CN110878096A - 一种1,7-萘啶类衍生物及其制备方法和用途 - Google Patents
一种1,7-萘啶类衍生物及其制备方法和用途 Download PDFInfo
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- CN110878096A CN110878096A CN201811032376.5A CN201811032376A CN110878096A CN 110878096 A CN110878096 A CN 110878096A CN 201811032376 A CN201811032376 A CN 201811032376A CN 110878096 A CN110878096 A CN 110878096A
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- China
- Prior art keywords
- alkyl
- halogen
- formula
- hydroxy
- naphthyridine
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- 150000005057 1,7-naphthyridines Chemical class 0.000 title description 2
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- 208000007502 anemia Diseases 0.000 claims description 34
- 125000000217 alkyl group Chemical group 0.000 claims description 26
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Abstract
本发明涉及一种式(I)所示的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药,所述化合物的制备方法,包含其的药物组合物及所述化合物或药物组合物在制备治疗或减轻患者的HIF相关和/或EPO相关的疾病或病症的药物中的用途。
Description
技术领域
本发明涉及医药技术领域,具体而言,涉及一类新的1,7-萘啶类衍生物及其制备方法,包含其的药物组合物及所述化合物或药物组合物在制备药物中的用途。
背景技术
缺氧诱导因子(hypoxia inducible factor,HIF)即低氧诱导因子,由Semenza和Wang在1992年首次发现,是一种转录调节因子,普遍存在于人体细胞中,参与机体的多种生理功能调控。目前,已经证实大约有100多个基因受到HIF的调控,调控产生的编码产物,包括促红细胞生成素(erythropoietin,EPO)、诱导型一氧化碳合酶(inducible nitricoxide synthase,iNOS)、运铁蛋白(transferrin)、血管内皮生长因子(vascularendothelial growth factor,VEGF)等,在红细胞生成、血管生长、肿瘤生长以及新陈代谢和细胞分化等方面发挥着重要作用。
HIF是一种异源二聚体,由α亚基(HIF-α)和β亚基(HIF-β)构成,主要有三个亚型:HIF-1、HIF-2、HIF-3。其中,它们的α亚基不同,为功能性亚基,决定了HIF的生物学活性,其活性水平的表达受氧气含量的影响,在含氧量正常的细胞内不能稳定存在,半衰期仅为5分钟,只有在缺氧条件下才可以稳定的存在进而发挥作用;而β亚基相同,为结构性亚基,其蛋白的表达不受氧气含量的影响。
脯氨酸羟化酶(prolyl hydroxylase,PHD)属于双加氧酶超家族,是Fe2+,2-酮戊二酸依赖的加氧酶。目前已发现4种亚型,分别为PHD1、PHD2、PHD3和PHD4,前三种研究较多。PHD1表达于细胞核中,PHD2表达于细胞质中,而PHD3在细胞核与细胞质中均有表达。目前研究发现,HIF-α是PHD的底物,PHD是HIF通路的重要调节因子之一,是HIF降解反应的限速酶,在正常氧气含量下,可识别HIF-α上的脯氨酸残基Pro402和Pro564,使之羟基化,然后经希佩尔林道蛋白的介导而泛素化的降解HIF-α。但是在缺氧条件下,PHD羟基化活性下降,使HIF-α降解过程受阻,HIF-α积累并稳定表达,从而可以改善贫血、心脏病患者及肾病患者的心衰及缺血、组织损伤等疾病。
EPO由肾脏组织合成释放,能够促进细胞内红细胞的生成,刺激骨髓造血功能,改善缺氧状态。目前EPO及重组EPO主要用于治疗慢性肾病,癌症化疗等导致的贫血。提高体内的EPO水平对于贫血症状的改善具有重要意义。临床使用EPO存在的问题有:1、容易超出EPO生理范围,引起心血管损伤;2、注射给药,使用便利性差;3、存在免疫原性问题,存在一定风险。
通过抑制PHD,减少HIF降解,使HIF累积表达从而促进EPO内源性的分泌,并使其水平维持在生理范围之内,提高细胞的造血功能。因此,开发小分子的HIF-PHD抑制剂,对于治疗由于肾脏EPO分泌不足甚至无法合成导致的肾性贫血具有重要的意义。
目前为止,已经研发出一些HIF-PHD抑制剂,其中,Fibrogen公司的Roxadustat处于预注册阶段。Akebia Therapeutics公司的Vadadustat、葛兰素史克公司的Daprodustat和拜耳公司的Molidustat处于Ⅲ期临床研究中。
开发结构新颖,药效更好,安全性更佳的小分子HIF-PHD抑制剂仍然迫切。
发明内容
本发明提供了一类结构新颖的HIF-PHD抑制剂化合物,可用于治疗各种HIF相关和/或EPO相关的疾病或病症,如贫血、心脏病患者及肾病患者的心衰及缺血、组织损伤等。具体而言,本发明涉及一种具有式(I)结构的化合物,及其制备方法,包含其的药物组合物及所述化合物或药物组合物在制备药物中的用途。
一方面,本发明涉及一种式(I)所示的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
其中,环A为五元至七元含氮芳杂环;
R1选自H或者C1-C6烷基;
R2选自H、卤素、C1-C6烷基或Z-R3;n选自1-3;
Z选自O或S;
R3选自未取代的或任选被一个或多个取代基取代的C6-C14芳香环、5-14元芳杂环。优选地,所述取代基独立地选自OH、卤素、C1-C6烷基、C1-C6烷氧基、卤素取代的C1-C6烷基,或R3选自氢或C1-C6烷基;
X选自卤素。
在一些实施方案中,环A为五元或六元含氮芳杂环;
R1选自H或者C1-C4烷基;
R2选自卤素、C1-C4烷基或Z-R3;
R3选自未取代的或任选被一个或多个取代基取代的C6-C14芳香环、5-14元芳杂环,所述取代基独立地选自OH、卤素、C1-C4烷基、C1-C4烷氧基、卤素取代的C1-C4烷基,或R3选自C1-C4烷基。
在一些实施方案中,所述A选自仅含有一个或两个氮原子作为杂原子的五元或六元芳杂环;所述R1选自H;所述R2选自卤素或Z-R3;n选自1,2;Z选自O;所述R3选自未取代的或任选被一个或多个取代基取代的C6-C14芳香环、5-14元芳杂环,所述取代基独立地选自OH、卤素、C1-C4烷基、C1-C4烷氧基、卤素取代的C1-C4烷基。
在一些实施方案中,所述环A选自吡啶、吡嗪、哒嗪、吡咯、咪唑;所述卤素选自F、Cl、Br、I。
在一些实施方案中,R2选自O-R3;R3选自任选被一个或多个取代基取代的C6-C14芳香环,或5-14元芳杂环,所述取代基独立地选自OH、卤素、C1-C4烷基、C1-C4烷氧基。更优选地,R3选自任选被一个或多个取代基取代的苯基或吡啶基,所述取代基独立地选自OH、卤素、C1-C4烷基、C1-C4烷氧基、卤素取代的C1-C4烷基,或R3选自C1-C4烷基。
在一些实施方案中,本发明所述的化合物为具有式(II)结构的化合物,或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
其中,R1、R2、n、X的定义如前述式(I)所示。
在一些实施方案中,本发明所述的化合物为具有式(III)结构的化合物,或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
其中,R1、n、X的定义如前述式(I)所示;X1独立地选自卤素;所述卤素可选自F、Cl、Br、I。
在一些实施方案中,本发明所述的化合物为具有式(IIIa)结构的化合物,或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
其中,R1、X1,X如前述式(III)定义。
