CN113149970A - 一种8-(吡啶三氮唑)取代香豆素类化合物及其制备方法和应用 - Google Patents
一种8-(吡啶三氮唑)取代香豆素类化合物及其制备方法和应用 Download PDFInfo
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- CN113149970A CN113149970A CN202110244787.6A CN202110244787A CN113149970A CN 113149970 A CN113149970 A CN 113149970A CN 202110244787 A CN202110244787 A CN 202110244787A CN 113149970 A CN113149970 A CN 113149970A
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- Prior art keywords
- coumarin compound
- substituted coumarin
- substituted
- sirt2
- pyridyltriazole
- Prior art date
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- JVNIAJRGELYGEG-UHFFFAOYSA-N pyridine;2h-triazole Chemical group C1=CNN=N1.C1=CC=NC=C1 JVNIAJRGELYGEG-UHFFFAOYSA-N 0.000 title claims abstract description 31
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Abstract
本发明涉及一种8‑(吡啶三氮唑)取代香豆素类化合物及其制备方法和应用,所述8‑(吡啶三氮唑)取代香豆素类化合物的结构如式(I)所示,其中,A环独立地选自苯基、萘基、5‑14元芳杂环基。本发明所涉及的8‑(吡啶三氮唑)取代香豆素类化合物是一种全新的化合物结构,显示出良好的SIRT2抑制活性,且对神经瘤细胞具有显著的保护效果。因此可以被广泛用于制备用于治疗和/或预防与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症的药物或制备用于治疗和/或预防帕金森病、代谢性疾病、肿瘤的药物。
Description
技术领域
本发明属于医药技术领域,具体涉及一种8-(吡啶三氮唑)取代香豆素类化合物及其制备方法和应用,尤其涉及一种能够抑制SIRT2活性或表达的8-(吡啶三氮唑)取代香豆素类化合物及其制备方法和应用。
背景技术
帕金森病是一种常见的神经退行性疾病,其临床主要表现为患者行动迟缓、肌僵直以及静止性震颤。帕金森病的病理改变主要体现在中脑黑质多巴胺能神经元的变性坏死,及由此引起纹状体多巴胺含量的显著减少。帕金森病患者承受着生理和心理上的沉重负担。但是目前没有药物能够对帕金森病神经细胞的退行性病变起到保护作用。市场上对于帕金森病的治疗药物(如左旋多巴)主要是针对疾病症状进行缓解,长期服用这类药物给患者带来很严重的副反应。因此,探索新的帕金森病治疗方法,发现新的帕金森病治疗药物具有非常重要的意义。
作为Sirtuin家族中的重要一员,SIRT2主要分布于细胞质中,其作用的底物蛋白包括α-tubulin、histone H4、p53、FOXO和14-3-3protein。SIRT2的功能研究表明:SIRT2通过去乙酰化H4-K16调控细胞有丝分裂的进程;SIRT2通过激活APC/C系统的活性来维持基因组的稳定;SIRT2介导Receptor-interacting protein 1和3(RIP1和RIP3)的相互结合从而调控细胞坏死的进程。
最新的研究表明:抑制SIRT2的活性在治疗帕金森病方面具有潜在的价值,具体体现在:(1)SIRT2在成年大脑的中枢神经系统高丰度表达并调节相关生理代谢;(2)SIRT2的siRNA和小分子抑制剂AGK2能够挽救α-synulein造成的神经细胞毒性,AGK2也能够在体内剂量依赖性地保护转基因帕金森病果蝇模型的神经细胞减少凋亡;(3)SIRT2通过去乙酰化FOXO3a来提高Bim在RNA和蛋白水平的表达,促使MPTP作用的帕金森病细胞模型的凋亡以及MPTP作用的小鼠模型大脑中的细胞凋亡。但是,敲除SIRT2基因的小鼠大脑中显示出很明显减少黑质纹状体损伤的现象;(4)另外,SIRT2的小分子抑制剂AK-7能够明显减少另一种神经退化性疾病-Huntington疾病转基因小鼠大脑中突变Huntingtin的聚集,并且能够明显提高Huntington病转基因小鼠的行为表现以及延长其存活时间。
现有技术中具有代表性的SIRT2小分子抑制剂包括如下几种:
但是现有技术中已知的SIRT2抑制剂类型还十分有限,鉴于SIRT2小分子抑制剂在治疗帕金森病方面的潜在活性,设计合成出新的SIRT2抑制剂是非常有现实意义的。
发明内容
针对现有技术的不足,本发明的目的在于提供一种8-(吡啶三氮唑)取代香豆素类化合物及其制备方法和应用,尤其提供一种能够抑制SIRT2活性或表达的8-(吡啶三氮唑)取代香豆素类化合物及其制备方法和应用。本发明开发了一类结构新型的8-(吡啶三氮唑)取代香豆素类化合物,且其具有显著的SIRT2抑制活性,并且对SIRT2具有较好的选择性,可用于帕金森病、代谢类疾病、肿瘤等的预防和治疗。
