CN107033087B - 1h-吲唑-4-胺类化合物及其作为ido抑制剂的用途 - Google Patents
1h-吲唑-4-胺类化合物及其作为ido抑制剂的用途 Download PDFInfo
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- CN107033087B CN107033087B CN201610081017.3A CN201610081017A CN107033087B CN 107033087 B CN107033087 B CN 107033087B CN 201610081017 A CN201610081017 A CN 201610081017A CN 107033087 B CN107033087 B CN 107033087B
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- 239000003112 inhibitor Substances 0.000 title claims abstract description 12
- MDELYEBAXHZXLZ-UHFFFAOYSA-N 1h-indazol-4-amine Chemical class NC1=CC=CC2=C1C=NN2 MDELYEBAXHZXLZ-UHFFFAOYSA-N 0.000 title description 3
- 150000001875 compounds Chemical class 0.000 claims abstract description 98
- 238000002360 preparation method Methods 0.000 claims abstract description 25
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- 206010028980 Neoplasm Diseases 0.000 claims abstract description 10
- QIVBCDIJIAJPQS-UHFFFAOYSA-N Tryptophan Natural products C1=CC=C2C(CC(N)C(O)=O)=CNC2=C1 QIVBCDIJIAJPQS-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000005934 immune activation Effects 0.000 claims abstract description 8
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- 208000030159 metabolic disease Diseases 0.000 claims abstract description 6
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- -1 1H-indazole-4-amine compound Chemical class 0.000 abstract description 7
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- RGSIWCOYONWAJH-UHFFFAOYSA-N 2,5-dimethyl-3-nitroaniline Chemical compound CC1=CC(N)=C(C)C([N+]([O-])=O)=C1 RGSIWCOYONWAJH-UHFFFAOYSA-N 0.000 description 5
- DLKUQAHLXGZFPM-UHFFFAOYSA-N 6-methyl-4-nitro-1h-indazole Chemical compound CC1=CC([N+]([O-])=O)=C2C=NNC2=C1 DLKUQAHLXGZFPM-UHFFFAOYSA-N 0.000 description 5
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- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 5
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- YEDUAINPPJYDJZ-UHFFFAOYSA-N 2-hydroxybenzothiazole Chemical compound C1=CC=C2SC(O)=NC2=C1 YEDUAINPPJYDJZ-UHFFFAOYSA-N 0.000 description 4
- NMEMXQPAMKMVJY-UHFFFAOYSA-N 6-bromo-N-[(2-nitrophenyl)methyl]-1H-indazol-4-amine Chemical compound BrC=1C=C(C=2C=NNC=2C=1)NCC1=C(C=CC=C1)[N+](=O)[O-] NMEMXQPAMKMVJY-UHFFFAOYSA-N 0.000 description 4
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/54—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings condensed with carbocyclic rings or ring systems
- C07D231/56—Benzopyrazoles; Hydrogenated benzopyrazoles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
本发明公开了一种1H‑吲唑‑4‑胺类化合物,还公开了所述化合物的制备方法和作为IDO抑制剂的用途。本发明的化合物可以用于预防和/或治疗多种疾病,如阿尔茨海默病、白内障、细胞免疫激活相关的感染、自身免疫性疾病、艾滋病、癌症、抑郁症或色氨酸代谢异常等。
Description
技术领域
本发明涉及1H-吲唑-4-胺类化合物,还涉及其制备方法和作为IDO抑制剂的用途。
背景技术
吲哚胺2,3-双加氧酶(Indoleamine 2,3-dioxygenase,IDO)是催化色氨酸等吲哚胺类分子中吲哚环氧化裂解,使其按犬尿酸途径分解代谢的限速酶。
IDO在肿瘤免疫豁免及肿瘤发生过程中起着重要作用。正常情况下,IDO在体内呈低水平表达,而大多数肿瘤细胞则会组成的高表达IDO,将L-色氨酸转化为N-甲酰犬尿氨酸,降低了细胞微环境中的色氨酸浓度,使得色氨酸依赖的T细胞合成停滞于G1期,T细胞增殖受到抑制,从而抑制了机体免疫系统对肿瘤组织的杀伤作用。同时,IDO作用下色氨酸的代谢产物存在细胞毒性,可对T细胞产生直接溶解作用。