在一些实施方案中,本发明所述的化合物为具有式(IV)结构的化合物,或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
其中,R1、R3、X的定义如前述式(I)所示。
优选地,R3选自未取代的或任选被一个或多个取代基取代的C6-C14芳香环、5-14元芳杂环,所述取代基独立地选自OH、卤素、C1-C6烷基、C1-C6烷氧基、卤素取代的C1-C6烷基,或R3选自氢或C1-C6烷基。更优选地,R3选自任选被一个或多个取代基取代的苯基或吡啶基,或者选自C1-C6烷基。还更优选地,R3选自任选被卤素、羟基、C1-C6烷氧基或卤素取代的C1-C4烷基取代的苯基或吡啶基,或者R3选自C1-C4烷基。
在一些实施方案中,本发明所述的化合物为具有式(V)结构的化合物,或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
其中,所述R1、X的定义如前述式(I)所示;
R4’、R5’、R6’、R7’、R8’独立地选自H、OH、卤素、C1-C6烷基、C1-C6烷氧基、卤素取代的C1-C6烷基,优选为H、OH、卤素、C1-C4烷基、C1-C4烷氧基、卤素取代的C1-C4烷基。
在一些实施方案中,含有OH、COOH部分的本发明的化合物可以具有与其连接的形成前体药物的部分。通过代谢除去形成前体药物的部分,并且在体内释放具有游离羟基或羧酸的化合物。前体药物可有效调节化合物的药物动力学性能,例如,溶解度和脂水分布系数,在胃肠道中的吸收,生物利用度,组织渗透性和廓清率。
因而,本发明还提供了如结构式(Ib)所示的化合物:
其中,R1、R2、n、X的定义如前述式(I)所示;
R4选自未取代的或被R5取代的C1-C6烷基,优选为未取代的或被R5取代的C1-C4烷基;
R5选自C1-C6烷氧基-、C1-C6烷基(C=O)-、C1-C6烷基(C=O)O-,优选为C1-C4烷氧基-、C1-C4烷基(C=O)-、C1-C4烷基(C=O)O-。
优选的,R4选自C1-C6烷基(C=O)O-C1-C6烷基-,更优选的为C1-C4烷基(C=O)O-C1-C4烷基-,例如选自叔丁基-(C=O)O-CH2-。
在一些实施方案中,本发明所述的化合物具有式(IIb)结构
其中,R1、R2、n、X的定义如前述式II所示;
R4的定义如前述式(Ib)所示。
在一些实施方案中,本发明所述的化合物具有式(IIIb)结构
其中,R1、X1、X的定义如前述式(III)所示;
R4的定义如前述式(Ib)所示。
在一些实施方案中,本发明所述的化合物具有式(IVb)结构:
其中,R1、R3、X的定义如前述式(IV)所示;
R4的定义如前述式(Ib)所示。
在一些实施方案中,本发明所述的化合物具有式(Vb)结构:
其中,R1、X、R4’、R5’、R6’、R7’、R8’的定义如前述式(V)所示。
在一些实施方案中,本发明所述的化合物具有式(VIb)结构
在一些实施方案中,本发明所述的化合物进一步包括式(Ib)、式(IIb)、式(IIIb)、式(IVb)、式(Vb)、式(VIb)结构的互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药。
在一些实施方案中,本发明的化合物包括如下具体化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
另一方面,本发明涉及式I化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药的制备方法,其特征在于,所述方法包括如下步骤:
方案1:
步骤1:M1与卤代试剂L1反应,得到中间体M2;
步骤2:中间体M2在碱性条件下与甘氨酸反应,得到式I化合物。
优选地,对于式II化合物,所述方法还可以通过如下方案2实现:
步骤1:M3与卤代试剂L1反应,得到中间体M4;
步骤2:中间体M4与对甲苯磺酰甘氨酸乙酯反应,得到中间体M5;
步骤3:中间体M5在碱性试剂A存在下发生关环反应,得到中间体M6;
步骤4:中间体M6与卤代试剂L1反应,得到中间体M7;
步骤5:中间体M7在碱性条件下与甘氨酸反应,得到式II化合物。
优选地,对于式IIIa化合物,所述方法还可以通过如下方案3实现:
步骤1:3-氨基巴豆酸甲酯与丙炔酸甲酯在碱性条件下进行反应,生成中间体M8,所采用的溶剂可选自DMSO、乙腈、二甲基甲酰胺等,优选为DMSO;
步骤2:中间体M8与卤代试剂L2反应,得到中间体M9;
步骤3:中间体M9与卤代试剂L1反应,得到中间体M10;
步骤4:中间体M10与对甲苯磺酰甘氨酸乙酯反应,得到中间体M11;
步骤5:中间体M11在碱性试剂A存在下发生关环反应,得到中间体M12;
步骤6:中间体M12与卤代试剂L1反应,得到中间体M13;
步骤7:中间体M13在碱性条件下与甘氨酸反应,得到化合物IIIa。
优选地,对于式IV化合物,所述方法还可以通过如下方案4实现:
步骤8:中间体M12与R3OH反应得到中间体M14,进一步的,所述反应条件可选为:与烷基醇钠在碱性条件或者与取代或未取代的芳香/芳杂环-OH类化合物在Pd催化下反应得到中间体M14;
步骤9:中间体M14与卤代试剂L1反应,得到中间体M15;
步骤10:中间体M15在碱性条件下与甘氨酸反应,得到式IV化合物。
其中所述中间体M12可以通过前述步骤获得,也可以通过商购。
例如中间体M12可以通过前述方案3中的步骤1-5获得。
上述方案中,优选地,X2选自卤素,例如F、Cl、Br、I;所述卤代试剂L1选自N-溴代丁二酰亚胺、N-氯代丁二酰亚胺、二溴海因、三氯异氰尿酸等;所述卤代试剂L2选自三氯氧磷、三溴氧磷、二氯亚砜等;所述碱性试剂A选自乙醇钠、甲醇钠、氢化钠、碳酸钾、碳酸铯,所述碱性条件进一步可选择前述定义的碱性试剂A;所述烷基醇钠选自C1-C4烷基醇钠,例如甲醇钠、乙醇钠。
上述方案中,所述对甲苯磺酰甘氨酸乙酯原料采用下述方法制备:将对甲苯磺酰卤、甘氨酸乙酯或其盐溶于溶剂,搅拌并滴加吡啶,至反应完毕。所述甘氨酸乙酯盐优选为甘氨酸乙酯盐酸盐,反应溶剂优选为二氯甲烷。
上述方案中,所述3-氨基巴豆酸甲酯与丙炔酸甲酯反应中,3-氨基巴豆酸甲酯与丙炔酸甲酯的摩尔比为1:2至2:1,优选为1:(1-1.2);所述反应过程包括:(1)加入3-氨基巴豆酸甲酯、丙炔酸甲酯、溶剂,加热反应6-12小时,优选反应8小时,反应温度为80-120℃;(2)反应完毕后,加入碱性试剂继续反应3-6小时,优选反应4小时,反应温度为80-120℃,所述碱性试剂优选为氢氧化钠,碱性试剂与3-氨基巴豆酸甲酯的摩尔比为1:2至2:1,更优选的为1:(1-1.2)。
上述方案中,所述中间体M8与卤代试剂L2的反应中,卤代试剂与M8的摩尔比为(2-8):1,优选为3-5:1,反应温度为80-120℃,优选为90-100℃,反应时间为3-8h,优选为4-5h。
上述方案中,所述中间体M3或M9与卤代试剂L1的反应中,优选加入偶氮二异丁腈或过氧化苯甲酰等引发剂,反应溶剂可以为卤代烃,优选为二氯甲烷,三氯甲烷,四氯化碳;所述M3或M9:L1:引发剂的摩尔比为1:(0.8-1.2):(0.1-0.5);优选为1:(0.9-1.1):(0.1-0.3);所述反应温度为60-100℃,优选为80-90℃,反应时间为6-10h,优选为7-8h。
上述方案中,所述中间体M4或M10与对甲苯磺酰甘氨酸乙酯反应中,M4或M10与对甲苯磺酰甘氨酸乙酯的摩尔比为1:2至2:1,优选为1:1,反应溶剂为醇类试剂,优选为甲醇、乙醇;反应进一步包括其后的关环反应,所述关环反应加入的碱性试剂与M4或M10的摩尔比为(1-6):1,优选为(2-5):1,优选分两次加入,所述关环反应优选在室温下进行;所述反应后处理步骤为:将反应液调节pH为6-8,优选为6-7,过滤,用水溶解滤饼,调节pH为6-7左右,抽滤得到产品。
上述方案中,所述中间体M12与R3OH反应过程中,Pd催化剂选自氯化钯,醋酸钯、三苯基膦钯等,优选为醋酸钯;所述反应中进一步加入碱性试剂,所述碱性试剂可选择前文定义的碱性试剂A,进一步优选为碳酸铯;所述反应中进一步加入膦配体,所述膦配体选自三苯基膦、1,1'-联萘-2,2'-双二苯膦、2-二环己基磷-2,4,6-三异丙基联苯等,优选为1,1'-联萘-2,2'-双二苯膦;所述反应的试剂优选为DMSO、乙腈、二甲基甲酰胺,反应温度为80-130℃,优选为90-120℃,更优选为110℃,反应时间为2-8小时,优选为3-6小时,更优选为4-5小时;所述反应进一步包括后处理:将反应液倒入水-有机溶剂混合溶液(优选为水-乙酸乙酯混合溶液),搅拌,过滤,滤液分相,水相用有机溶剂萃取,合并有机相过柱分离得到产品。