为达到此发明目的,本发明采用以下技术方案:
第一方面,本发明提供一种8-(吡啶三氮唑)取代香豆素类化合物,所述8-(吡啶三氮唑)取代香豆素类化合物的结构如式(I)所示:
其中,A环独立地选自苯基、萘基、5-14元芳杂环基(例如5元芳杂环基、6元芳杂环基、7元芳杂环基、8元芳杂环基、9元芳杂环基、10元芳杂环基、11元芳杂环基、12元芳杂环基、13元芳杂环基、14元芳杂环基);
所述苯基、萘基、5-14元芳杂环基无取代或被1-5个(例如1个、2个、3个、4个、5个)Ra取代;Ra各自独立地选自氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-8烷基氧基、C1-8烷基羰基、C1-8烷基氧羰基、C1-8烷基、C3-8环烷基、苯基;
在所述Ra中,所述C1-8烷基、C3-8环烷基、苯基无取代或被1-5个(例如1个、2个、3个、4个、5个)Rb取代;所述Rb各自独立地选自氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-8烷基羰基。
上述C1-8是指取代基的碳原子数为1个、2个、3个、4个、5个、6个、7个、8个;C3-8是指取代基的碳原子数为3个、4个、5个、6个、7个、8个。
本发明所涉及的8-(吡啶三氮唑)取代香豆素类化合物是一种全新的化合物结构,且其体外SIRT2抑制活性达到50%以上,其中18个化合物的体外SIRT2抑制活性IC50达到微摩尔水平,尤其是其中10个化合物的IC50值达到10-7mol/L水平,其中4个化合物的IC50值达到10-8mol/L水平,显示出良好的SIRT2抑制活性,且对神经瘤细胞具有显著的保护效果。因此可以被广泛用于制备用于治疗和/或预防与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症的药物或制备用于治疗和/或预防帕金森病、代谢性疾病、肿瘤的药物。
优选地,式(I)中,A环独立地选自苯基、萘基、5-14元芳杂环基(例如5元芳杂环基、6元芳杂环基、7元芳杂环基、8元芳杂环基、9元芳杂环基、10元芳杂环基、11元芳杂环基、12元芳杂环基、13元芳杂环基、14元芳杂环基);
所述苯基、萘基、5-14元芳杂环基无取代或被1-5个(例如1个、2个、3个、4个、5个)Ra取代;Ra各自独立地选自氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-6烷基氧基、C1-6烷基羰基、C1-6烷基氧羰基、C1-6烷基、C3-6环烷基、苯基;
在所述Ra中,所述C1-6烷基、C3-6环烷基、苯基无取代或被1-5个(例如1个、2个、3个、4个、5个)Rb取代;所述Rb各自独立地选自氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-6烷基羰基。
上述C1-6是指取代基的碳原子数为1个、2个、3个、4个、5个、6个;C3-6是指取代基的碳原子数为3个、4个、5个、6个。
优选地,所述8-(吡啶三氮唑)取代香豆素类化合物的结构如式(IA)所示:
其中,R1、R2、R3、R4、R5独立选自氢、氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-4烷基氧基、C1-4烷基羰基、C1-4烷基氧羰基、C1-4烷基、苯基。
上述C1-4是指取代基的碳原子数为1个、2个、3个、4个。
优选地,所述8-(吡啶三氮唑)取代香豆素类化合物的结构如式(IB)所示:
其中,R1、R2、R3、R4、R5独立选自氢、氘、卤素、羟基、巯基、氨基、氰基、硝基、甲磺酰基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-4烷基氧基、C1-4烷基羰基、C1-4烷基;X独立选自N或者C。
上述C1-4是指取代基的碳原子数为1个、2个、3个、4个。
进一步优选地,所述8-(吡啶三氮唑)取代香豆素类化合物选自如下所示的结构(分别以结构式表示或以系统命名表示):
第二方面,本发明提供如第一方面所述的8-(吡啶三氮唑)取代香豆素类化合物的立体异构体、其药学上可接受的盐或包含其的药物组合物;
优选地,所述药物组合物还包含药学上可接受的药用辅料,例如载体、稀释剂、赋形剂、填充剂、粘合剂、润湿剂、崩解剂、乳化剂、助溶剂、增溶剂、渗透压调节剂、表面活性剂、包衣材料、着色剂、pH调节剂、抗氧剂、抑菌剂或缓冲剂等。
本发明所涉及的8-(吡啶三氮唑)取代香豆素类化合物的药学上可接受的盐为8-(吡啶三氮唑)取代香豆素类化合物与选自如下的酸形成的盐:盐酸、氢溴酸、对甲苯磺酸、酒石酸、马来酸、乳酸、甲磺酸、硫酸、磷酸、柠檬酸、乙酸或三氟乙酸。优选为盐酸、氢溴酸、对甲苯磺酸或三氟乙酸。
第三方面,本发明提供如第一方面所述的8-(吡啶三氮唑)取代香豆素类化合物的制备方法,所述制备方法包括:
其反应式如下所示:
优选地,所述3-(1-(2-氧代-2H-色烯-8-基)-1H-1,2,3-三唑-4-基)吡啶甲酸的制备方法包括如下步骤:
(1)将8-溴香豆素与NaN3混合,反应,得到8-叠氮基香豆素;
(2)将8-叠氮基香豆素与3-乙炔基吡啶甲酸、碘化亚铜混合,反应,得到3-(1-(2-氧代-2H-色烯-8-基)-1H-1,2,3-三唑-4-基)吡啶甲酸;
其反应式如下所示:
本发明所涉及的8-(吡啶三氮唑)取代香豆素类化合物的制备方法简单易操作,合适工业化生产,具有实用性。
