listed in the following table.
  • FIG. 1 The results of autoradiography study of brain tissue sections of AD patients are shown in Figure 1.
  • the upper left and lower left of the figure are autoradiographs of brain tissue sections of patients with AD in the presence of ⁇
  • the upper right and lower right are autoradiographs of brain tissue sections of AD patients without a displacer.
  • the radiolabeled molecule 28b clearly shows spots of flour-like protein deposition in the cortex of the brain.
  • the development point is no longer developed after pretreatment with the non-labeled PIB compound. Supports the characteristic developability of radioactive reagents for flour-like protein deposition.
  • the present invention describes the synthesis, radiolabeling of a new class of radiolabeled compounds.
  • radiolabeled compounds show characteristic absorption on brain sections of AD patients. It is a good developer and is expected to provide sensitive molecular probes for the early diagnosis of senile stagnation.

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Abstract

本发明公开了一种如式I所示的苯并噻唑类化合物,其中,X、Y、R1、R2和Z'如说明书所定义。本发明还公开了上述化合物的制备方法、中间体和应用。本发明的苯并噻唑类化合物为正电子断层扫描剂,可用于对老年痴呆症的提前诊断,及对药物疗效的跟踪。

Description

一种苯并噻唑类化合物、 其中间体、 制备方法和应用 技术领域
本发明具体的涉及一种苯并噻唑类化合物、其中间体、制备方法和应用。 背景技术
阿尔茨海默氏病 (AD ) 是痴呆最常见的原因, 其特点是逐步偿失认知功 能和逐步増加行为障碍。 这种渐进的, 不可逆转的大脑功能紊乱影响了千百 万人的生命, 并在世界范围内造成一场毁灭性的健康负担。在过去二十年来, 在破译的发病机制及开发新的治疗方法已取得重大进展。 AD的病理特征包括 β淀粉样蛋白的神经斑块和超磷酸化 tau蛋白的神经纤维缠结。 最近发展治疗 AD药物的方向是控制淀粉蛋白的产生, 聚集, 和在大脑中的沉积, 以及加速 淀粉样蛋白从大脑中的代谢。
非侵入性检测淀粉样蛋白在大脑中的沉积已经被用来开发抗淀粉样蛋 白的治疗方案。 直接在 AD患者体内对淀粉样蛋白显像对 AD的早期诊断及治 疗方案的制定和评估有用。 为此, 适用于在体内给人类大脑淀粉样蛋白沉积 显像的化合物, 已经进行了大规模的研发. 在这些化合物中有针对 Αβ的单 克隆抗体, 但这些都不被大脑吸收。 含 Αβ多肽-腐胺-钆的共合物注入 Αβ淀粉 样蛋白过度表达的转基因小鼠身上, 已经在 MRI上观察到鼠脑中淀粉样蛋白。 淀粉样蛋白沉积, 也可以用易于进入大脑的小分子, 以非侵入性方式进行成 影和定量分析。
小分子给淀粉样蛋白成像是迄今最成功的方法。 最有希望给淀粉样蛋白 成像的一些化合物都是刚果红, 硫黄素, 二苯乙烯和 FDDNP的衍生物。 刚果 红和硫黄素的衍生物已经用在 AD病人脑组织切片和转基因小鼠脑组织切片 的染色上。 目前正在进行人体临床试验做 F18的两个化合物是 Eli Lilly公司的 Florbetapir和 GE公司的 Flutemetamol. 这两个成像剂都沒有碳 - 1 1标记做的 PIB所显示的动力学范围. 该发明所期望解决的问题就是开发动力学范围超 过 PIB的氟 -18标显影剂.