上述方案中,所述中间体M1、M6、M12或M14分别与卤代试剂L1的反应过程中,反应溶剂优选为DMSO、乙腈、二甲基甲酰胺,更优选的为乙腈;反应温度为60-100℃,优选为70-90℃,更优选为80℃,反应时间为1-6小时,优选为2-5小时,更优选的为4小时;所述反应过程进一步包括后处理:减压蒸除溶剂,残留物用有机溶剂(优选乙酸乙酯)溶解,水洗涤后过柱分离得到产品。
上述方案中,所述中间体M2、M7、M13或M15分别与甘氨酸反应过程中,反应溶剂优选为DMSO、乙腈、二甲基甲酰胺,更优选的为DMSO;反应温度为90-140℃,优选为100-130℃,更优选为110-120℃,反应时间为0.5-3小时,优选为1-2小时,更优选为1.5小时;所述反应过程进一步包括后处理:将反应液倒入水中,任选采用有机溶剂(优选为乙酸乙酯)洗涤,水相调节pH为1-3,优选为1-2,析出固体后,干燥得到产品。
在某些实施方案中,本发明还涉及中间体化合物M15:
其中,R1、R3、X定义同前。
在某些实施方案中,本发明还涉及化合物的药学上可接受制备的盐或溶剂化物的制备,其通过本领域常规的方法,将化合物与药学上可接受的盐或溶剂反应获得。
在某些实施方案中,本发明涉及化合物的前药制备。
本发明所述前药的制备方法包括:将式I、式II、式III/式IIIa、式IV、式V在碱性条件下与酯化试剂反应,得到前药化合物。
在某些实施方案中,所述前药制备包括由式I、式II、式III/式IIIa、式IV、式V在碱性条件下与酯化试剂反应,得到式Ib、式IIb、式IIIb、式IVb、式Vb、式VIb。所述方案进一步的示意如下:
式I(式II、式III/式IIIa、式IV、式V)式Ib(式IIb、式IIIb、式IVb、式Vb、式VIb)
上述方案中,所述碱性条件可选自甲胺、乙胺、二乙胺、三乙胺、二异丙基乙胺、咪唑、吡啶、2-甲基吡啶、DMAP、DBU等碱性试剂,优选为三乙胺和二异丙基乙胺;所述反应中的溶剂可包括DMF、DMSO、乙腈;所述酯化试剂与式I(式II、式III/式IIIa、式IV、式V)与碱性试剂的摩尔比为1:(1-2):(1-3),优选为1:(1-1.5):(1-2.5);所述反应温度为30-70℃,优选为40-60℃,更优选为50℃,反应时间为3-7小时,优选为4-6小时,更优选为5小时。
所述反应过程进一步包括后处理:将反应液倒入水和有机溶剂的混合液(优选为水和乙酸乙酯混合),搅拌,水相以有机溶剂萃取,合并有机相,减压浓缩,过柱分离得到产品。
在某些实施方案中,所述酯化反应优选为:
其中,Hal为卤素;所述卤素可选自F、Cl、Br、I;所述C1-C6烷基(C=O)OCH2-Hal进一步优选为C1-C4烷基(C=O)OCH2-Hal,更优选的为新戊酸氯甲酯。
另一方面,本发明涉及一种药物组合物,其包含本发明所述的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药。
在一些实施方案中,本发明所述的药物组合物,进一步包含治疗有效量的本发明所述的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药和药学上可接受的载体。
本发明所涉及的化合物及包含其的药物组合物具有HIF-PHD抑制活性,可用于防护、治疗或减轻患者的贫血、缺血、心绞痛、心肌梗塞、代谢障碍或伤口愈合疾病,所述缺血包括心肌局部缺血,所述的贫血包括急性或慢性肾病、感染、炎症、癌症、辐射、毒素、糖尿病或手术引起的贫血。所述感染包括艾滋病感染。
本发明所涉及的化合物及包含其的药物组合物还可以治疗或减轻患者的HIF相关和/或EPO相关的疾病或病症,如用于促进内源性EPO产生,用于稳定HIFα。
另一方面,本发明涉及本发明所述的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药在制备治疗或减轻患者的HIF相关和/或EPO相关的疾病或病症的药物中的用途。
另一方面,本发明涉及包含本发明所述的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药的药物组合物在制备治疗或减轻患者的HIF相关和/或EPO相关的疾病或病症的药物中的用途。
在一些实施方案中,所述的药物用于防护、治疗或减轻至少部分由HIF脯氨酰羟化酶介导的疾病或所述的药物用于治疗需要抑制HIF-PHD影响的疾病。
在一些实施方案中,所述的药物用于防护、治疗或减轻患者的贫血、缺血、心绞痛、心肌梗塞、代谢障碍或伤口愈合疾病,所述缺血包括心肌局部缺血,所述的贫血包括急性或慢性肾病、感染、炎症、癌症、辐射、毒素、糖尿病或手术引起的贫血。所述感染包括艾滋病感染。贫血病症可进一步与包括例如放射疗法、化学疗法、透析和手术等程序或治疗相关。另外贫血与血红蛋白和/或红细胞异常相关,例如小红细胞性贫血、低色素性贫血、再生障碍性贫血等障碍中所见的。
在一些实施方案中,所述的药物优选用于治疗肾性贫血疾病或病症。
在一些实施方案中,所述的药物用于治疗或减轻患者的HIF相关和/或EPO相关的疾病或病症,例如用于稳定HIFα;例如用于促进内源性EPO产生,所述个体经历预防性或同时进行特定治疗或手术,例如,正在用叠氮胸苷(齐多夫定)或其它逆转录抑制剂治疗的HIV感染贫血患者、接受含有顺铂或不含顺铂的化学疗法的贫血癌症患者、或计划进行手术的贫血或非贫血患者。另外,所述化合物可用于增加计划进行手术的贫血或非贫血患者的内源性EPO含量从而减少对异体输血的需要或促进手术前血液的储备。
在一些实施方案中,所述的药物为需增加铁摄取、铁利用等的药物。
本发明术语解释和详细说明
术语“任选”或“任选地”是指随后描述的事件或情形可以但不一定出现,并且该描述包括其中所述事件或情形出现的情况以及其中它不出现的情况。
术语“烷基”包括C1-C6烷基,优选为C1-C4烷基,其可以是直链烷基,也可以是支链烷基,进一步包括但不限于甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基。该术语还包括诸如烷氧基,卤素取代的烷基等所有涉及烷基基团中的烷基。
术语“芳香环”是指芳烃分子的芳核碳上去掉一个氢原子后,剩下一价基团,包括C6-C14芳香环,进一步包括但不限于苯基、萘基。
术语“芳杂环”或称为杂芳环,是指杂芳基化合物分子的芳核碳上去掉一个氢原子后,剩下一价基团,其中杂原子选自N,O或S,包括5-14元芳杂环,所述芳杂环可以是单环,也可以是稠环,并且可以是部分不饱和的。所述芳杂环还包括五元或六元含氮芳杂环。所述芳杂环包括但不限于吡啶、吡嗪、哒嗪、吡咯、咪唑、噻吩、呋喃。所述芳香环、芳杂环基团上进一步可被取代基取代。
术语“卤素”是指氟(F)、氯(Cl)、溴(Br)或碘(I)。
术语“被一个或多个取代基取代”包括但不限于被一个、二个、三个或四个取代基取代。
本发明所述化合物包含化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药;所述化合物进一步包含式I、式II、式III、式IIIa、式IV、式V、式Ib、式IIb、式IIIb、式IVb、式Vb、式VIb所示化合物。
本发明中化合物的盐,优选包括化合物的药学上可接受的盐,所述盐可以通过文献上提供的任何合适的方法制备得到,例如,使用无机酸,如盐酸,氢溴酸,硫酸,硝酸和磷酸;或者使用有机酸,如乙酸,马来酸,琥珀酸,扁桃酸,富马酸,丙二酸,丙酮酸,草酸,羟乙酸和水杨酸;吡喃糖酸,如葡萄糖醛酸和半乳糖醛酸;α-羟酸,如柠檬酸和酒石酸;氨基酸,如天门冬氨酸和谷氨酸;芳香族酸,如苯甲酸和肉桂酸;磺酸,如对甲苯磺酸,乙磺酸。
本发明中,溶剂化物是本发明的化合物的那些形式,其以固体或液体的状态通过与溶剂分子的配位作用形成配合物。水合物是溶剂化物的特定形式,其中配位作用是与水进行。在本发明中,优选的溶剂化物是水合物。
术语“前药”或称为“药物前体”,代表一个化合物在体内转化为前述通式或具体化合物所示的化合物。这样的转化受前体药物在血液中水解或在血液或组织中经酶转化为母体结构的影响。本发明前药可以是酯,在现有的发明中酯可以作为前药的有苯酯类,脂肪族(C1-24)酯类,酰氧基甲基酯类,碳酸酯,氨基甲酸酯类和氨基酸酯类。例如本发明里的一个化合物包含羟基/羧基,即可以将其酰化得到前体药物形式的化合物。其他的前药形式包括磷酸酯,如这些磷酸酯类化合物是经母体上的羟基磷酸化得到的。
本发明中,可利用药物组合物通过向有此需要的患者给药来实现期望的药理学作用。就本发明的目的而言,患者是需要治疗具体病症或疾病的包括人在内的哺乳动物。
本发明中,药学上可接受的载体可以是这样的载体,其在与活性成分的有效活性一致的浓度下对患者相对无毒且无害,以至于由所述载体引起的任何副作用不会破坏所述活性成分的有益作用。化合物或其药学上可接受的盐的药学有效量优选是对正在治疗的具体病况产生结果或者产生影响的量。可使用包括速释、缓释和定时释放制剂在内的任意有效的常规剂量单位形式,将本发明的化合物与本领域公知的药学上可接受的载体一起以如下方式给药:口服、肠胃外、局部、鼻腔、眼部、舌下、直肠、阴道给药等。