作为本发明的优选技术方案,所述8-(吡啶三氮唑)取代香豆素类化合物的制备方法包括如下步骤:
(1)在室温下向8-溴香豆素的超干DMF溶液中添加NaN3。将反应液在40℃加热。TLC检测反应完全,将反应液冷却至室温,用饱和食盐水猝灭。产物用二氯甲烷萃取三次。合并的有机相用无水硫酸钠干燥,过滤后,蒸除溶剂,硅胶柱纯化即得产物8-叠氮基香豆素。
(2)将8-叠氮基香豆素、3-乙炔基吡啶甲酸、碘化亚铜添加到超干二氯甲烷中,并将该反应在室温下搅拌。TLC检测反应完全后,用硅胶柱纯化即得产物3-(1-(2-氧代-2H-色烯-8-基)-1H-1,2,3-三唑-4-基)吡啶甲酸。
(3)在单口瓶中加入3-(1-(2-氧代-2H-色烯-8-基)-1H-1,2,3-三唑-4-基)吡啶甲酸、缩合剂HATU、各种胺、DIPEA、超干二氯甲烷。室温搅拌。TLC检测反应完全。混合液中加入水,用乙酸乙酯萃取三次,用饱和食盐水洗涤,无水硫酸钠干燥。硅胶柱纯化即得产物。
第四方面,本发明提供一种如第一方面所述的8-(吡啶三氮唑)取代香豆素类化合物或如第二方面所述的8-(吡啶三氮唑)取代香豆素类化合物的立体异构体、其药学上可接受的盐、包含其的药物组合物在制备用于治疗和/或预防与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症的药物中的应用。
优选地,所述与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症包括帕金森病、代谢性疾病或肿瘤。
第五方面,本发明还提供一种如第一方面所述的8-(吡啶三氮唑)取代香豆素类化合物或如第二方面所述的8-(吡啶三氮唑)取代香豆素类化合物的立体异构体、其药学上可接受的盐、包含其的药物组合物在制备SIRT2抑制剂中的应用。
第六方面,本发明还提供一种治疗和/或预防与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症的方法,该方法包括:给有需要的受试者使用治疗和/或预防有效量的如第一方面所述的8-(吡啶三氮唑)取代香豆素类化合物或如第二方面所述的8-(吡啶三氮唑)取代香豆素类化合物的立体异构体、其药学上可接受的盐、包含其的药物组合物。
优选地,所述与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症包括帕金森病、代谢性疾病或肿瘤。
下面对本发明的各个方面和特点作进一步的描述。
本发明使用的各种术语和短语具有本领域技术人员公知的一般含义,即便如此,本发明仍然希望在此对这些术语和短语作更详尽的说明和解释,提及的术语和短语如有与公知含义不一致的,以本发明所表述的含义为准。下面是本发明所用多种术语的定义,这些定义适用于本申请整个说明书中所用的术语,除非在具体情况中另作说明。以下提供本发明化合物各种基团的定义,除另行定义外,它们在说明书和权利要求书中统一使用。
如本发明所提及的,术语“卤”、“卤素”、“卤素原子”、“卤代”等表示氟、氯、溴或碘,特别是表示氟、氯或溴。
如本发明所提及的,术语“烷基”是指具有指定数目碳原子数的烷基,其可以为直链或支链的烷基,例如所述的“C1-8烷基”时,是指碳原子数为1、2、3、4、5、6、7、8的烷基,可以包括C1-8烷基、C1-7烷基、C2-8烷基、C2-7烷基、C2-6烷基、C3-8烷基、C3-7烷基、C3-6烷基等表示的子范围的基团,以及优选的具体基团例如甲基、乙基、正丙基、异丙基、正丁基、仲丁基、叔丁基、戊基、己基、庚基、辛基,进一步优选甲基,异丙基。例如所述的“C1-6烷基氧基”、“C1-6烷基甲酰基”、“C1-6烷基氧甲酰基”或“C1-6烷基”中的“C1-6烷基”,是指碳原子数为1、2、3、4、5、6的烷基,可以包括C1-5烷基、C1-4烷基、C2-6烷基、C2-5烷基、C2-4烷基、C3-6烷基、C3-5烷基、C3-4烷基等表示的子范围的基团,以及优选的具体基团例如甲基、乙基、正丙基、异丙基、正丁基、仲丁基、叔丁基、戊基、己基,进一步优选甲基。例如所述的“C1-4烷基羰基”或“C1-4烷基氧羰基”中的“C1-4烷基”,是指碳原子数为1、2、3、4的烷基,可以包括C1-4烷基、C2-4烷基等表示的子范围的基团,以及优选的具体基团如甲基、乙基、正丙基、异丙基。
如本发明所提及的,术语“环烷基”是指具有指定数目环碳原子数的环状烷基,例如提及的“C3-8环烷基”时,其指碳原子数为3、4、5、6、7、8的环烷基,可以包括C3-7环烷基、C3-4环烷基、C4-6环烷基等表示的子范围的基团,以及优选的具体基团例如环丙基、环丁基、环戊基、环己基、环庚基、环辛基,进一步优选环丙基,环戊基、环己基。例如所述的“C3-6环烷基”,是指碳原子数为3、4、5、6的环烷基,可以包括C3-6环烷基、C3-5环烷基、C4-5环烷基等表示的子范围的基团,以及优选的具体基团例如环丙基、环丁基、环戊基、环己基、环庚基,进一步优选环丙基,环戊基、环己基。