因此,抑制IDO的活性可以有效地阻止肿瘤细胞周围色氨酸的降解,促进T细胞的增殖,从而增强机体对肿瘤细胞的攻击能力。并且,IDO抑制剂还可以与化疗药物合用,降低肿瘤细胞的耐药性,从而增强常规细胞毒疗法的抗肿瘤活性。同时服用IDO抑制剂也可提高癌症病人的治疗性疫苗的疗效。
除了在肿瘤细胞耐药性方面发挥着重要作用,IDO还与多种与细胞免疫激活相关的疾病的发病机制密切相关。IDO已被证实是与细胞免疫激活相关的感染、恶性肿瘤、自身免疫性疾病、艾滋病等重大疾病的靶标。同时,抑制IDO还是对于患有神经系统疾病如抑郁症,阿尔茨海默病的病人的重要治疗策略。因此,IDO抑制剂具有广阔的临床应用前景。
发明内容
为解决上述问题,本发明主要提供了一类新型的IDO抑制剂类药物,它们均1H-吲唑-4-胺类化合物。
本发明提供了一种化合物或其药学上可接受的盐或其溶剂合物,所述化合物的结构如式(Ⅰ)所示:
其中,
R1选自H、X、-CX3、-CHX2、-CH2X、-(CH2)aCH3;
R2选自-(CH2)b-R3、-CH2NHR3、-CH2CONH-R3、-CH(CH2OH)R3或-CH2CH(OH)R3,
R3选自取代的或非取代的芳基、环烷基或杂环基,所述取代的芳基、环烷基或杂环基分别独立地被一个或多个选自-(CH2)cCOOH、-(CH2)dCOOR4、X、-(CH2)cOH、-(CH2)cNH2、硝基、C1~C6烷基的取代基所取代;
R4选自甲基或乙基;
X表示F、Cl、Br或I,a=0或1,b=0或1,c=0或1,d=0或1。
所述C1~C6的烷基是指具有1~6个碳原子的直链或支链的烷基,例如甲基、乙基、丙基、异丙基、丁基、异丁基、叔丁基、仲丁基、戊基、己基等等。
进一步地,所述R1选自H、Br、-CF3、-CH3或-CH2CH3。
更进一步地,所述R1选自Br。
进一步地,所述化合物的结构如式(II)、式(III)、式(IV)、式(V)、式(Ⅵ)或式(Ⅶ)所示:
进一步地,所述环烷基为环己基;所述取代的环烷基为被一个羟基所取代的环烷基。
进一步地,所述杂环基为四氢吡喃基。
进一步地,所述取代的芳基选自被一个-(CH2)cCOOH、氯、氨基、羟基、硝基或甲基所取代的苯基。
进一步地,所述R3选自下述基团之一:
进一步地,所述化合物选自如下化合物之一:
本发明还提供了一种制备所述式(Ⅱ)化合物或其制备中间体的方法,包括下述步骤:
以SM和S2所示化合物为原料,在还原剂的作用下反应制备得到式(Ⅱ)化合物或其制备中间体。
在具体的实施方式中,该反应可在酸性催化剂的存在下进行。
还原剂可选自DHP、NaBH4或NaBH3(CN),最优选DHP;酸性催化剂可用TFA、甲酸、乙酸或联萘磷酸,最优选TFA;溶剂为CH2Cl2、MeOH或DMF,最优选CH2Cl2。
在本发明提供的制备方法中,所述制备中间体指的是目标化合物前一步的合成中间体。
例如,当某个化合物R3选自-(CH2)dCOOR4时,其可以本身既作为药物使用,也可以作为另一个R3选自-(CH2)dCOOR4化合物的制备中间体。在本发明具体的实施方式中,化合物1m可以作为化合物1l的制备中间体,化合物1o可以作为化合物1n的制备中间体。化合物1l和1n可以分别以化合物1m和1o的制备中间体,再进一步通过本领域常规的酯水解技术手段,酯水解反应制备得到。
又例如,当R3选自硝基时,其可以本身既作为药物使用,也可以作为另一个R3选自-NH2化合物的制备中间体。在本发明具体的实施例中,化合物1p可以作为化合物1q的制备中间体,1q通过对1p上的硝基还原反应制备得到。
本发明还提供了一种制备所述式(Ⅲ)化合物或其制备中间体的方法,包括下述步骤:
以SM和S2所示化合物为原料,缩合反应制备得到式(Ⅲ)化合物或其制备中间体。合成的缩合剂可用EDCI或DCC,最优为EDCI;碱可用HOBT或HATU,最优为HOBT。
本发明还提供了一种制备所述式(Ⅳ)化合物或其制备中间体的方法,包括下述步骤:
(1)
以S4a所示化合物和二(三氯甲基)碳酸酯为原料,反应制备得到S4b所示化合物;
(2)
以S4b和SM所示化合物为原料,反应制备得到式(Ⅳ)化合物或其制备中间体。
本发明还提供了一种制备所述式(Ⅴ)、式(Ⅵ)化合物,或其制备中间体的方法,包括下述步骤:
以S5和SM所示化合物为原料,反应制备得到式(Ⅴ)或式(Ⅵ)化合物,或其制备中间体。
在具体的实施方式中,合成反应的pH值可在7-10之间,最优选的pH值为7。反应温度可在20-80℃,最优选80℃。溶剂可选自EtOH、H2O、DMF、MeOH、THF、CH2Cl2、EtOAc或二氧六环中的任一种或多种,最优选EtOH和H2O的混合溶液。
本发明还提供了一种制备所述式(Ⅶ)化合物或其制备中间体的方法,包括下述步骤:
(1)
以SM所示化合物和溴乙酸乙酯为原料,反应制备得到S7a所示化合物;
该反应具体的实施方式中,可在碱的存在下进行。
碱可选自K2CO3、NaH、NaOH或KOH,最优选K2CO3;溶剂可选自CH2Cl2、MeOH,EtOH、THF、CH3COCH3、EtOAc或DMF,最优选DMF。
(2)
将S7a所示化合物水解,反应制备得到S7b所示化合物;
(3)
以S7b和S7c所示化合物为原料,缩合反应制备得到(Ⅶ)所示化合物或其制备中间体。
本发明还提供了所述化合物、或其药学上可接受的盐、或其前药、或其溶剂合物在制备IDO抑制剂类药物上的用途。
进一步地,所述药物是预防和/或治疗阿尔茨海默病、白内障、细胞免疫激活相关的感染、自身免疫性疾病、艾滋病、癌症、抑郁症或色氨酸代谢异常的药物。
本发明还提供了一种药物组合物,它是以所述的化合物或其药学上可接受的盐为活性成分,加上药学上可接受的辅料制备而成的制剂。
其中,所述组合物是治疗或预防和/或治疗阿尔茨海默病、白内障、细胞免疫激活相关的感染、自身免疫性疾病、艾滋病、癌症、抑郁症或色氨酸代谢异常的药物
所述前药是前述化合物的衍生物,它们自身可能具有较弱的活性或甚至没有活性,但是在给药后,在生理条件下(例如通过代谢、溶剂分解或另外的方式)被转化成相应的生物活性形式。
所述的制剂可以包括注射剂或口服制剂。
本发明中的关键中间体和化合物进行分离和纯化,所使用的方式是有机化学中常用的分离和纯化方法。
本发明的一种或多种化合物可以彼此联合使用,也可选择将本发明的化合物与任何其它的活性试剂结合使用,用于制备IDO抑制剂。如果使用的是一组化合物,则可将这些化合物同时、分别或有序地对受试对象进行给药。
本发明所述药学上可接受的辅料,是指除活性成分以外包含在剂型中的物质。
经试验证明,本发明提供的1H-吲唑-4-胺类化合物对IDO具有优异的抑制作用,可以用于预防和/或治疗多种疾病,如阿尔茨海默病、白内障、细胞免疫激活相关的感染、自身免疫性疾病、艾滋病、癌症、抑郁症或色氨酸代谢异常等。
本发明中,英文缩写的涵义如下所示:
DHP:1,4-Dihydropyridine,二氢吡啶。
DMF:Dimethylformamide,二甲基甲酰胺。
DCC:Dicyclohexylcarbodiimide,二环己基碳二亚胺。
DIEA:N,N-Diisopropylethylamine,N,N-二异丙基乙胺。
EA:Ethyl acetate,乙酸乙酯。
EDCI:1-乙基-(3-二甲基氨基丙基)碳二亚胺盐酸盐。
Et3N:Triethylamine,三乙胺。
HOBT:1-Hydroxybenzotriazole,1-羟基苯并三氮唑。
HATU:2-(7-偶氮苯并三氮唑)-N,N,N',N'-四甲基脲六氟磷酸酯。
PE:Petroleum ether,石油醚。
TFA:Tallow Fatty Acid,三氟乙酸。
THF:Tetrahydrofuran,四氢呋喃。
显然,根据本发明的上述内容,按照本领域的普通技术知识和惯用手段,在不脱离本发明上述基本技术思想前提下,还可以做出其它多种形式的修改、替换或变更。
以下通过实施例形式的具体实施方式,对本发明的上述内容再作进一步的详细说明。但不应将此理解为本发明上述主题的范围仅限于以下的实例。凡基于本发明上述内容所实现的技术均属于本发明的范围。
具体实施方式
所述试剂和原料均来自市售的商品,除专门标注了来源的起始原料外,其余试剂购于成都科龙化学试剂公司。
实施例1中间体原料的合成
(1)6a和6b的合成
将原料4-硝基-1H-吲唑5a(CAS:2942-40-7,1.4g,8.26mmol,购于安耐吉化学试剂有限公司)或6-溴-4-硝基-1H-吲唑5b(CAS:885518-46-7,2.0g,8.26mmol,购于江苏南通生物科技有限公司)溶于乙醇(20mL)和水(10mL)的混合溶剂中,加入氯化铵(221.5mg,4.13mmol),先将一部分铁粉(1.3g,23.46mmol)加入其中,升温至80℃搅拌反应5分钟,再将另剩余铁粉(1.0g,17.86mmol)加入,继续搅拌反应20分钟。TLC检测原料反应完全后,将反应液趁热过滤,滤渣用乙醇(10mL)洗。减压旋去乙醇,用乙酸乙酯(20mL)萃取水层三次。合并有机相,用饱和食盐水洗涤,无水硫酸镁干燥,旋干,过柱(PE:EA=8:1),得淡黄色固体,收率92-94%。6a的收率为94%,6b的收率为92%。
(2)6c的合成
2,5-二甲基-1,3-二硝基苯(8)的合成
将对二甲苯(7)(360.0mg,3.40mmol)装于圆底烧瓶中,冰浴冷却至0℃,缓慢滴加,90%硝酸溶液和浓硫酸(2:1)的混酸溶液(1mL),有固体析出,室温搅拌反应3h,TLC检测原料(7)反应完全后,将反应液倒入冰水中,过滤,滤饼真空干燥箱干燥12h,得淡黄色固体545.8mg,收率82%。
2,5-二甲基-3-硝基苯胺(9)的合成
将2,5-二甲基-1,3-二硝基苯(8)(196.0mg,1.00mmol)溶于MeOH(6mL)和二氧六环(3mL)中,加入浓盐酸(0.60mL)和Fe(168.90mg,3.00mmol),升至80℃搅拌反应12h。TLC检测原料(8)反应完全后,先过滤,再将反应液旋干,加少量水,饱和NaHCO3溶液将PH调至7~8,乙酸乙酯提取三次,乙酸乙酯层用饱和食盐水洗涤,无水硫酸镁干燥,旋干得淡黄色固体142.8mg,收率86%。
6-甲基-4-硝基-1H-吲唑(10)的合成
将2,5-二甲基-3-硝基苯胺(9)(83.0mg,0.50mmol)溶于冰醋酸(3mL)中,再将NaNO2(69.0mg,1.00mmol)溶于水(0.5mL)中,室温搅拌下将NaNO2的水溶液缓慢滴加到2,5-二甲基-3-硝基苯胺(9)的冰醋酸溶液中,有固体析出,室温搅拌反应13h。TLC检测原料(9)反应完全后,将反应液倒入冰水中,过滤,滤饼真空干燥箱干燥12h,得黄色固体79.6mg,收率90%。
6-甲基-1H-吲哚-4-胺(6c)的合成
将原料6-甲基-4-硝基-1H-吲唑(10)(50mg,0.28mmol)溶于乙醇(2mL)和水(1mL)的混合溶剂中,加入氯化铵(1.6mg,0.03mmol),再加入铁粉(79.1mg,1.41mmol)加入其中,升温至80℃搅拌反应0.5h,TLC检测原料(10)反应完全后,将反应液趁热过滤,滤渣用乙醇洗。减压旋去乙醇,用乙酸乙酯萃取水层三次。合并有机相,用饱和食盐水洗涤,无水硫酸镁干燥,旋干,过柱(PE:EA=10:1),得34.9mg淡黄色固体,收率84%。
实施例2本发明化合物3a、3b和3c的合成
2-(6-溴-1H-吲唑-4-氨基)乙酸乙酯(11)的合成
将6-溴-1H-吲唑-4-氨基6b(212.0mg,1.00mmol)溶于DMF(5mL)中,加入碳酸钾(345.0mg,2.50mmol)和碘化钾(14.9mg,0.09mmol)。氩气保护下,加入溴乙酸乙酯(167.0μL,1.50mmol),65℃反应过夜。TLC检测原料(6b)反应完全后,用油泵抽走大量的DMF,加入乙酸乙酯(25mL),用水(20mL)洗三次。乙酸乙酯层用饱和食盐水洗涤,无水硫酸镁干燥,旋干过柱(PE:EA=15:1)。得淡黄色固体206.9mg,收率70%。
2-(6-溴-1H-吲唑-4-氨基)乙酸(12)的合成
将2-(6-溴-1H-吲唑-4-氨基)乙酸乙酯(11)(80.0mg,0.27mmol)溶于乙醇(1.5mL)和水(1.5mL)中,加入氢氧化钠(32.2mg,0.81mmol),室温搅拌反应过夜。TLC检测原料反应完毕后,用1mol/L的稀盐酸调pH为5,减压旋干反应液,直接用于下一步反应,收率100%
2-(6-溴-1H-吲唑-4-氨基)-N-四氢-2H-吡喃-4-乙酰胺(3a)的合成
将酸12(50.0mg,0.19mmol)溶于二氯甲烷(3mL)中,置于冰浴下,滴入四氢-2H-吡喃-4-胺13(57uL,0.56mmol),分别将EDCI(42.6mg,0.22mmol)、HoBt(32.4mg,0.22mmol)、DIEA(61uL,0.37mmol)加入,0℃反应5分钟后,升至室温(25℃)搅拌过夜。TLC检测待原料(12)反应完全后,反应液用饱和碳酸氢钠(1.5mL)洗涤,有机相旋干、过柱(PE:EA=10:1),得白色粉末42.1mg,收率65%。
1H-NMR(400MHz,d6-DMSO,ppm):δ8.22(d,1H,J=7.5Hz,amide),8.07(s,1H,indazole-H3),6.87(s,1H,indazole-H7),6.29(d,1H,J=1.1Hz,indazole-NH),6.14(s,1H,indazole-H5),4.90(s,1H,CH2),3.85-3.76(m,4H,pyran-H2and pyran-H6),3.52-3.48(m,1H,pyran-H4),3.42-3.34(m,4H,pyran-H3and pyran-H5).ESI-MS:375.0452[M+Na].