对 AD症的有效管理方法就是, 诊断, 监测, 治疗和预防这种疾病. 一 个本发明的目的就是要提供具有对淀粉样蛋白高度选择性, 低背景噪音, 同 时更好的进入大脑, 提高标记效率, 高特异性标记淀粉样的显像剂。 发明内容
本发明所要解决的技术问题是提供了一种与现有技术完全不同的苯并 噻唑类化合物、 其中间体及其制备方法。 本发明的苯并噻唑类化合物为正电 子断层扫描剂, 可用于对老年凝呆症的提前诊断, 及对药物疗效的跟踪。
因此本发明涉及一种如式 I所示的苯并噻唑类化合物,
Figure imgf000003_0001
I
其中, 1^是11、 d~C6垸基、 C6~C12芳基、 或卤素 (优选 F ) 取代的 d~C7垸基; 或者 R1和 Y联结形成 2- 3的碳链或者硫代的 「 3的碳链; 1 2是11、 ^〜^垸 基 (如甲基或乙基) 、 卤素取代的 d~C6垸基、 d~C3垸氧基取代的 d~C6垸 基、 羟基取代的 d-C6垸基 (如单羟基取代的 d-C6垸基, 或者两个羟基取代 的异丙基)、 氟取代的 垸基、 -(CH2CH2O)nH、 -(CH2CH2O)nCH3或 C6~C12 芳基; X和 Y独立的是 CH或 N; Z,为 F或 F18, n为 1-7。
本发明中, 所述的 R1较佳的为^-^^垸基 (优选甲基或乙基) 、 氟取代的 d-C6垸基 (优选氟甲基或氟乙基) 、 或者 C6~C12芳基。
本发明中, 所述的化合物 I中, 更佳的:
R1为 H, Y为 CH, X为 N, R2为 CH3;
或者, R1为 H, Y为 CH , X为 N, R2为 CH2CH2OH;
或者, R1为 H, Y为 CH , X为 N, R2为(CH2CH2O)nH, n为 1-7 (如 2或 3 ) ; 或者, R1为 H, Y为 CH , X为 N, R2为 CH2F;
或者, R1为 H, Y为 CH , X为 N, R2为 CH2CH2F ;
或者, R1为 H, Y为 CH , X为 N, R2为 CH2CH2CH2OH;
或者, R1为 H, Y为 CH , X为 N, R2为 CH(CH2OH)2;
或者, R1为 H, Y为 CH , X为 N, R2为 CH2CH2OCH3 ;
或者, R1为 H, Y为 CH, X为 N, R2为(CH2CH2O)nCH3, n为 1-7 (如 2或 3 ); 或者, R1为 CH3, Y为 CH, X为 N, R2为 CH3 ;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2CH2OH;
或者, R1为 CH3, Y为 CH, X为 N, R2为(CH2CH2O)nH, n为 1-7 (如 2或 3 ); 或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2F;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2CH2F;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2 CH2CH2OH;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH(CH2OH)2;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2CH2OCH3 ;
或者, R1为 CH3, Y为 CH, X为 N, R2为(CH2CH2O)nCH3, n为 1-7 (如 2 或 3 ) 。
本发明还涉及一种制备上述化合物 I的制备方法, 其包含下列步骤: 将化 合物 II进行脱去氨基的叔丁氧羰基保护基的反应, 即可;
Figure imgf000004_0001
II I 其中, 各基团的定义均同前所述。
其中, 所述的脱去氨基的叔丁氧羰基保护基的反应可为本领域此类反应 的常规方法和条件。 较佳的, 其包含下列步骤: 溶剂中, 在三氟醋酸的作用 下, 将化合物 II进行脱去氨基的叔丁氧羰基保护基的反应, 即可。 其中, 所 述的反应的各条件均可为本领域此类反应的常规方法和条件。
本发明中, 所述的化合物 I的制备, 较佳的, 可采用下述反应路线进行:
Figure imgf000004_0002
Figure imgf000005_0001
Figure imgf000005_0002
Figure imgf000005_0003
其中, 各基团的定义同前所述。 上述路线中, 各步反应的方法和条件均 可参照现有技术或常规方法进行。
该路线中, 含硫的苯并噻唑的合成这个反应由亚铜盐催化, 各种取代基 对反应产率影响不大。 因为含硫的试剂不够, 我们也发展了芳香硫化德和磺 酸脂的取代反应制备硫化麴 7 10系列 (化合 tJVli ) 。 我 Π需要邻氮基硫酚 強碱水解内銑胺 U 14系列制备。 我们感兴齄的 2 芳基苯并噻锉的合成由邻 氨基硫酚和醛在二甲亚砜中合成。 二甲亚 f¾兼作溶剂和氧化剂 是不可或缺 的―' 含氟化合麴的合成由反应底 ¾1和氟化铯在高温和非质子性溶剂中迸行。 无水条件很重要。 本发明的衔生物可以很容易地用 8 标记。 由于氟 8有将近二小 的半 衰期, 同碳 1 1的 20分钟相比, 更适合在医院使用。 氟 18化合物的标记由从 化合麴 24- 26的反应完成。 只是氟 18负离子取代了普通的氟离子。
本发明迸一步涉及制备上述化合德 I的以下任一中间体化合物;
Figure imgf000006_0001
VIII 其中, 各基团的定义均同前所述。 其中 II, III, IV, VI, VII, VIII为新化合 物。 本发明进一步涉及上述化合物 I作为正电子断层扫描剂的应用, 化合物 I 中, Z'为 F18
在不违背本领域常识的基础上, 上述各优选条件, 可任意组合, 即得本 发明各较佳实例。
除特殊说明外, 本发明所用试剂和原料均市售可得。
本发明的积极进步效果在于: 本发明的苯并噻唑类化合物为正电子断层 扫描剂, 可用于对老年凝呆症的提前诊断, 及对药物疗效的跟踪。 附图说明
图 1 为 AD病人脑组织切片的自显影研究结果, 图中左上和左下为 AD 病人脑组织切片在有 Ι μΜ ΡΙΒ时的自显影, 而右上和右下为 AD病人脑组织 切片在没置换剂时的自显影。 具体实施方式