如本发明所提及的,术语“芳杂环基”是指包含1至4个杂原子的杂环芳香族体系,所述的杂原子包括氮、氧和硫的杂原子。如本发明所提及的,“5-14元芳杂环基”是指含有5-14个环原子的杂环芳香族体系。具体实施例包括含有1个碳原子和4个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如四氮唑基;含有2个碳原子和3个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如1,2,3-三氮唑基、1,2,4-三氮唑基、噁二唑基、噻二唑基;含有3个碳原子和2个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如咪唑基、吡唑基、噁唑基、异噁唑基、噻唑基、异噻唑基;含有4个碳原子和1-2个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如吡咯基、呋喃基、噻吩基、哒嗪基、嘧啶基、吡嗪基;含有5个碳原子和1个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如吡啶基,优选吡啶基;含有6个碳原子和3个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如苯并三唑基;含有7个碳原子和2个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如苯并咪唑基、苯并吡唑基;含有8个碳原子和1-2个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如吲哚基、苯并呋喃基、苯并噻吩基、苯并吡嗪基、苯并嘧啶基、苯并哒嗪基;含有9个碳原子和1个选自氮、氧、硫的杂原子的芳基,优选的具体基团例如喹啉基、异喹啉基。
如本发明所提及的,术语“有效量”是指可在受试者中实现治疗和/或预防本发明所述疾病或病症的剂量。
如本发明所提及的,术语“药物组合物”,其还可以是指“组合物”,其可用于在受试者特别是哺乳动物中实现治疗和/或预防本发明所述疾病或病症。
如本发明所提及的,术语“受试者”可以指患者或者其它接受本发明所涉及化合物、药用盐或其药物组合物以治疗和/或预防本发明所述疾病或病症的动物,特别是哺乳动物,例如人、狗、猴、牛、马等。
如本发明所提及的,术语“疾病和/或病症”是指所述受试者的一种身体状态,该身体状态与本发明所述疾病和/或病症有关。例如,本发明所述疾病和/或病症既可以指一种身体状态,例如呈帕金森病症的身体状态,也可以指一种疾病状态,例如表现为帕金森病等疾病状态。在本文中对于身体状态和疾病状态不作区分,或者二者可以相互指代,例如“帕金森病”与“帕金森症”可以互换使用。
如本发明所提及的,术语“药学上可接受的”例如在描述“药学上可接受的盐”时,表示该盐不但是受试者生理学上可接受,而且还可指在药学上有使用价值的合成物质,例如在为进行手性拆分时所形成的作为中间体的盐,虽然这种中间体的盐并不能直接给予受试者,但该盐可在为获得本发明终产物中起作用。
本发明再一方面还涉及以本发明化合物作为活性成份的药物组合物。该药物组合物可根据本领域公知的方法制备。可通过将本发明化合物与一种或多种药学上可接受的固体或液体赋形剂和/或辅剂结合,制成适于人或动物使用的任何剂型。本发明化合物在其药物组合物中的含量通常为0.1-95重量%。
本发明化合物或含有它的药物组合物可以单位剂量形式给药,给药途径可为肠道或非肠道,如口服、静脉注射、肌肉注射、皮下注射、鼻腔、口腔粘膜、眼、肺和呼吸道、皮肤、阴道、直肠等。
给药剂型可以是液体剂型、固体剂型或半固体剂型。液体剂型可以是溶液剂(包括真溶液和胶体溶液)、乳剂(包括o/w型、w/o型和复乳)、混悬剂、注射剂(包括水针剂、粉针剂和输液)、滴眼剂、滴鼻剂、洗剂和搽剂等;固体剂型可以是片剂(包括普通片、肠溶片、含片、分散片、咀嚼片、泡腾片、口腔崩解片)、胶囊剂(包括硬胶囊、软胶囊、肠溶胶囊)、颗粒剂、散剂、微丸、滴丸、栓剂、膜剂、贴片、气(粉)雾剂、喷雾剂等;半固体剂型可以是软膏剂、凝胶剂、糊剂等。
本发明化合物可以制成普通制剂、也可制成是缓释制剂、控释制剂、靶向制剂及各种微粒给药系统。
为了将本发明化合物制成片剂,可以广泛使用本领域公知的各种赋形剂,包括稀释剂、黏合剂、润湿剂、崩解剂、润滑剂、助溶剂。稀释剂可以是淀粉、糊精、蔗糖、葡萄糖、乳糖、甘露醇、山梨醇、木糖醇、微晶纤维素、硫酸钙、磷酸氢钙、碳酸钙等;湿润剂可以是水、乙醇、异丙醇等;粘合剂可以是淀粉浆、糊精、糖浆、蜂蜜、葡萄糖溶液、微晶纤维素、阿拉伯胶浆、明胶浆、羧甲基纤维素钠、甲基纤维素、羟丙基甲基纤维素、乙基纤维素、丙烯酸树脂、卡波姆、聚乙烯吡咯烷酮、聚乙二醇等;崩解剂可以是干淀粉、微晶纤维素、低取代羟丙基纤维素、交联聚乙烯吡咯烷酮、交联羧甲基纤维素钠、羧甲基淀粉钠、碳酸氢钠与枸橼酸、聚氧乙烯山梨糖醇脂肪酸酯、十二烷基磺酸钠等;润滑剂和助溶剂可以是滑石粉、二氧化硅、硬脂酸盐、酒石酸、液体石蜡、聚乙二醇等。
还可以将片剂进一步制成包衣片,例如糖包衣片、薄膜包衣片、肠溶包衣片,或双层片和多层片。
为了将给药单元制成胶囊剂,可以将有效成分本发明化合物与稀释剂、助溶剂混合,将混合物直接置于硬胶囊或软胶囊中。也可将有效成分本发明化合物先与稀释剂、黏合剂、崩解剂制成颗粒或微丸,再置于硬胶囊或软胶囊中。用于制备本发明化合物片剂的各稀释剂、黏合剂、润湿剂、崩解剂、助溶剂品种也可用于制备本发明化合物的胶囊剂。
为将本发明化合物制成注射剂,可以用水、乙醇、异丙醇、丙二醇或它们的混合物作溶剂并加入适量本领域常用的增溶剂、助溶剂、pH调节剂、渗透压调节剂。增溶剂或助溶剂可以是泊洛沙姆、卵磷脂、羟丙基-β-环糊精等;pH调节剂可以是磷酸盐、醋酸盐、盐酸、氢氧化钠等;渗透压调节剂可以是氯化钠、甘露醇、葡萄糖、磷酸盐、醋酸盐等。如制备冻干粉针剂,还可加入甘露醇、葡萄糖等作为支撑剂。
此外,如需要,也可以向药物制剂中添加着色剂、防腐剂、香料、矫味剂或其它添加剂。
为达到用药目的,增强治疗效果,本发明的药物或药物组合物可用任何公知的给药方法给药。