2-(6-溴-1H-吲唑-4-氨基)-N-(4-乙氧羰基苯基)乙酰胺(3c)的合成
以酸12(50.0mg,0.19mmol)和4-氨基苯甲酸乙酯14(91.5mg,0.56mmol)为原料,按照3a的制备方法得到,得到3c 46.4mg,收率60%。1H-NMR(400MHz,d6-DMSO,ppm):δ10.67(s,1H,amide),8.13(s,1H,indazole-H3),7.82(d,2H,J=8.7Hz,Ar-H2and Ar-H6),7.74(d,2H,J=8.7Hz,Ar-H3and Ar-H5),6.98(s,1H,indazole-H7),6.32(d,1H,J=1.2Hz,indazole-NH),6.18(s,1H,indazole-H5),5.21(s,2H,benzyl-CH2),4.48(q,2H,J=6.8Hz,CH 2CH3),1.30(t,3H,J=6.8Hz,CH2CH 3).ESI-MS:417.03[M+H].
2-(6-溴-1H-吲唑-4-氨基)-N-(4-羧基苯基)乙酰胺(3b)的合成
将酰胺3c(40.0mg,0.10mmol)溶于乙醇(1.0mL)和水(1.0mL)中,加入氢氧化钠(11.5mg,0.29mmol),室温搅拌过夜。TLC检测待原料反应完全后,用1mol/L的稀盐酸调pH为5,有白色固体析出,过滤,减压干燥,得15.6mg白色固体,收率42%。
1H-NMR(400MHz,d6-DMSO,ppm):δ12.80(br,1H,COOH),10.67(s,1H,amide),8.13(s,1H,indazole-H3),7.91(d,2H,J=8.7Hz,Ar-H2and Ar-H6),7.79(d,2H,J=8.7Hz,Ar-H3and Ar-H5),6.98(s,1H,indazole-H7),6.32(d,1H,J=1.2Hz,indazole-NH),6.18(s,1H,indazole-H5),5.21(s,2H,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ207.0,167.3,166.7,143.9,143.1,132.9,131.0,126.0,121.9,118.9,113.2,104.7,99.6,52.2.ESI-MS:389.03[M+H].
实施例3本发明化合物1a、1c-j和1p的合成
将胺6b(0.28mmol)和苯甲醛16(0.24mmol)溶于二氯甲烷(DCM,3mL)中,加入二氢吡啶(DHP,83.5mg,0.33mmol)和适量4A分子筛(840.2mg),滴入三氟醋酸(TFA,17.6μL,0.24mmol),40℃回流12小时,将反应液过滤,旋干,过柱得化合物1a。
4-((6-溴-1H-吲唑-4-氨基)甲基)苯甲酸(1a).收率64%;棕色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.80(br,2H,COOH and indazole-NH),8.22(s,1H,indazole-H3),7.91(d,2H,J=8.3Hz,Ar-H2and Ar-H6),7.49(d,2H,J=8.3Hz,Ar-H3and Ar-H5),6.64(s,1H,indazole-H7),6.01(s,1H,indazole-H5),4.53(s,2H,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ167.7,145.3,143.0,142.2,132.5,130.0,129.9,127.5,121.7,112.6,101.2,100.6,46.2.ESI-MS:344.0035[M-H].
选择相应的醛原料,按照类似的方法制备得到化合物1c-j和1p,结果和表征如下:
N-苄基-6-溴-1H-吲唑-4-胺(1c).收率43%;棕色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.83(s,1H,indazole-NH),8.23(s,1H,indazole-H3),7.40-7.23(m,5H,Ar-H),6.83(s,1H,indazole-H7),6.06(s,1H,indazole-H5),4.44(d,2H,J=6.0Hz,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ143.2,142.1,139.9,132.7,128.9,127.5,127.3,121.7,112.6,101.2,100.3,46.4.ESI-MS:302.02[M+H].
3-((6-溴-1H-吲唑-4-氨基)甲基)苯甲酸(1d).收率60%;棕色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.90(br,2H,COOH and indazole-NH),8.22(s,1H,indazole-H3),7.98(s,1H,Ar-H2),7.83(d,1H,J=7.6Hz,Ar-H4),7.64(d,1H,J=7.6Hz,Ar-H6),7.48(t,1H,J=7.6Hz,Ar-H5),7.37(t,1H,J=6.0Hz,NH),6.84(s,1H,indazole-H7),6.05(s,1H,indazole-H5),4.51(d,2H,J=6.0Hz,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ167.8,143.0,142.2,140.6,132.5,132.1,131.4,129.1,128.3,128.3,121.7,112.6,101.2,100.5,46.0.ESI-MS:344.00[M-H].