下面通过实施例的方式进一步说明本发明, 但并不因此将本发明限制在 所述的实施例范围之中。 下列实施例中未注明具体条件的实验方法, 按照常 规方法和条件, 或按照商品说明书选择。
实施例 1 化合麴 2a~2e的制备
Figure imgf000007_0001
2a, Rz = CH3
2b, R2 = CH2CH2OH
2c, R2 = (CH2CH20)2-H
2d, R2 = (CH2CH20)3-H
2e, R2 = CH2CH2C02CH3 一般合成步骤: 1.0毫摩尔底物 1, 1.2当量 R2-SH, 0.2当量 CuCl, 5.0 亳升 DMF, 反应混合物加热至 120度, 搅拌直至反应完成. 反应混合物在 乙酸乙脂和饱和盐水中分离. 有机溶剂相在硫酸镁中干燥. 抽干溶剂, 粗产品用硅胶柱分离. 化合物 2a, 1H NMR (400 MHz; CDC13), δ 7.62 (d, 3JHH = 8.9 Hz, 1H, Ar-H) 7.55 (dd, 3JHH = 9.0 Hz, 4JHH = 2.6 Hz, 1H, Ar-H), 7.06 (d, 4JHH = 2.6 Hz, 1H, NH), 2.53 (s, 3H, SCH3). 化合物 2b, 1H NMR (400 MHz; CDC13), δ 7.60 (d, 3JHH = 8.9 Hz, 1H, Ar-H) 7.50 (dd, 3JHH = 9.0 Hz, 4JHH = 2.6 Hz, 1H, Ar-H), 7.16 (d, 4JHH = 2.6 Hz, 1H, NH), 3.67 (t, 3JHH = 7 Hz, 2H, OCH2), 3.20 (t, 3JHH = 7 Hz, 2H, SCH2). 化合物 2c, 1H NMR (400 MHz; CDC13), δ 7.50 (d, 3JHH = 8.9 Hz, 1H, Ar-H) 7.46 (dd, 3JHH = 9.0 Hz, 4JHH = 2.6 Hz, 1H, Ar-H), 7.10 (d, 4JHH = 2.6 Hz, 1H, NH), 3.70 (t, 3JHH = 7 Hz, 2H, OCH2), 3.50 (t, 3JHH = 7 Hz, 2H, OCH2), 3.40 (t, 3JHH = 7 Hz, 2H, OCH2), 3.10 (t, 3JHH = 7 Hz, 2H, SCH2). 化合物 2d, lH NMR (400 MHz; CDC13), δ 7.50 (d, 3JHH = 8.9 Hz, 1 H, Ar-H)
7.46 (dd, 3JHH = 9.0 Hz, 4JHH 2.6 Hz, 1 H, Ar-H), 7. 10 (d, 4JHH = 2.6 Hz, 1 H
NH), 3.70 (t, 3JHH = 7 Hz, 2H, OCH2), 3.50 (t, 3JHH = 7 Hz, 2H, OCH2), 3.40 (t 3JHH = 7 Hz, 2H, OCH2), 3.45 (t, 3JHH = 7 Hz, 2H, OCH2), 3.37 (t, 3JHH = 7 Hz, 2H, OCH2), 3. 10 (t, 3JHH =, Hz, 2H, SCH2).
实施例 2 化合物 7-10系列的制备
Figure imgf000008_0001
10c, R2 = (CH2CH20)2-THP 10d, R2 = (CH2CH20)3-THP 化合物 7- 10的一般合成步骤: 1 .0毫摩尔底物 2e, 1 .2当量
R2-OTs/R2-Br, 1 .5当量碱(Phosphazene base Pi-t-Bu) , 5.0亳升乙晴, 反应混 合物加热至 80度, 搅拌直至反应完成, 反应混合物在乙酸乙脂和饱和盐水中 分离。 有机溶剂相在硫酸镁中干燥, 抽干溶剂, 粗产品用硅胶柱分离。 化合物 8b, !H NMR (400 MHz; CDC13), δ 7.62 (d, 3JHH = 8.9 Hz, 1 H, Ar-H), 7.56 (d, 3JHH = 9.0 Hz, 1 H, Ar-H), 7.08 (s, 1 H, Ar-H), 3.67 (t, 3JHH = 7 Hz, 2H, OCH2), 3.32 (t, 3JHH = 7 Hz, 2H, SCH2). 化合物 8c, lH NMR (400 MHz; CDC13), δ 7.64 (d, 3JHH = 8.9 Hz, 1 H, Ar-H), 7.54 (d, 3JHH = 9.0 Hz, 1 H, Ar-H), 7. 10 (s, 1 H, Ar-H), 3.67 (t, 3JHH = 7 Hz, 2H, OCH2), 3.40-3.60 (m, 4H, OCH2), 3.32 (t, 3JHH = 7 Hz, 2H, SCH2). 化合物 8d, !H NMR (400 MHz; CDC13), δ 7.66 (d, 3JHH = 8.9 Hz, 1 H, Ar-H) 7.50 (d, 3JHH = 9.0 Hz, 1 H, Ar-H), 7. 10 (s, 1 H, Ar-H), 3.67 (t, JHH = 7 Hz, 2H, OCH2), 3.40-3.60 (m, 8H, OCH2), 3.32 (t, 3JHH = 7 Hz, 2H, SCH2). 化合物 9b, 1H NMR (400 MHz; CDC13), δ 7.62 (d, 3JHH = 8.9 Hz, 1H, Ar-H) 7.56 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.05 (s, 1H, Ar-H), 3.71 (t, 3JHH = 7 Hz, 2H, OCH2), 3.30 (s, 3H, OCH3), 3.25 (t, 3JHH = 7 Hz, 2H, SCH2). 化合物 9c, 1H NMR (400 MHz; CDC13), δ 7.62 (d, 3JHH = 8.9 Hz, 1H, Ar-H) 7.56 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.05 (s, 1H, Ar-H), 3.71 (t, 3JHH = 7 Hz, 2H, OCH2), 3.54 (m, 4H, OCH2CH2O), 3.30 (s, 3H, OCH3), 3.25 (t, 3JHH = 7 Hz, 2H, SCH2). 