对于口服给药,可将本发明化合物或其药学上可接受的盐配制成固体或液体制剂,例如胶囊剂、丸剂、片剂、含锭剂(troche)、锭剂(lozenge)、熔胶剂(melt)、散剂、溶液剂、混悬剂或乳剂,并且可根据本领域已知的用于制备药物组合物的方法来制备。固体单位剂型可为胶囊剂,其可为普通的硬胶囊型或软胶囊型,包含例如表面活性剂、润滑剂和惰性填充剂(例如乳糖、蔗糖、磷酸钙和玉米淀粉)。
本发明中,还可以将本发明的化合物或其药学上可接受的盐和常规片剂基质(例如乳糖、蔗糖和玉米淀粉)一起并与如下物质组合压制成片剂:粘合剂(例如阿拉伯胶、玉米淀粉或明胶)、用于辅助给药后片剂的分解和溶出的崩解剂(例如土豆淀粉、藻酸、玉米淀粉和瓜尔胶、黄蓍树胶、阿拉伯胶)、用于提高片剂制粒的流动性并且防止片剂材料与片剂模具和冲头的表面粘附的润滑剂(例如滑石、硬脂酸或硬脂酸镁、硬脂酸钙或硬脂酸锌)、染料、着色剂,以及用于改善片剂的感官性质并使它们更容易被患者接受的调味剂(例如薄荷油、冬青油或樱桃香精)。用于口服液体剂型的适合的赋形剂包括磷酸二钙和稀释剂,例如水和醇(例如乙醇、苯甲醇和聚乙烯醇),添加或不添加药学上可接受的表面活性剂、助悬剂或乳化剂。可以存在各种其它物质作为包衣或者用于改变剂量单位的物理形式。例如可用虫胶、糖或二者将片剂、丸剂或胶囊剂包衣。可分散的粉末和颗粒适合用于制备水性混悬剂。它们提供与分散剂或润湿剂、助悬剂以及一种或多种防腐剂混合的活性成分。适合的分散剂或润湿剂和助悬剂的实例为上文提及的那些。还可存在另外的赋形剂,例如上文所述的那些调味剂和着色剂。
本发明的药物组合物还可为水包油乳剂的形式。油相可为植物油,例如液体石蜡或植物油的混合物。适合的乳化剂可为(1)天然树胶,例如阿拉伯树胶和黄蓍树胶,(2)天然磷脂,例如大豆磷脂和卵磷脂,(3)衍生自脂肪酸和己糖醇酐的酯或偏酯,例如脱水山梨糖醇单油酸酯,(4)所述偏酯与环氧乙烷的缩合产物,例如聚氧乙烯山梨糖醇酐单油酸酯。所述乳剂还可包含甜味剂和调味剂。可通过将所述活性成分悬浮在植物油(例如花生油、橄榄油、芝麻油或椰子油)中或者悬浮在矿物油(例如液体石蜡)中来配制油性混悬剂。所述油性混悬剂可包含增稠剂,例如蜂蜡、硬石蜡或鲸蜡醇。所述混悬剂还可包含一种或多种防腐剂,例如对羟基苯甲酸乙酯或对羟基苯甲酸正丙酯;一种或多种着色剂;一种或多种调味剂;以及一种或多种甜味剂,例如蔗糖或糖精。可用甜味剂(例如甘油、丙二醇、山梨糖醇或蔗糖)来配制糖浆剂和酏剂。此类制剂还可包含缓和剂和防腐剂(例如尼泊金甲酯和尼泊金丙酯)以及调味剂和着色剂。
还可将本发明的化合物以所述化合物的注射剂量进行肠胃外给药,即皮下、静脉内、眼内、滑膜内、肌内或腹膜内给药,所述注射剂量优选在含有药物载体的生理学可接受的稀释剂中,所述药物载体可为无菌液体或液体的混合物,所述液体例如水,盐水,葡萄糖水溶液和相关的糖溶液,醇例如乙醇、异丙醇或十六醇,二醇例如丙二醇或聚乙二醇,甘油缩酮例如2,2-二甲基-1,1-二氧戊环-4-甲醇,醚例如聚乙二醇400(PEG400),油,脂肪酸,脂肪酸酯或脂肪酸甘油酯或乙酰化脂肪酸甘油酯,所述稀释剂添加或不添加有药学上可接受的表面活性剂,例如肥皂或洗涤剂,助悬剂例如果胶、卡波姆、甲基纤维素、羟丙甲纤维素或羧甲基纤维素,或乳化剂和其它药学辅剂。
可用于本发明的肠胃外制剂中的示例性的油是那些源于石油、动物、植物或合成来源的油,例如花生油、大豆油、芝麻油、棉籽油、玉米油、橄榄油、凡士林油和矿物油。适合的脂肪酸包括油酸、硬脂酸、异硬脂酸和肉豆蔻酸。适合的脂肪酸酯是例如油酸乙酯和肉豆蔻酸异丙酯。适合的肥皂包括脂肪酸碱金属盐、铵盐和三乙醇胺盐,并且适合的洗涤剂包括阳离子洗涤剂,例如二甲基二烷基卤化铵、烷基卤化吡啶鎓和烷基胺乙酸盐;阴离子洗涤剂例如烷基磺酸盐、芳基磺酸盐和烯烃磺酸盐、烷基硫酸盐和烷基磺基琥珀酸盐、烯烃硫酸盐和烯烃磺基琥珀酸盐、醚硫酸盐和醚磺基琥珀酸盐以及单酸甘油酯硫酸盐和单酸甘油酯磺基琥珀酸盐;非离子型洗涤剂,例如脂肪胺氧化物、脂肪酸烷醇酰胺以及聚(氧乙烯-氧丙烯)、环氧乙烷共聚物或环氧丙烷共聚物;以及两性洗涤剂,例如烷基-β-氨基丙酸盐和2-烷基咪唑啉季铵盐,以及其混合物。
本发明的肠胃外组合物通常会在溶液中包含约0.5重量%-约25重量%的所述活性成分。还可有利地使用防腐剂和缓冲剂。为了最小化或消除对注射部位的刺激,此类组合物可包含亲水-亲脂平衡(HLB)优选为约12-约17的非离子表面活性剂。此类制剂中表面活性剂的量优选为约5重量%-约15重量%。所述表面活性剂可为具有以上HLB的单一组分,或者为两种或更多种具有期望的HLB的组分的混合物。用于肠胃外制剂的示例性表面活性剂是聚乙烯脱水山梨糖醇脂肪酸酯类,例如脱水山梨糖醇单油酸酯,以及环氧乙烷与疏水性基质的高分子量加合物,所述疏水性基质由环氧丙烷和丙二醇缩合形成。
所述药物组合物可为注射用无菌水性混悬剂的形式。可根据已知的方法使用如下物质配制此类混悬剂:适合的分散剂或润湿剂和助悬剂,例如羧甲基纤维素钠、甲基纤维素、羟丙甲纤维素、藻酸钠、聚乙烯吡咯烷酮、黄蓍树胶和阿拉伯树胶;分散剂或润湿剂,其可为天然磷脂(例如卵磷脂)、氧化烯与脂肪酸的缩合产物(例如聚氧乙烯硬脂酸酯)、环氧乙烷与长链脂肪醇的缩合产物(例如十七乙烯氧基鲸蜡醇)、环氧乙烷与衍生自脂肪酸和己糖醇的偏酯的缩合产物(例如聚氧乙烯山梨糖醇单油酸酯)、或环氧乙烷与衍生自脂肪酸和己糖醇酐的偏酯的缩合产物(例如聚氧乙烯脱水山梨糖醇单油酸酯)。
无菌注射制剂还可为在无毒的肠胃外可接受的稀释剂或溶剂中的注射用无菌溶液剂或混悬剂。可使用的稀释剂和溶剂为例如水、林格溶液、等渗氯化钠溶液和等渗葡萄糖溶液。另外,将无菌不挥发油常规性用作溶剂或悬浮介质。就此而言,可使用任何刺激性小的不挥发油,包括合成的单酸甘油酯或甘油二酯。另外,可将脂肪酸(例如油酸)用于注射剂的制备中。
还可将本发明的组合物以用于药物的直肠给药的栓剂的形式给药。可通过将药物与在常温下为固体但是在直肠温度下为液体并且因此可在直肠中溶化而释放所述药物的适合的无刺激性的赋形剂混合来制备这些组合物。此类物质是例如可可脂和聚乙二醇。
用于肠胃外给药的控释制剂包括本领域已知的脂质体微球、聚合物微球和聚合物凝胶制剂。
可能需要或必须通过机械递送装置将所述药物组合物递送至患者。用于递送药剂的机械递送装置的构造和用途是本领域公知的。例如将药物直接给药至脑的直接技术通常涉及将药物递送导管置入患者的脑室系统以绕过血脑屏障。
可将本发明的化合物作为单一药剂给药或者与一种或多种其它药剂组合给药,其中所述组合不会引起不可接受的不良反应。所述组合中合适的活性物质包括:ACE抑制剂,血管紧张素II受体拮抗剂,β受体阻滞剂,钙拮抗剂,PDE抑制剂,盐皮质激素受体拮抗剂,利尿剂,阿斯匹林,铁添加物,维生素B12和叶酸添加物,抑制素,洋地黄衍生物(地高辛),肿瘤化疗药物和抗生素。
“促红细胞生成素(EPO)相关疾病”是指与内源性红细胞生成素低于正常、异常或不当调节相关的任何病症。EPO相关病症包括其中EPO含量增加将提供治疗益处的任何病症。EPO是随HIFα而产生的一种自然存在的激素,其剌激运载氧气贯穿全身的红细胞(红血球)的产生。EPO相关疾病包括,但不限于,贫血,包括与糖尿病、溃疡、肾衰竭、癌症、感染、透析、手术和化学疗法相关的贫血;局部缺血和缺氧的病况,例如,动脉闭塞性疾病、心绞痛、肠梗塞、肺梗塞、脑局部缺血和心肌梗塞。
“HIF相关疾病”是指与HIF低于正常的、异常的或不当调节相关的任何病症。HIF相关病症包括HIF水平的提高将带来有益疗效的任何病症。HIF相关疾病包括,但并不限于,心脏病、中风、外周血管疾病、溃疡、烧伤、慢性伤口、慢性局部缺血、肺栓塞、缺血-再灌注损伤、炎症和贫血等。
HIF相关和/或EPO相关的疾病包括,但并不限于,贫血、缺血、血管疾病、心绞痛、心肌局部缺血、心肌梗塞、代谢障碍或伤口愈合等。
“至少部分由HIF脯氨酰羟化酶(HIF-PHD)介导的疾病”可以与“HIF脯氨酰羟化酶相关疾病”交替使用,是指由于HIF-PHD异常引起的任何病症,包括由于HIF-PHD异常引起的HIF相关疾病。HIF-PHD相关疾病包括,但并不限于,贫血和局部缺血等。
“贫血”是指导致血液中氧含量降低的血红蛋白或红细胞的任何异常或不足。可由各种病症引起,例如急性或慢性肾病、感染、炎症、癌症、辐射、毒素、糖尿病和手术。感染可能由例如病毒、细菌和/或寄生虫等引起。炎症可能由感染或自身免疫失调例如类风湿性关节炎等引起。贫血也可能由例如胃溃疡、十二指肠溃疡、痔疮、胃癌或大肠癌、外伤、损伤、手术程序等所引起的失血有关。贫血的形成还可能与放射疗法、化学疗法和肾透析有关。贫血还与接受用叠氮胸苷(齐多夫定)或其它逆转录酶抑制剂治疗的HIV感染患者有关、并且可在接受化学疗法(例如含有顺铂或不含顺铂的化学疗法)的癌症患者体内发展。再生障碍性贫血和骨髓增生异常综合症是与导致红细胞产生减少的骨髓衰竭相关的疾病。此外,贫血可由血红蛋白或红细胞缺陷或异常引起,例如包括小红细胞性贫血、低色素性贫血等障碍。贫血可由铁转运、加工和利用方面的障碍引起,例如铁粒幼细胞性贫血(sideroblasticanemia)等。