本发明化合物药物组合物的给药剂量依照所要预防或治疗疾病的性质和严重程度,患者或动物的个体情况,给药途径和剂型等可以有大范围的变化。一般来讲,本发明所涉及化合物其每天的合适剂量范围为0.001-150mg/kg体重,优选为0.1-100mg/kg体重,更优选为1-60mg/kg体重,最优选为2-30mg/kg体重。上述剂量可以一个剂量单位或分成几个剂量单位给药,这取决于医生的临床经验以及包括运用其它治疗手段的给药方案。
本发明的化合物或组合物可单独服用,或与其他治疗药物或对症药物合并使用。当本发明的化合物与其它治疗药物存在协同作用时,应根据实际情况调整它的剂量。
相对于现有技术,本发明具有以下有益效果:
本发明所涉及的8-(吡啶三氮唑)取代香豆素类化合物是一种全新的化合物结构,且其体外SIRT2抑制活性达到50%以上,其中18个化合物的体外SIRT2抑制活性IC50达到微摩尔水平,尤其是其中10个化合物的IC50值达到10-7mol/L水平,其中4个化合物的IC50值达到10-8mol/L水平,显示出良好的SIRT2抑制活性,且对神经瘤细胞具有显著的保护效果。因此可以被广泛用于制备用于治疗和/或预防与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症的药物或制备用于治疗和/或预防帕金森病、代谢性疾病、肿瘤的药物。
附图说明
图1是试验例3中本发明所涉及的8-(吡啶三氮唑)取代香豆素类化合物对SH-SY5Y细胞损伤的保护作用的结果统计图。
具体实施方式
下面通过具体实施方式来进一步说明本发明的技术方案。本领域技术人员应该明了,所述实施例仅仅是帮助理解本发明,不应视为对本发明的具体限制。
对于以下全部实施例或制备例,可以使用本领域技术人员已知的标准操作和纯化方法。除非另有说明,所有温度以℃(摄氏度)表示,化合物的结构是通过核磁共振谱(NMR)和/或质谱(MS)来确定。
对于以下全部实施例或制备例,化合物的结构是通过核磁共振氢谱(1H NMR)或质谱(MS)来确定的。核磁共振氢谱位移(δ)以百万分之一(ppm)的单位给出。核磁共振谱用Mercury-300或Mercury-400型核磁共振仪测定,氘代氯仿(CDCl3)或氘代二甲基亚砜(DMSO-d6)作溶剂,四甲基硅烷(TMS)或3-(三甲基硅基)氘代丙酸钠(TSM)为内标。
电子天平采用日本Yanaco LY-300型电子天平。
柱层析使用200~300目或300~400目硅胶为载体。
无水溶剂均通过标准方法处理。其它试剂均为市售分析纯。
其中,
HATU为2-(7-Azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluroniumhexafluor-ophosphat,即2-(7-氮杂苯并三氮唑)-N,N,N',N'-四甲基脲六氟磷酸酯。
DIPEA为N,N-diisomromylethylamine,即N,N-二异丙基乙胺。
DMF为N,N-dimethylformamide,即N,N-二甲基甲酰胺。
下述制备例和实施例中所涉及的原料的来源如下:
8-溴香豆素购自于上海阿拉丁生化科技股份有限公司,CAS:33491-30-4;
3-乙炔基吡啶甲酸购自于上海瀚鸿科技股份有限公司;
分别购自于上海麦克林生化科技有限公司、Sigma-Aldrich西格玛奥德里奇(上海)贸易有限公司、北京百灵威科技有限公司、上海迈瑞尔化学技术有限公司、阿法埃莎(中国)化学有限公司、北京偶合科技有限公司、上海阿拉丁生化科技股份有限公司、北京索莱宝科技有限公司、北京伊诺凯科技有限公司。
制备例1
本制备例制备如下式所示的中间体3,合成路线为:
(1)在20℃下向8-溴香豆素(5.00g,22.33mmol)的超干DMF溶液(15mL)中添加NaN3(1.74g,26.80mmol)。将反应液在40℃加热14小时。TLC检测反应完全,将反应液冷却至20℃,用饱和食盐水猝灭。产物用二氯甲烷(20mL×3)萃取三次。合并的有机相用无水硫酸钠干燥,过滤后,蒸除溶剂,硅胶柱纯化即得产物8-叠氮基香豆素(1.42g,收率37%)。
(2)将8-叠氮基香豆素(1.30g,6.95mmol)、3-乙炔基吡啶甲酸(1.02g,6.95mmol)和碘化亚铜(0.13g,0.70mmol)添加到超干二氯甲烷(15mL)中,并将该反应在20℃下搅拌25分钟。TLC检测反应完全后,用硅胶柱纯化即得产物3-(1-(2-氧代-2H-色烯-8-基)-1H-1,2,3-三唑-4-基)吡啶甲酸(2.04g,收率88%)。
实施例1
本实施例制备化合物1:N-(2-(4-氯苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
在单口瓶中加入3-(1-(2-氧代-2H-色烯-8-基)-1H-1,2,3-三唑-4-基)吡啶甲酸(1.67g,5.00mmol),缩合剂HATU(2.28g,6.00mmol),(5.00mmol),DIPEA(1.74mL,10.00mmol),超干二氯甲烷(15mL)。20℃下搅拌5小时。TLC检测反应完全。混合液中加入水,用乙酸乙酯(15mL×3)萃取三次,用饱和食盐水洗涤,无水硫酸钠干燥。硅胶柱纯化即得白色固体0.32g,收率14%。对产物进行如下表征:
1H NMR(400MHz,CDCl3):δ8.69(d,J=5.2Hz,1H),8.44(d,J=4.5Hz,1H),8.10(s,1H),7.65-7.93(m,4H),7.30-7.50(m,5H),6.25(m,1H),4.11(s,2H).