化合物 9d, lR NMR (400 MHz; CDC13), δ 7.62 (d, 3JHH = 8.9 Hz, 1H, Ar-H) 7.55 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.08 (s, 1H, Ar-H), 3.71 (t, 3JHH = 7 Hz, 2H, OCH2), 3.54 (m, 8H, OCH2CH2O), 3.30 (s, 3H, OCH3), 3.25 (t, 3JHH = 7 Hz, 2H, SCH2). 化合物 10b, 1H NMR (400 MHz; CDC13), δ 7.61 (d, 3JHH = 8.9 Hz, 1H, Ar-H), 7.54 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.03 (s, 1H, Ar-H), 4.95 (t, 3JHH = 7 Hz, 1H, OCH), 3.55-3.71 (m, 4H, OCH2), 3.32 (t, 3JHH = 7 Hz, 2H, SCH2),
1 .55- 1.86 (m, 6H, CH2). 化合物 10c, lR NMR (400 MHz; CDC13), δ 7.61 (d, 3JHH = 8.9 Hz, 1H, Ar-H), 7.54 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.03 (s, 1H, Ar-H), 4.95 (t, 3JHH = 7 Hz, 1H, OCH), 3.55-3.71 (m, 8H, OCH2), 3.32 (t, 3JHH = 7 Hz, 2H, SCH2),
1 .55- 1.86 (m, 6H, CH2). 化合物 10d, 1H NMR (400 MHz; CDC13), δ 7.61 (d, 3JHH = 8.9 Hz, 1H, Ar-H), 7.54 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.03 (s, 1H, Ar-H), 4.95 (t, 3JHH = 7 Hz, 1H, OCH), 3.55-3.71 (m, 12H, OCH2), 3.32 (t, 3JHH = 7 Hz, 2H, SCH2),
1 .55- 1.86 (m, 6H, CH2). 实施例 3 化合物 15-18系列的制备
Figure imgf000010_0001
11a, R2 = CH3 15a, R2 = CH3
12b, R2 = (CH2CH20)-H 16b, R2 = (CH2CH20)-H
12c, R2 = (CH2CH20)2-H 16c, R2 = (CH2CH20)2-H
12d, R2 = (CH2CH20)3-H 16d, R2 = (CH2CH20)3-H
13b, R2 = (CH2CH20)-CH3 17b, R2 = (CH2CH20)-CH3
13c, R2 = (CH2CH20)2-CH3 17c, R2 = (CH2CH20)2-CH3
13d, R2 = (CH2CH20)3-CH3 17d, R2 = (CH2CH20)3-CH3
14b, R2 = (CH2CH20)-THP 18b, R2 = (CH2CH20)-THP
14c, R2 = (CH2CH20)2-THP 18c, R2 = (CH2CH20)2-THP
14d, R2 = (CH2CH20)3-THP 18d, R2 = (CH2CH20)3-THP
化合物 15-18的一般合成步骤: 1.0毫摩尔底物 1 1-14, 5克 KOH, 5.0亳升 甲醇, 反应混合物加热至回流, 搅拌直至反应完成。 把反应混合物倒入冰水 中, 加乙酸调节 pH至中性, 在反应混合物加入乙酸乙脂和饱和盐水, 进行 分离。 有机溶剂相在硫酸镁中干燥, 抽干溶剂, 粗产品直接使用。
实施例 4 化合物 20系列的制备
Figure imgf000010_0002
19a, X = N, Y = CH, Z = CI 20a, X = N, Y = CH, Z = CI
19b, X = N, Y = CH, Z = F 20b, X = N, Y = CH, Z = F
19c, X = N, Y = CH, Z = H 20c, X = N, Y = CH, Z = H
化合物 20的一般合成步骤: 1.0毫摩尔底物 19, 3当量 Li3N, 10当量 CH3I,
5.0亳升四氢呋喃, 反应混合物在室温下, 搅拌一晚直至反应完成。 反应混合 物在乙酸乙脂和饱和盐水中分离。 有机溶剂相在硫酸镁中干燥, 抽干溶剂, 粗产品用硅胶柱分离。 化合物 20a, :H NMR (400 MHz; CDC13), δ 9.70 (s, 1H, CHO), 8.80 (d, 3J = 9.0 Hz, 1H, Ar-H), 8.60 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 3.41 (s, 3H, NCH3), 1.28 (s, 9H, CH3). 化合物 20b, 1H NMR (400 MHz; CDC13), δ 9.75 (s, IH, CHO), 8.91 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, IH, Ar-H), 8.43 (d, 3JHH = 9.0 Hz, IH, Ar-H), 3.41 (s, 3H, NCH3), 1.28 (s, 9H, CH3). 化合物 20bc, 1H NMR (400 MHz; CDC13), δ 9.70 (s, IH, CHO), 8.80 (d, 3JHH = 9.0 Hz, IH, Ar-H), 8.60 (d, 3JHH = 9.0 Hz, IH, Ar-H), 8.51 (s, IH, Ar-H) 3.41 (s, 3H, NCH3), 1.28 (s, 9H, CH3).