6-溴-N-(4-甲基苄基)-1H-吲唑-4-胺(1e).收率65%;黄色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.82(s,1H,indazole-NH),8.22(s,1H,indazole-H3),7.26(d,2H,J=7.9Hz,Ar-H2and Ar-H6),7.14(d,2H,J=7.9Hz,Ar-H3and Ar-H5),6.82(s,1H,indazole-H7),6.04(s,1H,indazole-H5),4.38(d,2H,J=6.0Hz,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ143.2,141.2,136.8,136.3,132.7,129.4,127.5,121.7,112.6,101.2,100.2,46.2,21.1.ESI-MS:316.03[M+H].
6-溴-N-(4-氯苄基)-1H-吲唑-4-胺(1f).收率71%;黄色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.85(s,1H,indazole-NH),8.21(s,1H,indazole-H3),7.40(s,4H,Ar-H),7.32(t,1H,J=6.0Hz,NH),6.84(s,1H,indazole-H7),6.03(s,1H,indazole-H5),4.43(d,2H,J=6.0Hz,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ142.9,142.1,139.0,132.6,131.8,129.3,127.5,121.7,112.6,101.3,100.5,45.7.ESI-MS:335.97[M+H].
4-((6-溴-1H-吲唑-4-氨基)甲基)苯酚(1g).收率59%;黄色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.80(s,1H,indazole-NH),9.29(s,1H,indazole-H3),8.21(s,1H,OH),7.17(d,2H,J=8.4Hz,Ar-H3and Ar-H5),6.81(s,1H,indazole-H7),6.72(d,2H,J=8.4Hz,Ar-H2and Ar-H6),6.06(s,1H,indazole-H5),4.29(d,2H,J=6.0Hz,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ156.7,143.2,142.8,132.7,129.7,128.8,121.8,115.6,112.6,101.2,100.0,46.1.ESI-MS:318.03[M+H].
5-(((6-溴-1H-吲唑-4-氨基)甲基)-2-羟基苯甲酸hydroxybenzoic acid(1h).收率82%;棕色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.80(br,2H,COOH and indazole-NH),8.21(s,1H,indazole-H3),7.82(s,1H,Ar-H6),7.46(d,1H,J=8.4Hz,Ar-H4),7.24(t,1H,J=6.0Hz,NH),6.87(d,2H,J=8.4Hz,Ar-H3),6.83(s,1H,indazole-H7),6.06(s,1H,indazole-H5),4.35(d,2H,J=6.0Hz,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ167.8,143.0,142.2,140.6,132.5,132.1,131.4,129.2,128.3,121.7,117.3,112.6,101.1,100.4,49.1.ESI-MS:360.02[M-H].
2-(4-((6-溴-1H-吲唑-4-氨基)甲基)苯基)乙酸(1i).收率81%;黄色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.80(br,2H,COOH and indazole-NH),8.23(s,1H,indazole-H3),7.33(d,2H,J=8.0Hz,Ar-H2and Ar-H6),7.23(d,2H,J=8.0Hz,Ar-H3andAr-H5),6.83(s,1H,indazole-H7),6.05(s,1H,indazole-H5),4.40(s,2H,CH 2NH),3.18(s,2H,CH 2COOH).13C-NMR(100MHz,d6-DMSO,ppm):δ173.2,143.2,142.2,138.1,134.0,132.6,129.9,127.5,121.8,112.6,101.2,100.3,49.1,46.2.ESI-MS:358.03[M-H].
2-((6-溴-1H-吲唑-4-氨基)甲基)苯酚(1j).收率63%;黄色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.81(s,1H,indazole-NH),9.63(s,1H,indazole-H3),8.22(s,1H,indazole-H7),7.19-7.05(m,2H,Ar-H4and Ar-H6),6.87-6.72(m,2H,Ar-H3and Ar-H5),6.05(s,1H,indazole-H5),4.34(d,2H,J=5.8Hz,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ155.4,143.4,142.1,132.7,128.5,128.2,125.3,121.8,119.4,115.4,112.5,100.9,100.0,49.1.ESI-MS:318.02[M+H].
6-溴-N-(2-硝基苄基)-1H-吲唑-4-胺(1p).收率70%,黄色固体。1H-NMR(400MHz,d6-DMSO,ppm):δ12.20(s,1H,indazole-NH),8.31(s,1H,indazole-H3),7.98-7.55(m,4H,Ar-H),6.69(d,1H,J=7.9Hz,indazole-H7),6.01(d,1H,J=7.1Hz,indazole-H5),4.56(s,2H,benzyl-CH2).ESI-MS:346.11[M+H]。
实施例4本发明化合物1b的合成
按照实施例3中类似的方法合成化合物1b,区别在于以化合物6a替代化合物6b,得化合物1b。
4-((1H-吲唑-4-氨基)甲基)苯甲酸(1b).收率62%;棕色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.79(br,2H,COOH and indazole-NH),8.22(s,1H,indazole-H3),7.90(d,2H,J=7.4Hz,Ar-H2and Ar-H6),7.50(d,2H,J=7.4Hz,Ar-H3and Ar-H5),6.99-6.96(m,1H,indazole-H6),6.66(d,1H,J=7.9Hz,indazole-H7),5.90(d,1H,J=7.1Hz,indazole-H5),4.52(s,2H,benzyl-CH2).13C-NMR(100MHz,d6-DMSO,ppm):δ167.7,146.1,142.0,141.7,132.1,129.9,129.7,128.0,127.5,113.8,98.2,98.1,46.5.ESI-MS:266.11[M-H].