本发明的有益效果:
(1)本发明提供了一类结构新颖的小分子HIF-PHD抑制剂,通过抑制HIF-PHD,使缺氧诱导因子HIF-α稳定,促进EPO的生成。本发明于药理方面进行了网织红测定、体内外EPO检测及体外HIF蛋白检测,从结果看给予本化合物后HIF蛋白表达增加,促红细胞生成素EPO增加,体内实验网织红个数增加。因而,本发明化合物适应于多种HIF相关和/或EPO相关的疾病或病症,尤其适用于肾性贫血疾病或病症,因为肾性贫血原因主要是红细胞生成减少,红细胞寿命缩短或缺失造成;
(2)本发明化合物在具有较高的HIF-PHD抑制活性,显著的升高EPO作用的同时,毒性低,药物安全性好,如生物活性结果显示,本发明化合物均对hERG通道没有明显的抑制作用;
(3)本发明化合物相较于FG-4592、BAY85-3934对比药物,整体上体现出改善的生物活性,尤其是,化合物Link-118、Link-121、Link-124、Link-129、Link-130等升高EPO作用显著高于对比药物。
具体实施方式
下文将结合具体实施例对本发明的制备方法做更进一步的详细说明。应当理解,下列实施例仅为示例性地说明和解释本发明,而不应被解释为对本发明保护范围的限制。凡基于本发明上述内容所实现的技术均涵盖在本发明旨在保护的范围内。下述实施例中如无特殊说明,所有的温度定为摄氏度。如无特殊说明,原料化合物是通过本文中所述的方法合成的或者是市售可得的,并且购自以下厂家:百灵威、北京伊诺凯科技有限公司、阿拉丁试剂、阿法埃莎、韶远化学科技有限公司等。
中间体:2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
步骤1:2-(4-甲基苯基磺酰氨基)乙酸乙酯的制备
在2000mL的反应瓶中,加入对甲苯磺酰氯(190.65g,1.0mol),甘氨酸乙酯盐酸盐(142.37g,1.02mol),二氯甲烷1000mL,室温搅拌,然后滴加吡啶(174.2,2.5mol),滴毕,室温搅拌反应45小时。向反应瓶中加入纯化水,分离有机相。减压浓缩,得到固体。真空干燥恒重,得到2-(4-甲基苯基磺酰氨基)乙酸乙酯200g,77.7%。
步骤2:2-甲基-6-羟基烟酸甲酯的制备
在1000mL反应瓶中,加入3-氨基巴豆酸甲酯(127.5g,1.11mol),丙炔酸甲酯(97.8g,1.17mol),二甲基亚砜300mL,加热至100℃反应8小时。在反应液中加入氢氧化钠(44.3g,1.11mol),继续100℃反应4小时。降温,将反应液缓慢倒入1000mL 1N的盐酸中,析出大量的黄色固体,用碳酸钠调节至中性,搅拌1小时,抽滤,所得固体真空干燥恒重,得到6-羟基-2-甲基烟酸甲酯140g,75.7%。
步骤3:2-甲基-6-氯烟酸甲酯的制备
在500mL反应瓶中依次加入6-羟基-2-甲基烟酸甲酯(140g,0.84mol),三氯氧磷300mL,加热至100℃反应4小时。减压浓缩,残留物缓慢倒入1000mL冰水中,析出大量的灰黑色固体,搅拌1小时,抽滤,滤饼室温晾干。得到6-氯-2-甲基烟酸甲酯153g,98.7%。
步骤4:2-溴甲基-6-氯烟酸甲酯的制备
在1000mL的反应瓶中,加入2-甲基-6-氯烟酸甲酯(153g,0.82mol),N-溴代琥珀酰亚胺(161g,0.90mol),过氧化苯甲酰(40g,0.16mol),四氯化碳750mL,加热至80℃反应8小时。减压浓缩,向残留物中加入石油醚100mL,析出浅黄色固体,搅拌1小时,抽滤,真空干燥恒重,得到2-溴甲基-6-氯烟酸甲酯176g,80.7%。
步骤5:2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯
在2000mL的反应瓶中,加入2-溴甲基-6-氯烟酸甲酯(176g,0.67mol),2-(4-甲基苯基磺酰氨基)乙酸乙酯(171g,0.67mol),无水乙醇1500mL,室温搅拌,缓慢加入乙醇钠(90g,1.34mol),加毕,室温搅拌反应24小时。将反应液用浓盐酸调节pH为6~7,过滤,滤饼用纯化水洗涤,抽滤,得到黄色固体2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯40g,23.8%。
1H NMR(600MHz,DMSO-d6)δ:1.385-1.409(t,3H),4.453-4.488(m,2H),7.934-7.948(d,J=8.4Hz,1H),8.727-8.741(d,J=8.4Hz,1H),8.902(s,1H),11.656(s,1H).
实施例1(Link-118):2-(2-苯氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-苯氧基-5-羟基-1,7萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(1.5g,5.94mmol),苯酚(0.61g,6.53mmol),醋酸钯(0.21g,0.95mmol),1,1’-联萘-2,2’-双苯基膦(0.74g,1.19mmol),碳酸铯(3.87g,11.88mmol),50mL二甲基亚砜,加热至110℃,反应4小时。将反应液倒入150mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩后得到2-苯氧基-5-羟基-1,7萘啶-6-羧酸乙酯0.5g,27.2%。
步骤2:2-苯氧基-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯的制备
在50mL的反应瓶中,加入2-苯氧基-5-羟基-1,7萘啶-6-羧酸乙酯(0.5g,1.61mmol),N-氯代丁二酰亚胺(0.23g,1.93mmol),乙腈10mL,加热至80℃,反应4小时。减压浓缩,残留物柱层析分离,V石油醚/V乙酸乙酯=10/1洗脱,浓缩得到类白色固体2-苯氧基-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯0.34g,60.7%。
步骤3:2-(2-苯氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在50mL的反应瓶中加入2-苯氧基-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯(0.34g,0.99mmol),甘氨酸(0.33g,2.97mmol),碳酸钾(0.4g,2.97mmol),二甲基亚砜10mL,加热至120℃反应1.5小时。将反应液倒入50mL纯化水中,用浓盐酸调节pH为1~2,析出大量固体,搅拌30分钟,抽滤,滤饼用纯化水洗涤,真空干燥恒重,得到类白色固体2-(2-苯氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸220mg,59.5%。
实施例2(Link-119):2-(2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(4-甲氧基苯氧基)-5-羟基-1,7萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(1.5g,5.94mmol),对羟基苯甲醚(0.81g,6.53mmol),醋酸钯(0.21g,0.95mmol),1,1’-联萘-2,2’-双苯基膦(0.74g,1.19mmol),碳酸铯(3.87g,11.88mmol),50mL二甲基亚砜,加热至110℃,反应4小时。将反应液倒入150mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩后得到2-(4-甲氧基苯氧基)-5-羟基-1,7萘啶-6-羧酸乙酯0.72g,35.6%。
步骤2:2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯的制备
在100mL的反应瓶中,加入2-(4-甲氧基苯氧基)-5-羟基-1,7萘啶-6-羧酸乙酯(0.72g,2.12mmol),N-氯代丁二酰亚胺(0.31g,2.23mmol),乙腈50mL,加热至80℃,反应4小时。减压浓缩,残留物柱层析分离,V石油醚/V乙酸乙酯=10/1洗脱,浓缩得到固体2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯0.2g,25.3%。