实施例 5 化合物 20系列的制备
Figure imgf000011_0001
20a, X = N, Y = CH, Z = CI
化合物 20b的合成步骤: 1.0毫摩尔底物 20a, 5当量 CsF, 5.0亳升 DMF, 反 应混合物在回流下, 搅拌一晚直至反应完成。 反应混合物在乙酸乙脂和饱和 盐水中分离。 有机溶剂相在硫酸镁中干燥, 抽干溶剂, 粗产品用硅胶柱分离。
Figure imgf000012_0001
15a, R2 = CH3 21a, R1 = CH3 , X = N, Y = CH, Z = F, R2 = CH3
16b, R2 = (CH2CH20)-H
16c, R2 = (CH2CH20)2-H 22b, R1 = CH3 , X = N, Y = CH, z = F, R2 = CH2CH2OH
16d, R2 = (CH2CH20)3-H 22c, R1 = CH3 , X = N, Y = CH, z = F, R2 = (CH2CH20)2-H
17b, R2 = (CH2CH20)-CH3 22d, R1 = CH3 , X = N, Y = CH, z = F, R2 = (CH2CH20)3-H
17c, R2 = (CH2CH20)2-CH3
17d, R2 = (CH2CH20)3-CH3 23b, R1 = CH3 , X = N, Y = CH, z = F, R2 = CH2CH2OCH3
18b, R2 = (CH2CH20)-THP 23c, R1 = CH3 , X = N, Y = CH, z = F, R2 = (CH2CH20)2-CH3
18c, R2 = (CH2CH20)2-THP 23d, R1 = CH3 , X = N, Y = CH, z = F, R2 = (CH2CH20)3-CH3
18d, R2 = (CH2CH20)3-THP
24a, R1 = CH3 , X = N, Y = CH, z = CI, R2 = CH3
19a, R1 = H, X = N, Y = CH, Z = CI 25b, R1 = CH3 , X = N, Y = CH, z = CI, R2 = CH2CH2OCH3
19b, R1 = H, X = N, Y = CH, Z = F 25c, R1 = CH3 , X = N, Y = CH, z = CI, R2 = (CH2CH20)2-CH3
19c, R1 = H, X = N, Y = CH, Z = H 25d, R1 = CH3 , X = N, Y = CH, z = CI, R2 = (CH2CH20)3-CH3
20a, R1 = CH3, X = N, Y = CH, Z = CI 26b, R1 = CH3 , X = N, Y = CH, z = CI, R2 = CH2CH2OTHP
20b, R1 = CH3, X = N, Y = CH, Z = F 26c, R1 = CH3 , x = N, Y = CH, z = CI, R2 = (CH2CH20)2-THP
20c, R1 = CH3, X = N, Y = CH, Z = H 26d, R1 = CH3 , x = N, Y = CH, z = CI, R2 = (CH2CH20)3-THP
化合物 21 -26的一般合成步骤: 1.0毫摩尔底物 15- 18, 1当量 19-20, 5.0 亳升二甲亚砜, 反应混合物在 120度下, 搅拌一晚直至反应完成. 反应混 合物在乙酸乙脂和饱和盐水中分离. 有机溶剂相在硫酸镁中干燥. 抽干溶 剂, 粗产品用硅胶柱分离. 化合物 21 a, 1H NMR (400 MHz; CDC13), δ 8.55 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, 1H, Ar-H), 8.20 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 8.03 (s, 1H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, IH, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, IH, Ar-H), 3.41 (s, 3H, NCH3), 2.51 (s, 3H, SCH3), 1.28 (s, 9H, CH3). 化合物 22b, lR NMR (400 MHz; CDC13), δ 8.57 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, 1H, Ar-H), 8.24 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 8.03 (s, 1H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, IH, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, I H, Ar-H), 3.67 (t, 3JHH = 7.0 Hz, 2H, OCH2), 3.41 (s, 3H, NCH3), 3.25 (t, 3JHH = 7.0 Hz, 2H, SCH2), 1 .28 (s, 9H, CH3).