实施例5本发明化合物1k的合成
(1S,2S)-2-羟基环己烷甲醛(17)的合成
将庚二醛(40.0mg,0.31mmol)溶于DCM(2mL)中,加入L-脯氨酸(3.6mg,0.031mmol),室温搅拌反应两小时。TLC检测待原料庚二醛反应完全后。旋干,过柱(PE:EA=6:1),得白色液体34.5mg,收率86%。
(1S,2R)-2-((6-溴-1H-吲唑-4-氨基)甲基)环己醇(1k)的合成
制备化合物1k(56.3mg,0.17mmol,收率62%):以胺6b(60.0mg,0.28mmol)和醛17(30.7mg,0.24mmol)为原料,按照1a的制备方法得到。
黄色固体。1H-NMR(400MHz,CDCl3,ppm):δ7.94(s,1H,indazole-H3),6.96(s,1H,indazole-H7),6.33(s,1H,indazole-H5),3.56-3.50(m,1H,cyclohexanol-H1),3.35-3.25(m,2H,CH2NH),2.03-2.00(m,1H,cyclohexanol-H3),1.88-1.71(m,4H,cyclohexanol-H3and H6),1.39-1.25(m,4H,cyclohexanol-H4and H5).13C-NMR(100MHz,d6-DMSO,ppm):δ142.8,141.8,131.9,123.0,112.7,102.8,101.1,49.3,44.1,36.1,30.9,29.7,25.2,24.6.ESI-MS:346.0498[M+Na].
实施例6本发明化合物1l、1m、1n和1o的合成
合成路线如下所示:
(1)4-(1-((6-溴-1H-吲唑-4-氨基)-2-羟乙基)苯甲酸甲酯(1m)和4-(2-((6-溴-1H-吲唑-4-氨基)-1-羟乙基)苯甲酸甲酯(1o)的合成
将环氧18(229.2mg,1.42mmol)和苯胺6b(300.0mg,1.42mmol)溶于乙醇和水1:1的混合溶液(20mL)中,升温至100℃回流反应过夜。TLC检测待原料(18)反应完全后,减压旋走乙醇,用乙酸乙酯(15mL)萃取反应液3次,合并有机相,用饱和食盐水洗涤,无水硫酸镁干燥,旋干,过柱。先用PE:EA=15:1冲去小极性杂质,再用PE:EA=6:1洗脱化合物1m,最后用PE:EA=3:1洗脱化合物1o(总收率43%)。
化合物1m:收率20%;棕色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.87(s,1H,indazole-NH),8.33(s,1H,indazole-H3),7.92(d,2H,J=8.3Hz,Ar-H2and Ar-H6),7.57(d,2H,J=8.3Hz,Ar-H3and Ar-H5),6.94(d,1H,J=6.8Hz,NH),6.82(s,1H,indazole-H7),5.88(s,1H,indazole-H5),5.11(t,1H,J=5.3Hz,OH),4.69-4.64(m,1H,NHCH),3.83(s,3H,OCH3),3.76-3.71(m,2H,OHCH 2).
化合物1o:收率23%;棕色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.81(s,1H,indazole-NH),8.18(s,1H,indazole-H3),7.94(d,2H,J=8.3Hz,Ar-H2and Ar-H6),7.56(d,2H,J=8.3Hz,Ar-H3and Ar-H5),6.83(s,1H,indazole-H7),6.67(t,1H,J=5.7Hz,NH),6.19(s,1H,indazole-H5),5.77(d,1H,J=4.4Hz,OH),4.93-4.89(m,1H,OHCH),3.86(s,3H,OCH3),3.34(m,2H,NHCH 2).
(2)4-(1-((6-溴-1H-吲唑-4-氨基)-2-羟乙基)苯甲酸(1l)和4-(2-(6-溴-1H-吲唑-4-氨基)-1-羟乙基)苯甲酸(1n)的合成
以酯1m(45.0mg,0.11mmol)为原料,按照实施例2中3b的制备方法得到化合物1l(38mg,0.10mmol),棕色固体。
1H-NMR(400MHz,d6-DMSO,ppm):δ12.87(br,2H,COOH and indazole-NH),8.35(s,1H,indazole-H3),7.91(d,2H,J=8.2Hz,Ar-H2and Ar-H6),7.54(d,2H,J=8.2Hz,Ar-H3and Ar-H5),6.97(d,1H,J=6.7Hz,NH),6.81(s,1H,indazole-H7),5.89(s,1H,indazole-H5),5.13(br,1H,OH),4.68-4.63(m,1H,NHCH),3.75-3.71(m,2H,OHCH 2).13C-NMR(100MHz,d6-DMSO,ppm):δ167.7,147.0,142.5,142.2,132.7,131.0,129.9,127.5,121.5,112.7,101.9,100.6,65.8,59.8,49.1.ESI-MS:376.0299[M+H].
以酯1o(45.0mg,0.11mmol)为原料,按照实施例2中3b的制备方法得到化合物1n(38mg,收率87%),棕色固体。
1H-NMR(400MHz,d6-DMSO,ppm):δ12.85(br,2H,COOH and indazole-NH),8.20(s,1H,indazole-H3),7.92(d,2H,J=8.3Hz,Ar-H2and Ar-H6),7.53(d,2H,J=8.3Hz,Ar-H3and Ar-H5),6.84(s,1H,indazole-H7),6.71(t,1H,J=5.7Hz,NH),6.19(s,1H,indazole-H5),5.78(br,1H,OH),4.91(m,1H,OHCH),4.13(m,1H,NHCH).13C-NMR(100MHz,d6-DMSO,ppm):δ167.8,149.4,143.2,142.2,132.6,129.6,126.7,121.9,112.6,100.8,100.2,70.6,51.2.ESI-MS:376.0293[M+H].
实施例7本发明化合物1q的合成
将硝基化合物1p(2.9g,8.26mmol)溶于乙醇(20mL)和水(10mL)的混合溶剂中,加入氯化铵(221mg,4.13mmol),先将一部分铁粉(1.314g,23.46mmol)加入其中,升温至80℃搅拌反应5分钟,再将另剩余铁粉(1g,17.86mmol)加入,继续搅拌反应20分钟。TLC检测原料1p反应完全后,将反应液趁热过滤,滤渣用乙醇(10mL)洗。减压旋去乙醇,用乙酸乙酯(20mL)萃取水层三次。合并有机相,用饱和食盐水洗涤,无水硫酸镁干燥,旋干,过柱((PE:EA=3:1)),得2.4g淡黄色固体,收率92.1%。
1H-NMR(400MHz,d6-DMSO,ppm):δ12.21(s,1H,indazole-NH),8.30(s,1H,indazole-H3),6.69(d,1H,J=7.9Hz,indazole-H7),6.91-6.01(m,5H,Ar-H,indazole-H5),4.35(s,2H,benzyl-CH2).ESI-MS:316.13[M+H].