HR-MS(ESI):[M+H]+C24H17ClN5O3计算值458.1020,实测值458.1055.
实施例2
本实施例制备化合物2:N-(2-(3-氯苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.67(d,J=5.2Hz,1H),8.54(d,J=4.3Hz,1H),8.08(s,1H),7.71-7.97(m,4H),7.30-7.48(m,4H),7.11(m,1H),6.25(m,1H),4.14(s,2H).
HR-MS(ESI):[M+H]+C24H17ClN5O3计算值458.1020,实测值458.1035.
实施例3
本实施例制备化合物3:N-(2-(2-氯苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.67(d,J=5.2Hz,1H),8.47(d,J=4.3Hz,1H),8.10(s,1H),7.67-7.95(m,5H),7.20-7.41(m,3H),7.17(m,1H),6.25(m,1H),4.23(s,2H).
HR-MS(ESI):[M+H]+C24H17ClN5O3计算值458.1020,实测值458.1041.
实施例4
本实施例制备化合物4:N-(2-(4-甲基苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.69(d,J=5.2Hz,1H),8.44(d,J=4.5Hz,1H),8.10(s,1H),7.65-7.93(m,4H),7.42(m,1H),7.11(m,4H),6.25(m,1H),4.11(s,2H),2.34(s,3H).
HR-MS(ESI):[M+H]+C25H20N5O3计算值438.1566,实测值438.1578.
实施例5
本实施例制备化合物5:N-(2-(3-硝基苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.69(d,J=5.2Hz,1H),8.44(d,J=4.5Hz,1H),8.08-8.10(m,3H),7.65-7.97(m,6H),7.42(m,1H),6.25(m,1H),4.11(s,2H).
HR-MS(ESI):[M+H]+C24H17N6O5计算值469.1260,实测值469.1276.
实施例6
本实施例制备化合物6:N-(2-(2-氰基苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.67(d,J=5.2Hz,1H),8.42(d,J=4.5Hz,1H),8.08(m,1H),7.65-7.97(m,4H),7.42-7.60(m,5H),6.25(m,1H),4.23(s,2H).
HR-MS(ESI):[M+H]+C25H17N6O3计算值449.1362,实测值449.1377.
实施例7
本实施例制备化合物7:N-(2-(4-氟苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.69(d,J=5.0Hz,1H),8.44(d,J=4.4Hz,1H),8.10(s,1H),7.65-7.93(m,4H),7.34-7.56(m,5H),6.25(m,1H),4.11(s,2H).
HR-MS(ESI):[M+H]+C24H17FN5O3计算值442.1315,实测值442.1334.
实施例8
本实施例制备化合物8:N-(2-(4-甲磺酰苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.67(d,J=5.0Hz,1H),8.44(d,J=4.4Hz,1H),8.10(s,1H),7.51-7.93(m,8H),7.42(m,1H),6.25(m,1H),4.11(s,2H),3.32(s,3H).
HR-MS(ESI):[M+H]+C25H20N5O5S计算值502.1185,实测值502.1197.
实施例9
本实施例制备化合物9:N-(2-(4-三氟甲基苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.69(d,J=5.0Hz,1H),8.44(d,J=4.4Hz,1H),8.09(s,1H),7.65-7.97(m,4H),7.50(d,J=5.5Hz,2H),7.14(d,J=5.7Hz,2H),6.25(m,1H),4.13(s,2H).
HR-MS(ESI):[M+H]+C25H17F3N5O3计算值492.1283,实测值492.1299.
实施例10
本实施例制备化合物10:N-(2-(4-苯基苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.69(d,J=5.0Hz,1H),8.44(d,J=4.4Hz,1H),8.09(s,1H),7.64-7.98(m,4H),7.51-7.53(m,4H),7.29-7.44(m,6H),6.25(m,1H),4.13(s,2H).
HR-MS(ESI):[M+H]+C30H22N5O3计算值500.1723,实测值500.1747.
实施例11
本实施例制备化合物11:N-(2-(4-羟基苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.68(d,J=5.0Hz,1H),8.42(d,J=4.4Hz,1H),8.09(s,1H),7.65-7.97(m,4H),7.42(m,1H),7.18(m,2H),6.78(m,2H),6.25(m,1H),4.13(s,2H).
HR-MS(ESI):[M+H]+C24H18N5O4计算值440.1359,实测值440.1377.
实施例12
本实施例制备化合物12:N-(2-(4-甲氧苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.68(d,J=5.0Hz,1H),8.44(d,J=4.4Hz,1H),8.09(s,1H),7.61-7.95(m,4H),7.42(m,1H),7.25(m,2H),6.87(m,2H),6.25(m,1H),4.11(s,2H),3.83(s,3H).
HR-MS(ESI):[M+H]+C25H20N5O4计算值454.1515,实测值454.1567.
实施例13
本实施例制备化合物13:N-(2-(3,4-二氟苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.68(d,J=5.0Hz,1H),8.44(d,J=4.4Hz,1H),8.10(s,1H),7.67-7.97(m,4H),7.42(m,1H),6.89-7.12(m,3H),6.25(m,1H),4.11(s,2H).
HR-MS(ESI):[M+H]+C24H16F2N5O3计算值460.1221,实测值460.1253.