Figure imgf000013_0001
p3 ΐ££Vΐ 06)VVΐ 06//H ¾ LLH ¾aJJ = =--- . ·...
一s^≤ΐ 060∞3800s ¾KHM H δN = ... Hz, 1H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 3.41 (s, 3H, NCH3), 2.51 (s, 3H, SCH3), 1.28 (s, 9H, CH3). 化合物 25b, lR NMR (400 MHz; CDC13), δ 8.42 (dd, 3JHH = 9.0 Hz, 1H, Ar-H), 8.31 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 8.03 (s, 1H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 3.70 (t, 3JHH = 7.0 Hz, 2H, OCH2), 3.41 (s, 3H, NCH3), 3.30 (s, 3H, OCH3), 3.25 (t, 3JHH = 7.0 Hz, 2H, SCH2), 1.28 (s, 9H, CH3). 化合物 25c, lR NMR (400 MHz; CDC13), δ 8.44 (dd, 3JHH = 9.0 Hz, 1H, Ar-H), 8.26 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 8.03 (s, 1H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 3.54-3.71 (m, 6H, OCH2), 3.41 (s, 3H, NCH3), 3.30 (s, 3H, OCH3), 3.25 (t, 3JHH = 7.0 Hz, 2H, SCH2), 1 .28 (s, 9H, CH3). 化合物 25d, lR NMR (400 MHz; CDC13), δ 8.47 (dd, 3JHH = 9.0 Hz, 1H, Ar-H), 8.28 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 8.03 (s, 1H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 3.44-3.71 (m, 10H, OCH2), 3.41 (s, 3H, NCH3), 3.35 (s, 3H, OCH3), 3.25 (t, 3JHH = 7.0 Hz, 2H, SCH2), 1 .28 (s, 9H, CH3). 化合物 26b, lR NMR (400 MHz; CDC13), δ 8.44 (dd, 3JHH = 9.0 Hz, 1H, Ar-H), 8.38 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 8.03 (s, 1H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 4.95 (t, 3JHH = 7.0 Hz, 1H, OCH), 3.55-3.71 (m, 4H, OCH2), 3.41 (s, 3H, NCH3), 2.95 (t, 3JHH = 7.0 Hz, 2H. SCH2), 1.55- 1.76 (m, 6H, CH2), 1.28 (s, 9H, CH3). 化合物 26c, lR NMR (400 MHz; CDC13), δ 8.44 (dd, 3JHH = 9.0 Hz, 1H, Ar-H), 8.38 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 8.03 (s, 1H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, 1H, Ar-H), 4.95 (t, 3JHH = 7.0 Hz, 1H, OCH), 3.55-3.71 (m, 8H, OCH2), 3.41 (s, 3H, NCH3), 2.95 (t, 3JHH = 7.0 Hz, 2H. SCH2), 1.55- 1.76 (m, 6H, CH2), 1.28 (s, 9H, CH3). 化合物 26d, 1H NMR (400 MHz; CDC13), δ 8.44 (dd, 3JHH = 9.0 Hz, IH, Ar-H), 8.38 (d, 3JHH = 9.0 Hz, IH, Ar-H), 8.03 (s, IH, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, IH, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, IH, Ar-H), 4.95 (t, 3JHH = 7.0 Hz, 1H, OCH), 3.55-3.71 (m, 12H, OCH2), 3.41 (s, 3H, NCH3), 2.95 (t, 3JHH = 7.0 Hz, 2H, SCH2), 1.55- 1 .76 (m, 6H, CH2), 1.28 (s 9H, CH3).
实施例 7 化合物 27、 28和 29系列 (化合物 I) 的制备
Figure imgf000015_0001
27a, R1 = CH3, X = N, Y = CH, Z = F, R2 = CH3
28b, R1 = CH3, x = N, Y = CH, z = F, R2 = CH2CH2OH
28c, R1 = CH3, x = N, Y = CH, z = F, R2 = (CH2CH20)2-H
28d, R1 = CH3, X = N, Y = CH, z = F, R2 = (CH2CH20)3-H
29b, R1 = CH3, x = N, Y = CH, z = F, R2 = CH2CH2OCH3
29c, R1 = CH3, x = N, Y = CH, z = F, R2 = (CH2CH20)2-CH:
29d, R1 = CH3, x = N, Y = CH, z = F, R2 = (CH2CH20)3-CH:
化合物 27-29的一般合成步骤: 1.0毫摩尔底物 21 -26, 溶于 5毫升三氟乙 酸, 反应混合物在 120度下, 搅拌一晚直至反应完成. 反应混合物在乙酸 乙脂和饱和盐水中分离. 有机溶剂相在硫酸镁中干燥. 抽干溶剂, 粗产 品用硅胶柱分离. 化合物 27a, lR NMR (400 MHz; CDC13), δ 8. 17 (d, 3JHH - Ar-H), 7.56 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, 1 H, Ar-H), 8.03 (s, IH, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, 1 H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, I H, Ar-H), 2.80 (s, 3H NCH3), 2.51 (s, 3H, SCH3).