步骤3:2-(2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在50mL的反应瓶中加入2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯(0.20g,0.53mmol),甘氨酸(0.12g,1.59mmol),碳酸钾(0.22g,1.59mmol),二甲基亚砜30mL,加热至120℃反应1.5小时。将反应液倒入90mL纯化水中,析出黄色固体,用浓盐酸调节pH为1~2,搅拌30分钟,抽滤,真空干燥8h,得到灰白色固体2-(2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸170mg,77.3%。
实施例3(Link-120):2-(2-(吡啶-3-基氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(吡啶-3-基氧基)-5-羟基-1,7萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(1.5g,5.94mmol),3-羟基吡啶(0.62g,6.53mmol),醋酸钯(0.21g,0.95mmol),1,1’-联萘-2,2’-双苯基膦(0.74g,1.19mmol),碳酸铯(3.87g,11.88mmol),50mL二甲基亚砜,加热至110℃,反应4小时。将反应液倒入150mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤饼用乙酸乙酯洗涤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩后得到2-(吡啶-3-基氧基)-5-羟基-1,7萘啶-6-羧酸乙酯0.48g,25.9%。
步骤2:2-(吡啶-3-基氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯的制备
在50mL的反应瓶中,加入2-(吡啶-3-基氧基)-5-羟基-1,7萘啶-6-羧酸乙酯(0.48g,1.54mmol),N-氯代丁二酰亚胺(0.23g,1.69mmol),乙腈10mL,加热至85℃,反应8小时。减压浓缩,残留物柱层析分离,V石油醚/V乙酸乙酯=10/1洗脱,浓缩得到白色固体2-(吡啶-3-基氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯0.33g,62.3%。
步骤3:2-(2-(吡啶-3-基氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在50mL的反应瓶中加入2-(吡啶-3-基氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯(0.33g,0.95mmol),甘氨酸(0.22g,2.85mmol),碳酸钾(0.40g,2.85mmol),二甲基亚砜10mL,加热至120℃反应1.5小时。将反应液倒入30mL纯化水中,用浓盐酸调节pH为1~2,析出固体,搅拌30分钟,抽滤,所得固体真空干燥恒重,得到浅黄色固体2-(2-(吡啶-3-基氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸18mg,5.0%。
实施例4(Link-121):2-(2-苯氧基-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-苯氧基-5-羟基-1,7萘啶-6-羧酸乙酯的制备
在50mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(1.0g,3.96mmol),苯酚(0.39g,4.16mmol),醋酸钯(0.14g,0.63mmol),1,1’-联萘-2,2’-双苯基膦(0.5g,0.79mmol),碳酸铯(2.58g,7.92mmol),10mL二甲基亚砜,加热至110℃,反应4小时。将反应液倒入30mL纯化水和20mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用20mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩后得到2-苯氧基-5-羟基-1,7萘啶-6-羧酸乙酯0.2g,16.3%。
步骤2:2-苯氧基-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯的制备
在10mL的反应瓶中,加入2-苯氧基-5-羟基-1,7萘啶-6-羧酸乙酯(0.2g,0.64mmol),N-溴代琥珀酰亚胺(0.12g,0.67mmol),乙腈4mL,加热至80℃,反应4小时。减压浓缩,残留物柱层析分离,V石油醚/V乙酸乙酯=10/1洗脱,浓缩得到类白色固体2-苯氧基-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯0.13g,52.0%。
步骤3:2-(2-苯氧基-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
在25mL的反应瓶中加入2-苯氧基-5-羟基-8-溴-1,7-萘啶-6羧酸乙酯(0.13g,0.33mmol),甘氨酸(0.10g,0.99mmol),碳酸钾(0.19g,0.99mmol),二甲基亚砜7mL,加热至120℃反应1.5小时。将反应液倒入30mL纯化水中,用浓盐酸调节pH为1~2,析出大量固体,搅拌30分钟,抽滤,所得固体真空干燥恒重,得到类白色固体2-(2-苯氧基-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸110mg,78.6%。
实施例5(Link-122):2-(2,8-二氯-5-羟基-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2,8-二氯-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在50mL反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(1.0g,3.96mmol),N-氯代丁二酰亚胺(0.55g,4.16mmol),乙腈20mL,加热至80℃反应2小时。减压浓缩至有大量固体析出,过滤,得到白色固体2,8-二氯-5-羟基-1,7-萘啶-6-羧酸乙酯0.68g,59.6%。
步骤2:2-(2,8-二氯-5-羟基-1,7-萘啶-6-甲酰氨基)乙酸的制备
在50mL反应瓶中,加入2,8-二氯-5-羟基-1,7-萘啶-6-羧酸乙酯(0.68g,2.40mmol),甘氨酸(0.53g,7.20mmol),碳酸钾(0.98g,7.20mmol),二甲基亚砜30mL,加热至120℃,反应1.5小时。将反应液倒入90mL纯化水中,用浓盐酸调节pH为1~2,析出固体,搅拌30分钟,抽滤,所得固体真空干燥恒重,得到2-(2,8-二氯-5-羟基-1,7-萘啶-6-甲酰氨基)乙酸0.64g,84.2%。
实施例6(Link-124):2-(2-(2-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(2-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(4.1g,16.23mmol),2-氯苯酚(2.19g,17.04mmol),醋酸钯(0.29g,1.30mmol),1,1’-联萘-2,2’-双苯基膦(1.01g,1.62mmol),碳酸铯(10.57g,32.46mmol),41mL二甲基亚砜,加热至110℃,反应12小时。将反应液倒入120mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=7/1洗脱,浓缩后得到2-(2-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯1.4g,25.0%。
步骤2:2-(2-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯的制备
在50mL反应瓶中,加入2-(2-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯(0.9g,2.61mmol),N-氯代丁二酰亚胺(0.38g,2.87mmol),乙腈27mL,加热至80℃,反应2小时。降温,减压浓缩至有大量白色固体析出,停止浓缩,降温析晶1小时,抽滤,得到固体2-(2-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯0.75g,75.8%。