实施例8本发明化合物1r的合成
按照实施例3中类似的方法合成化合物1r,区别在于以化合物6c替代化合物6b,得化合物1r。
4-((6-甲基-1H-吲唑-4-氨基)甲基)苯甲酸(1r).收率70%;黄色固体;1H-NMR(400MHz,d6-DMSO,ppm):δ12.79(br,2H,COOH and indazole-NH),8.23(s,1H,indazole-H3),7.91(d,2H,J=7.4Hz,Ar-H2and Ar-H6),7.43(d,2H,J=7.4Hz,Ar-H3and Ar-H5),6.62(d,1H,J=7.9Hz,indazole-H7),5.84(d,1H,J=7.1Hz,indazole-H5),4.48(s,2H,benzyl-CH2),2.38(s,3H,CH3).13C-NMR(100MHz,d6-DMSO,ppm):δ167.7,146.1,142.0,141.7,132.1,129.9,129.7,128.0,127.5,113.8,98.2,98.1,46.5,21.5.ESI-MS:281.12[M+H].
实施例9本发明化合物2a-d的合成
将原料(6b)(50mg,0.185mmol)溶于二氯甲烷(3mL)中,置于冰浴下,滴入化合物21(97.6mg,0.708mmol),分别将EDCI(62.4mg,0.329mmol)、HOBT(48mg,0.329mmol)、DIEA(77.5uL,0.470mmol)加入,0℃反应5分钟后,升至室温(30℃)搅拌过夜。TLC检测待原料(6a)反应完全后,反应液用水(1mL)洗涤,再用饱和碳酸氢钠(1.5mL)洗涤,有机相旋干、过柱,得2a。黄色固体27.1mg,结构表征如下:
3-((6-溴-1H-吲唑-4-氨基甲酰))苯酚(2a)
1H-NMR(400MHz,d6-DMSO,ppm):δ12.83(br,2H,indazole-NH and Ar-OH),8.52(s,1H,indazole-H3),7.62(s,1H,indazole-H7),6.76-8.09(m,4H,Ar-H),7.15(m,1H,Ar-H5),6.76(s,1H,indazole-H5),6.26(s,1H,NHCO).ESI-MS:332.01[M+H].
按照类似的方法,选择相应取代基的苯甲酸,制备得到2b黄色固体35.3mg,收率45.3%。棕黄色固体2c,36.3mg,收率41.5%。结构表征如下:
3-((6-溴-1H-吲唑-4-氨基甲酰))苯胺(2b)
1H-NMR(400MHz,d6-DMSO,ppm):δ12.75(s,1H,indazole-NH),8.50(s,1H,indazole-H3),7.64(s,1H,indazole-H7),7.18(d,1H,J=7.9Hz,Ar-H6),7.15(m,1H,Ar-H5),7.13(s,1H,indazole-H5),7.12(s,1H,Ar-H2),7.05(d,1H,J=7.6,Ar-H4),6.54(s,1H,NHCO).ESI-MS:331.01[M+H].
4-((6-溴-1H-吲唑-4-氨基甲酰))苯甲酸(2c)
1H-NMR(400MHz,d6-DMSO,ppm):δ13.12(br,2H,COOH and indazole-NH),8.56(s,1H,indazole-H3),8.07(d,2H,J=8.3Hz,Ar-H2and Ar-H6),8.03(d,2H,J=8.5Hz,Ar-H3and Ar-H5),7.67(s,1H,indazole-H7),6.70(s,1H,indazole-H5),6.62(s,1H,NHCO).ESI-MS:359.98[M+H].
实施例10本发明化合物4a和4b的合成
用5mLTHF将化合物(22)(0.63mmol)和三乙胺(0.27ml,1.95mmol)溶解,在0℃搅拌下加入化合物(23)(0.06g,0.20mmol),同温搅拌反应3h后加入化合物(6b)(0.09g,0.42mmol),加毕,升至室温搅拌反应12h后TCL显示完全反应。直接将反应液旋干得粗品,粗品经柱层析(PE:EA=2:1)纯化得白色固体粉末0.07g,收率41%。
化合物4a:1H-NMR(400MHz,d6-DMSO,ppm):δ12.40(s,1H,indazole-NH),10.12(br,1H,OH),8.90(s,1H,NHCONH),8.35(s,1H,NHCONH),8.20(s,1H,indazole-H3),7.31-7.68(m,4H,Ar-H),6.87(d,1H,J=7.9Hz,indazole-H7),5.99(d,1H,J=7.1Hz,indazole-H5).ESI-MS:347.11[M+H].
按照类似的方法合成化合物4b,区别在于以化合物3-氨基苯酚替代化合物22,得化合物4b,白色固体粉末,收率45%。
4b:1H-NMR(400MHz,d6-DMSO,ppm):δ12.40(s,1H,indazole-NH),10.12(br,1H,OH),8.90(s,1H,NHCONH),8.65(s,1H,NHCONH),8.20(s,1H,indazole-H3),7.38(d,2H,J=7.4Hz,Ar-H2and Ar-H6),6.87(d,1H,J=7.9Hz,indazole-H7),6.73(d,2H,J=7.4Hz,Ar-H3and Ar-H5),5.99(d,1H,J=7.1Hz,indazole-H5).ESI-MS:347.11[M+H].
实施例11本发明化合物4c和4d的合成
用4mLCH2Cl2和4mL饱和NaHCO3将化合物(25)(0.34mmol)溶于圆底烧瓶中,在0℃搅拌下加入化合物(23)(0.03g,0.10mmol),同温搅拌反应15min后TCL显示完全反应。将反应液倒入分液漏斗中,收集有机层,干燥,浓缩,未经纯化直接投下一步。
用5mLCH2Cl2将化合物(26)(0.34mmol)和化合物(6b)(0.06g,0.28mmol)溶解,置于0℃搅拌反应10h后TCL显示完全反应。直接将反应液旋干得粗品,粗品经柱层析(PE:EA=3:1)纯化得白色固体粉末0.05g,收率51%。
4c:1H-NMR(400MHz,d6-DMSO,ppm):δ12.40(s,1H,indazole-NH),10.12(br,1H,OH),8.90(s,1H,NHCONH),7.62(s,1H,NHCONH),8.20(s,1H,indazole-H3),6.95(d,2H,J=7.4Hz,Ar-H2and Ar-H6),6.71(d,1H,J=7.9Hz,indazole-H7),6.73(d,2H,J=7.4Hz,Ar-H3and Ar-H5),5.99(d,1H,J=7.1Hz,indazole-H5),4.25(s,2H,benzyl-CH2).ESI-MS:361.01[M+H].