化合物 28b, lR NMR (400 MHz; CDC13), δ 8.17 (d, 3JHH = 9.0 Hz, IH, Ar-H), 7.56 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, IH, Ar-H), 8.03 (s, IH, Ar-H) 7.65 (d, 3JHH = 9.0 Hz, 1 H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, I H, Ar-H), 3.67 (t, jJHH = 7.0 Hz, 2H, OCH2), 3.27 (t, 3JHH = 7.0 Hz, 2H, SCH2), 2.80 (s, 3H,
NCH3). 化合物 28c, lH NMR (400 MHz; CDC13), δ 8. 17 (d, 3JHH = 9.0 Hz, I H, Ar-H), 7.56 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, I H, Ar-H), 8.03 (s, I H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, 1 H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, I H, Ar-H), 3.44-3.71 (m, 6H, OCH2), 3.27 (t, 3JHH = 7.0 Hz, 2H, SCH2), 2.80 (s, 3H, NCH3). 化合物 28d, lH NMR (400 MHz; CDC13), δ 8. 17 (d, 3JHH = 9.0 Hz, I H, Ar-H), 7.56 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, I H, Ar-H), 8.03 (s, I H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, I H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, I H, Ar-H), 3.44-3.71 (m, 10H, OCH2), 3.27 (t, 3JHH = 7.0 Hz, 2H, SCH2), 2.80 (s, 3H, NCH3). 化合物 29b, lH NMR (400 MHz; CDC13), δ 8. 17 (d, 3JHH = 9.0 Hz, 1 H,
Ar-H), 7.56 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, I H, Ar-H), 8.03 (s, I H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, I H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, 1 H, Ar-H), 3.67 (t, 3JHH = 7.0 Hz, 2H, OCH2), 3.30 (s, 3H, OCH3), 3.27 (t, 3JHH = 7.0 Hz, 2H, SCH2), 2.80 (s, 3H, NCH3). 化合物 29c, lH NMR (400 MHz; CDC13), δ 8. 17 (d, 3JHH = 9.0 Hz, I H, Ar-H), 7.56 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, I H, Ar-H), 8.03 (s, I H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, I H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, 1 H, Ar-H), 3.44-3.71 (m, 6H, OCH2), 3.30 (s, 3H, OCH3), 3.27 (t, 3JHH = 7.0 Hz, 2H, SCH2), 2.80 (s, 3H, NCH3). 化合物 29d, lH NMR (400 MHz; CDC13), δ 8. 17 (d, 3JHH = 9.0 Hz, I H, Ar-H), 7.56 (dd, 3JHH = 9.0 Hz, 3JHF = 12.0 Hz, I H, Ar-H), 8.03 (s, I H, Ar-H), 7.65 (d, 3JHH = 9.0 Hz, I H, Ar-H), 7.47 (d, 3JHH = 9.0 Hz, I H, Ar-H), 3.44-3.71 (m, 10H, OCH2), 3.30 (s, 3H, OCH3), 3.27 (t, 3JHH = 7.0 Hz, 2H, SCH2), 2.80 (s, 3H, NCH3). 效果实施例
体外结合实验
AD脑组织匀桨在 1:500 PBS中, 在每个试管中使用 800μ 。 [3Η] 6-ΟΗ- ΒΤΑ- ί浓度用乙醇丛 1 mCi/毫升原液稀释到 Ιμ /ΙΟΟ微升。 进一步稀释 至 2,7χ 0··2μ. /Ι00μ1. 每管中使用 00μΙ.。 "冷 "的 6- OH- ΒΤΑ- 1或其他待测化 合物溶于二甲亚¾中,得到 iXl(T3M 溶液,用二甲亚砜配制】 χΐθ·4至 ix】(rieM 溶液。 每管中使用 10 L. 组装后 涡旋试管, 并在 37度下反应 2小时。 使用细 胞收集器分离, 用含 10%乙醇的 PBS洗绦滤纸. 将滤纸放入 4毫升塑料瓶, 加 入 2mL闪烁液。 对样品进行计数。 使用 GrapliPad对数据进行分析, 从面得到 结合常数。