步骤3:2-(2-(2-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在50mL反应瓶中,加入2-(2-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯(0.75g,1.98mmol),甘氨酸(0.44g,5.94mmol),碳酸钾(0.81g,5.94mmol),二甲基亚砜15mL,加热至110℃,反应2小时。将反应液倒入150mL纯化水中,用浓盐酸调节pH为1~2,有大量白色固体析出,搅拌30分钟,抽滤,所得固体真空干燥恒重,得到2-(2-(2-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸0.76g,93.8%。
实施例7(Link-125):2-(2-(2-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(2-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(4.1g,16.23mmol),2-氯苯酚(2.19g,17.04mmol),醋酸钯(0.29g,1.30mmol),1,1’-联萘-2,2’-双苯基膦(1.01g,1.62mmol),碳酸铯(10.57g,32.46mmol),41mL二甲基亚砜,加热至110℃,反应12小时。将反应液倒入120mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=7/1洗脱,浓缩后得到2-(2-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯1.4g,25.0%。
步骤2:2-(2-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯的制备
在50mL反应瓶中,加入2-(2-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯(0.5g,1.45mmol),N-溴代琥珀酰亚胺(0.27g,1.52mmol),乙腈10mL,加热至80℃,反应2小时。降温,减压浓缩至有大量白色固体析出,停止浓缩,降温析晶1小时,抽滤,得到固体2-(2-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯0.42g,68.9%。
步骤3:2-(2-(2-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
在50mL反应瓶中,加入2-(2-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯(0.42g,0.99mmol),甘氨酸(0.22g,2.97mmol),碳酸钾(0.41g,2.97mmol),二甲基亚砜10mL,加热至110℃,反应2小时。将反应液倒入100mL纯化水中,用浓盐酸调节pH为1~2,有大量白色固体析出,搅拌30分钟,抽滤,所得固体真空干燥恒重,得到2-(2-(2-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸041g,91.1%。
实施例8(Link-126):2-(2-(3-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(3-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(3.0g,11.87mmol),3-氯苯酚(1.6g,12.46mmol),醋酸钯(0.22g,0.95mmol),1,1’-联萘-2,2’-双苯基膦(0.74g,1.19mmol),碳酸铯(7.74g,23.74mmol),30mL二甲基亚砜,加热至110℃,反应12小时。将反应液倒入100mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩后得到2-(3-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯1.9g,46.5%。
步骤2:2-(3-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯的制备
在50mL反应瓶中,加入2-(3-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯(0.7g,2.03mmol),N-氯代丁二酰亚胺(0.3g,2.23mmol),乙腈15mL,加热至80℃,反应3小时。降温,有大量固体析出,搅拌析晶1小时,抽滤,得到白色固体2-(3-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯0.58g,75.3%。
步骤3:2-(2-(3-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在50mL反应瓶中,加入2-(3-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯(0.58g,1.53mmol),甘氨酸(0.34g,4.59mmol),碳酸钾(0.63g,4.59mmol),二甲基亚砜10mL,加热至110℃,反应2小时。将反应液倒入100mL纯化水中,用浓盐酸调节pH为1~2,有大量白色固体析出,搅拌30分钟,抽滤,所得固体真空干燥恒重,得到2-(2-(3-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸0.5g,80.6%。
实施例9(Link-127):2-(2-(3-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(3-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(3.0g,11.87mmol),3-氯苯酚(1.6g,12.46mmol),醋酸钯(0.22g,0.95mmol),1,1’-联萘-2,2’-双苯基膦(0.74g,1.19mmol),碳酸铯(7.74g,23.74mmol),30mL二甲基亚砜,加热至110℃,反应12小时。将反应液倒入100mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩后得到2-(3-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯1.9g,46.5%。
步骤2:2-(3-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯的制备
在50mL反应瓶中,加入2-(3-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯(1.17g,3.39mmol),N-溴代琥珀酰亚胺(0.66g,3.73mmol),乙腈25mL,加热至80℃,反应2.5小时。降温,减压浓缩至有大量固体析出,停止浓缩,搅拌析晶1小时,抽滤,得到黄色固体2-(3-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯1.08g,75.0%。
步骤3:2-(2-(3-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
在50mL反应瓶中,加入2-(3-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯(1.08g,2.55mmol),甘氨酸(0.58g,7.65mmol),碳酸钾(1.06g,7.65mmol),二甲基亚砜25mL,加热至110℃,反应2小时。将反应液倒入150mL纯化水中,用浓盐酸调节pH为1~2,有大量白色固体析出,搅拌30分钟,抽滤,所得固体真空干燥恒重,得到2-(2-(3-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸0.69g,60.0%。