实施例14
本实施例制备化合物14:N-(2-(3-溴-4-氯苄)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.68(d,J=5.2Hz,1H),8.44(d,J=4.2Hz,1H),8.09(s,1H),7.67-7.97(m,4H),7.26-7.42(m,4H),6.25(m,1H),4.11(s,2H).
HR-MS(ESI):[M+H]+C24H16BrClN5O3计算值536.0125,实测值536.0147.
实施例15
本实施例制备化合物15:N-(2-((7-溴奈-1-基)甲基)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.68(d,J=5.0Hz,1H),8.44(d,J=4.2Hz,1H),8.28(s,1H),8.08(s,1H),7.67-7.97(m,7H),7.42-7.47(m,2H),7.07(m,1H),6.25(m,1H),4.67(s,2H).
HR-MS(ESI):[M+H]+C28H19BrN5O3计算值552.0671,实测值552.0698.
实施例16
本实施例制备化合物16:N-(2-((3-氯萘-1-基)甲基)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.68(d,J=5.0Hz,1H),8.44(d,J=4.0Hz,1H),8.18(s,1H),8.05-8.08(m,2H),7.67-7.97(m,4H),7.42-7.54(m,4H),7.11(m,1H),6.25(m,1H),4.67(s,2H).
HR-MS(ESI):[M+H]+C28H19ClN5O3计算值508.1176,实测值508.1192.
实施例17
本实施例制备化合物17:N-(2-((喹啉-5-基)甲基)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.40-8.80(m,4H),8.08(m,1H),7.67-7.97(m,6H),7.42-7.57(m,3H),6.25(m,1H),4.23(s,2H).
HR-MS(ESI):[M+H]+C27H19N6O3计算值475.1519,实测值475.1542.
实施例18
本实施例制备化合物18:N-(2-((7-溴-喹啉-5-基)甲基)-3-(1-(2-氧代-2H-色原烯-8-基)-1H-1,2,3-三氮唑-4-基)吡啶酰胺,其结构如下所示:
1H NMR(400MHz,CDCl3):δ8.45-8.92(m,4H),8.08(m,1H),7.56-7.97(m,7H),7.42(m,1H),6.25(m,1H),4.23(s,2H).
HR-MS(ESI):[M+H]+C27H18BrN6O3计算值553.0624,实测值553.0657.
试验例1
SIRT2抑制剂的体外活性筛选:
人SIRT2基因的全长表达序列ORF为1170bp(Accession No.:NM_012237),所表达的SIRT2蛋白大小为43KDa。SIRT2重组蛋白的表达纯化步骤如下:SIRT2基因被克隆到表达载体pET-15b(引物如下Forward:5’-TAATACGACTCACTATAGGG-3’;backward:5’-TTCACTTCTGAGTTCGGCATG-3’),表达的SIRT2蛋白在N末端含有用于纯化的标签His6。质粒被转化到E.coli BL2(DE3),经过1mM IPTG诱导,在18℃表达6小时。离心收集诱导的大肠杆菌细胞,冻于-20℃。细菌沉淀重悬于15mL的细胞裂解液(50mM Tris-HCl pH 8.0,300mMNaCl),细菌样品采用超声破碎10min,之后在4℃离心(12000×g,20min)去除沉淀。重组表达的可溶性SIRT2蛋白存在于上清中。将上清通过Ni2+NTA-agarose matrix柱(Qiagen)进行纯化。在纯化的过程中,首先用上样液(50mM Tris-HCl pH 8.0,300mM NaCl)洗掉没有结合的蛋白,之后逐渐提高咪唑的浓度(0-200mM)洗去非特异性结合的蛋白,最后得到纯化的重组SIRT2蛋白。采用PD-10柱子去除咪唑,并用Bradford方法测定纯化的SIRT2蛋白浓度。重组SIRT2蛋白贮存于保存液中(50mM Tris-HCl,pH 8.0,265mM NaCl,0.2mM DTT,and 10%glycerol),放置于-20℃。
根据文献的报道,建立了SIRT2酶活性测定方法。首先合成SIRT2的作用底物肽段Ac-Gln-Pro-Lys-[Lys-(Ac)]-AMC作为酶活性测定方法中的底物。所连接的荧光标签为AMC(7-Amino-4-methylcoumarin)。整个测定过程包括两个步骤:催化反应在60μL的反应液中进行(25mM Tris-HCl,pH 8.0,137mM NaCl,2.7mM KCl,1mM MgCl2 and 1mg/ml BSA),加入500μM NAD+、50μM底物肽段、1.0μg的SIRT2和不同浓度的化合物1-18。反应放置37℃2个小时。在这个反应中,小分子肽段上Lysine残基的乙酰基团被不同程度地去除。之后向反应溶液中加入60μL的样品处理液(50mM Tris-HCl,pH 8.0,100mM NaCl,Trypsin和4mMnicotinamide)并混合,放置于37℃20分钟。将酶标仪设置为激发光355nm,吸收光为460nm,测定吸收强度。试验中的每个化合物每个浓度都有2个平行试验,并设置合理的对照,实验结果采用处理软件GraphPad Prism计算每个抑制剂的抑制活性IC50。结果如表1所示(其中AGK为阳性对照组):
表1