按照类似的方法合成化合物4d,区别在于以化合物3-羟基苄胺替代化合物25,得化合物4d,白色固体粉末,收率55%
4d:1H-NMR(400MHz,d6-DMSO,ppm):δ12.40(s,1H,indazole-NH),10.12(br,1H,OH),8.90(s,1H,NHCONH),7.62(s,1H,NHCONH),8.20(s,1H,indazole-H3),6.71(d,1H,J=7.9Hz,indazole-H7),5.99(d,1H,J=7.1Hz,indazole-H5),7.10-6.72(m,4H,Ar-H),4.43(s,2H,benzyl-CH2).ESI-MS:361.01[M+H].
实施例12本发明化合物对IDO蛋白的抑制活性
重组人IDO蛋白经大肠杆菌表达,镍亲合层析纯化而得。化合物对IDO抑制活性实验采用L-色氨酸作为底物。待测化合物溶解在10%DMSO溶液中配制成稀释液。取5uL稀释液加入到100μL反应体系中。100μL反应体系中含有0.5%DMSO,40nmol/L IDO,900μmol/L L-色氨酸,以及其他反应共存物(磷酸钾缓冲液、抗坏血酸、过氧化氢酶,亚甲基蓝)。反应混合物于37度下培育180分钟,再加入三氯乙酸终止反应。使用Tecan Infinite M1000酶标仪在321nm处测定产生的N-甲酰基犬尿氨酸的浓度,从而评价化合物对IDO的抑制活性。阴性对照物是以5μL的缓冲液代替IDO。临床III期的IDO抑制剂INCB024360作为阳性对照,验证本实验建立的IDO活性检测体系是否有效。
每个浓度设立三复孔。使用软件Graphpad Prism进行数据分析。在不含待测化合物的反应液中,吸光度(At)定义为100%活性。在不含IDO的反应液中,吸光度(Ab)定义为0%活性。对于待测化合物,活性的计算公式为:%activity=[(A-Ab)/(At-Ab)]×100,其中A为含待测化合物的反应液的吸光度。抑制率的计算公式为:%inhibition=100-%activity.
通过以上实验方法,测试了本发明中的部分化合物针对IDO的抑制活性。具体部化合物在1μM、10μM、100μM浓度下的抑制活性见表1。
其中A表示抑制率大于90%、B表示抑制率为70-90%,C表示抑制率为50-69%;D表示抑制率为10-49%,E表示抑制率小于10%;阳性对照物在浓度为0.05μM时的抑制率为46%。
表1 本发明化合物对IDO的抑制活性
构效关系显示:当R1为含卤素的取代基时,化合物的IDO酶抑制活性显著增加;而R1为H或甲基时,活性显著降低。当Y为氨基连接时,化合物的活性显著增加。当R2结构中含有能形成氢键的官能团时,化合物的活性显著增加。
经试验证明,本发明提供的1H-吲唑-4-胺类化合物对IDO具有优异的抑制作用,可以用于预防和/或治疗多种疾病,如阿尔茨海默病、白内障、细胞免疫激活相关的感染、自身免疫性疾病、艾滋病、癌症、抑郁症或色氨酸代谢异常等。
Claims (9)
7.权利要求1所述化合物在制备IDO抑制剂类药物上的用途。
8.根据权利要求7所述的用途,其特征在于:所述药物是预防和/或治疗阿尔茨海默病、白内障、细胞免疫激活相关的感染、自身免疫性疾病、艾滋病、癌症、抑郁症或色氨酸代谢异常的药物。
9.一种药物组合物,其特征在于:它是以权利要求1所述的化合物为活性成分,加上药学上可接受的辅料制备而成的制剂。
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CN107840826B (zh) * | 2016-09-19 | 2021-07-09 | 西华大学 | 1h-吲唑类衍生物及其作为ido抑制剂的用途 |
CN113651820A (zh) * | 2017-03-21 | 2021-11-16 | 正大天晴药业集团股份有限公司 | 用于ido和tdo双重抑制剂的脲类化合物 |
CN108689937B (zh) * | 2017-04-10 | 2021-09-17 | 西华大学 | 吲唑类化合物及其在制备ido抑制剂类药物上的用途 |
CN108689938B (zh) * | 2017-04-10 | 2021-07-30 | 西华大学 | 多取代的吲唑类化合物及其作为ido抑制剂的用途 |
CN111601808B (zh) * | 2017-10-19 | 2023-09-08 | 捷思英达医药技术(上海)有限公司 | 杂环化合物及其组合物和使用方法 |
CN111285808B (zh) * | 2018-12-07 | 2023-06-23 | 西华大学 | 4位芳杂环取代的吲唑类化合物及其作为ido/tdo双重抑制剂的用途 |
CN111689901A (zh) * | 2019-03-13 | 2020-09-22 | 西华大学 | 一类具有tdo、ido1双重抑制活性的化合物及制备治疗神经退行性疾病药物的用途 |
CN111039790B (zh) * | 2019-11-29 | 2022-04-19 | 浙江工业大学 | 一种2,6-二硝基对苯二甲酸的合成方法 |
JP2023504623A (ja) * | 2019-12-04 | 2023-02-06 | アーカス バイオサイエンシーズ,インコーポレーテッド | Hif-2アルファの阻害剤 |
KR20230004493A (ko) | 2020-04-17 | 2023-01-06 | 에시언트 파마슈티컬스 인코포레이티드 | Mas-관련 G-단백질 수용체 X4의 조절제 및 관련 제품 및 방법 |
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