在体外试验
测定 淀粉样蛋白和新配体分子的结合常数是发展 PET试剂的第一步。 三种类型的淀粉样蛋白斑已被用来做配体在体外的结合试验、 即合成 β1-42- 1-40, 转基因小鼠脑, 和人类阿尔茨海默氏病 的脑组织。 由 于放射性试剤最终测试是在人类中迸行,使用人类 AD脑组织做体外试验是非 常恰当的。
体外结合实验用氚标 6-OH-BTA-1作为标记试剂, 分别使用非放射性 6-ΟΗ-ΒΤΑ- 1和本发明的化合物 I进行竞争试验, 从而测定结合常数 Ki。
本发明的各种化合物 i的结合常数 Ki列于下表。
Figure imgf000017_0001
AD病人脑组织切片的自显影研究结果, 结果见图 1。 图中左上和左下为 AD病人脑组织切片在有 Ι μΜ ΡΙΒ时的自显影, 而右上和右下为 AD病人脑组 织切片在没置换剂时的自显影。 从图 1上可以看出, 放射性标记分子 28b清楚 地显示大脑一皮层中面粉样蛋白沉积的斑点。 显影点在用非标记 PIB化合物 预处理后, 不再显影。 支持放射性试剂对面粉样蛋白沉积的特征显影性。
结论
本发明描述了新一类放射性标记化合物的合成, 放射性标记。 这类放射 性标记化合物在 AD病人脑切片上显示特征吸收。 是一种良好的显影剂, 有 望为老年性凝呆症的早期诊断提供灵敏的分子探针。

Claims

m ^
1、 一种如式 I所示的苯并噻唑类化合物;
Figure imgf000019_0001
I
其中, 1^是11、 d~C6垸基、 C6~C12芳基、 或卤素取代的 d~C7垸基; 或者 R1 和 Y联结形成 2- 3的碳链或者硫代的 「 3的碳链; 1 2是11、 d~C6垸基、 卤 素取代的 〜^垸基、 d~C3垸氧基取代的 d~C6垸基、羟基取代的 d-C6垸基、 氟取代的 d~C6垸基、 -(CH2CH2O)nH、 -(CH2CH2O)nCH3或 C6~C12芳基; X和 Y 独立的是 CH或 N; Z,为 F或 F18, n为 1 -7。
2、 如权利要求 1所述的苯并噻唑类化合物, 其特征在于: R1中, 所述的 卤素为 F。
3、 如权利要求 1所述的苯并噻唑类化合物, 其特征在于: R1中, 所述的 ^- 6垸基为甲基或乙基等。
4、 如权利要求 1所述的苯并噻唑类化合物, 其特征在于: R1中, 所述的 卤素取代的 d~C7垸基,为氟取代的 d-C6垸基,其中的 d-C6垸基为甲基或乙基 等
5、 如权利要求 1所述的苯并噻唑类化合物, 其特征在于: R2中, 所述的 ^- 6垸基为甲基或乙基等。
6、 如权利要求 1所述的苯并噻唑类化合物, 其特征在于: 当 R2是羟基取 代的 ^-^^垸基时, 所述的羟基取代的 d-C6垸基为单羟基取代的 d-C6垸基, 或者两个羟基取代的异丙基。
7、 如权利要求 1~6所述的苯并噻唑类化合物, 其特征在于: 所述的化合 物 I中:
R1为 H, Y为 CH, X为 N, R2为 CH3;
或者, R1为 H, Y为 CH, X为 N, R2为 CH2CH2OH;
或者, R1为 H, Y为 CH, X为 N, R2为(CH2CH2O)nH, n为 2或 3 ; 或者, R1为 H, Y为 CH, X为 N R2为 CH2F;
或者, R1为 H, Y为 CH, X为 N R2为 CH2CH2F ;
或者, R1为 H, Y为 CH, X为 N R2为 CH2CH2CH2OH;
或者, R1为 H, Y为 CH, X为 N R2为 CH(CH2OH)2;
或者, R1为 H, Y为 CH, X为 N R2为 CH2CH2OCH3 ;
或者, R1为 H, Y为 CH, X为 N R2为(CH2CH2O)nCH3
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH3 ;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2CH2OH;
或者, R1为 CH3, Y为 CH, X为 N, R2为(CH2CH2O)nH, n为 2或 3 ;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2F;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2CH2F;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2 CH2CH2OH;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH(CH2OH)2;
或者, R1为 CH3, Y为 CH, X为 N, R2为 CH2CH2OCH3 ;
或者, R1为 CH3, Y为 CH, X为 N, R2为(CH2CH2O)nCH3, n为 2或 3
8、 如权利要求 1~7任一项所述的化合物 I的制备方法, 其包含下列步骤: 将化合物 II进行脱去氨基的叔丁氧羰基保护基的反应, 即可;
Figure imgf000020_0001
II I 其中, 各基团的定义同权利要求 1~7任一项所述。
9、 制备权利要求 1~7任一项所述的化合物 I的以下任一中间体化合物:
Figure imgf000021_0001
Figure imgf000021_0002
Figure imgf000021_0003
VIII 其中, 各基团的定义同权利要求 1~7任一项所述。
10、如权利要求 1~7任一项所述的化合物 I作为正电子断层扫描剂的应用, 化合物 I中, Z,为 F18
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