由表1数据可知:受试的18个化合物的体外SIRT2抑制活性IC50均达到微摩尔水平,尤其是其中10个化合物的IC50值达到了10-7mol/L水平,其中4个化合物的IC50值达到了10- 8mol/L水平,显示出本发明所涉及的8-(吡啶三氮唑)取代香豆素类化合物具有良好的SIRT2抑制活性。
试验例2
化合物对神经瘤细胞SH-SY5Y的细胞毒性测定:
本试验例测定化合物对神经瘤细胞SH-SY5Y的细胞毒性,从而用于确定下一步的帕金森细胞模型保护试验的剂量。对于细胞毒性的测定,具体的实验步骤如下:将培养的神经瘤细胞SH-SY5Y种植于96孔的细胞培养板,每孔大约6000细胞。经过过夜培养,换取新的培养液,并在每孔中加入不同浓度的化合物1-18(0.01,0.05,0.1,0.5,1,5,10,20,50,100,200μM),并设置不同的对照样品。细胞在37℃下继续培养48小时。在每孔中加入10μL染料(Invitrogen)继续放置37℃培养大约2个小时,可以观察到染色液颜色变化,在酶标仪下读取吸收值的变化(Ex:530nm;Em:590nm)。试验中化合物的每个浓度都有2个平行试验。实验结果采用数据处理软件GraphPad Prism计算每个化合物的细胞毒性CC50。结果如表2所示(其中Taxol为阳性对照组):
表2
由表2数据可知:受试的18个化合物对SH-SY5Y的细胞毒性CC50均大于20μM,即本发明所涉及的8-(吡啶三氮唑)取代香豆素类化合物对SH-SY5Y细胞并无明显抑制活性。
试验例3
筛选对帕金森病细胞模型具有保护活性的化合物:
对于帕金森病细胞模型保护作用的筛选试验,采用目前普遍认可的神经毒剂MPP+(5mM)作用于神经瘤细胞SH-SY5Y来构建帕金森病细胞模型。这种神经毒剂作用于SH-SY5Y细胞从而影响α-synuclein在细胞内的不正常积聚,并造成类似帕金森病的神经毒性。具体的实验方法如下:将大约20000的SH-SY5Y细胞种植于96孔细胞板中,过夜培养。对照试验control采用不加神经毒剂,其他各组每孔中加入神经毒剂MPP+(5mM),MPP+组为不加保护化合物,保护试验的培养孔中同时分别加入化合物1-18(10μM)(其中AGK为阳性对照),继续培养48小时,测定帕金森病细胞模型的细胞活性,从而评估他们对于帕金森细胞模型的保护作用。对于试验结果的数据分析采用GraphPad Prism。结果如图1所示。
由图1可知:受试的18个化合物均能够在一定程度上保护MPP+神经毒剂对于SH-SY5Y细胞的损伤,表明本发明所涉及的8-(吡啶三氮唑)取代香豆素类化合物具有对神经瘤细胞的保护效果;并且其中化合物1,2,9,13,14对于神经瘤细胞的保护效果更为明显。
申请人声明,本发明通过上述实施例来说明本发明的一种8-(吡啶三氮唑)取代香豆素类化合物及其制备方法和应用,但本发明并不局限于上述实施例,即不意味着本发明必须依赖上述实施例才能实施。所属技术领域的技术人员应该明了,对本发明的任何改进,对本发明产品各原料的等效替换及辅助成分的添加、具体方式的选择等,均落在本发明的保护范围和公开范围之内。
以上详细描述了本发明的优选实施方式,但是,本发明并不限于上述实施方式中的具体细节,在本发明的技术构思范围内,可以对本发明的技术方案进行多种简单变型,这些简单变型均属于本发明的保护范围。
另外需要说明的是,在上述具体实施方式中所描述的各个具体技术特征,在不矛盾的情况下,可以通过任何合适的方式进行组合,为了避免不必要的重复,本发明对各种可能的组合方式不再另行说明。
Claims (10)
1.一种8-(吡啶三氮唑)取代香豆素类化合物,其特征在于,所述8-(吡啶三氮唑)取代香豆素类化合物的结构如式(I)所示:
其中,A环独立地选自苯基、萘基、5-14元芳杂环基;
所述苯基、萘基、5-14元芳杂环基无取代或被1-5个Ra取代;Ra各自独立地选自氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-8烷基氧基、C1-8烷基羰基、C1-8烷基氧羰基、C1-8烷基、C3-8环烷基、苯基;
在所述Ra中,所述C1-8烷基、C3-8环烷基、苯基无取代或被1-5个Rb取代;所述Rb各自独立地选自氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-8烷基羰基。
2.如权利要求1所述的8-(吡啶三氮唑)取代香豆素类化合物,其特征在于,式(I)中,A环独立地选自苯基、萘基、5-14元芳杂环基;
所述苯基、萘基、5-14元芳杂环基无取代或被1-5个Ra取代;Ra各自独立地选自氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-6烷基氧基、C1-6烷基羰基、C1-6烷基氧羰基、C1-6烷基、C3-6环烷基、苯基;
在所述Ra中,所述C1-6烷基、C3-6环烷基、苯基无取代或被1-5个Rb取代;所述Rb各自独立地选自氘、卤素、羟基、巯基、氨基、氰基、硝基、叠氮基、甲磺酰基、异丙磺酰基、苯磺酰基、氨基磺酰基、甲磺酸酯基、异丙磺酸酯基、苯磺酸酯基、三氟甲基、三氟甲基氧基、甲酰氨基、C1-6烷基羰基。
6.如权利要求1-5中任一项所述的8-(吡啶三氮唑)取代香豆素类化合物的立体异构体、其药学上可接受的盐或包含其的药物组合物;
优选地,所述药物组合物还包含药学上可接受的药用辅料。
9.如权利要求1-5中任一项所述的8-(吡啶三氮唑)取代香豆素类化合物或如权利要求6所述的8-(吡啶三氮唑)取代香豆素类化合物的立体异构体、其药学上可接受的盐、包含其的药物组合物在制备用于治疗和/或预防与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症的药物中的应用。
10.如权利要求9所述的应用,其特征在于,所述与SIRT2活性过高或者与SIRT2过度表达有关的疾病或病症包括帕金森病、代谢性疾病或肿瘤。
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