实施例10(Link-128):2-(2-(4-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(4-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(3.0g,11.87mmol),4-氯苯酚(1.6g,12.46mmol),醋酸钯(0.22g,0.95mmol),1,1’-联萘-2,2’-双苯基膦(0.74g,1.19mmol),碳酸铯(7.74g,23.74mmol),30mL二甲基亚砜,加热至110℃,反应12小时。将反应液倒入100mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=7/1洗脱,浓缩后得到2-(4-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯1.08g,26.4%。
步骤2:2-(4-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯的制备
在50mL反应瓶中,加入2-(4-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯(0.5g,1.45mmol),N-氯代丁二酰亚胺(0.21g,1.60mmol),乙腈10mL,加热至80℃,反应3小时。降温,有大量固体析出,搅拌析晶1小时,抽滤,得到黄色固体2-(4-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯0.25g,45.5%。
步骤3:2-(2-(4-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在25mL反应瓶中,加入2-(4-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯(0.25g,0.66mmol),甘氨酸(0.15g,1.98mmol),碳酸钾(0.27g,1.98mmol),二甲基亚砜5mL,加热至110℃,反应3小时。将反应液倒入50mL纯化水中,用浓盐酸调节pH为1~2,有大量白色固体析出,搅拌30分钟,抽滤,所得固体真空干燥恒重,得到2-(2-(4-氯苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸0.25g,92.6%。
实施例11(Link-129):2-(2-(4-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(4-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(3.0g,11.87mmol),4-氯苯酚(1.6g,12.46mmol),醋酸钯(0.22g,0.95mmol),1,1’-联萘-2,2’-双苯基膦(0.74g,1.19mmol),碳酸铯(7.74g,23.74mmol),30mL二甲基亚砜,加热至110℃,反应12小时。将反应液倒入100mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,,柱层析分离,V石油醚/V乙酸乙酯=7/1洗脱,浓缩后得到2-(4-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯1.08g,26.4%。
步骤2:2-(4-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯的制备
在25mL反应瓶中,加入2-(4-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯(0.55g,1.60mmol),N-溴代琥珀酰亚胺(0.31g,1.76mmol),乙腈5mL,加热至80℃,反应2小时。降温,有大量固体析出,搅拌析晶1小时,抽滤,得到白色固体2-(4-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯0.4g,58.8%。
步骤3:2-(2-(4-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
在25mL反应瓶中,加入2-(4-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯(0.4g,0.94mmol),甘氨酸(0.21g,2.82mmol),碳酸钾(0.39g,2.82mmol),二甲基亚砜5mL,加热至110℃,反应3小时。将反应液倒入50mL纯化水中,用浓盐酸调节pH为1~2,有大量白色固体析出,搅拌30分钟,抽滤,真空干燥恒重,得到2-(2-(4-氯苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸(0.4g,93.0%)。
实施例12(Link-130):2-(2-(4-氟苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(4-氟苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(5.0g,19.79mmol),4-氟苯酚(2.44g,21.77mmol),醋酸钯(0.71g,3.17mmol),1,1’-联萘-2,2’-双苯基膦(2.46g,3.96mmol),碳酸铯(12.89g,39.58mmol),25mL二甲基亚砜,加热至110℃,反应3小时。将反应液倒入100mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩后得到2-(4-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯1.2g,18.46%。
步骤2:2-(4-氟苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯的制备
在25mL反应瓶中,加入2-(4-氟苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯(0.6g,1.83mmol),N-氯代丁二酰亚胺(0.27g,2.01mmol),乙腈12mL,加热至80℃,反应3小时。降温,减压浓缩,有大量固体析出,停止浓缩,冷藏析晶过夜。抽滤,得到白色固体2-(4-氟苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯0.35g,53.03%。
步骤3:2-(2-(4-氟苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在25mL反应瓶中,加入2-(4-氟苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯(0.35g,0.96mmol),甘氨酸(0.22g,2.88mmol),碳酸钾(0.4g,2.88mmol),二甲基亚砜7mL,加热至110℃,反应3小时。将反应液倒入35mL纯化水中,用浓盐酸调节pH为2~3,有固体析出,室温搅拌1小时,抽滤,真空干燥恒重,得到2-(2-(4-氟苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸(0.3g,78.95%)。
实施例13(Link-131):2-(2-(4-氟苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(4-氟苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯的制备
在100mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(5.0g,19.79mmol),4-氟苯酚(2.44g,21.77mmol),醋酸钯(0.71g,3.17mmol),1,1’-联萘-2,2’-双苯基膦(2.46g,3.96mmol),碳酸铯(12.89g,39.58mmol),25mL二甲基亚砜,加热至110℃,反应3小时。将反应液倒入100mL纯化水和50mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩后得到2-(4-氯苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯1.2g,18.46%。
步骤2:2-(4-氟苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯的制备
在25mL反应瓶中,加入2-(4-氟苯氧基)-5-羟基-1,7-萘啶-6-羧酸乙酯(0.58g,1.77mmol),N-溴代琥珀酰亚胺(0.35g,1.95mmol),乙腈12mL,加热至80℃,反应2小时。降温,反应液直接柱层析分离,V石油醚/V乙酸乙酯=6/1洗脱,浓缩得到白色固体2-(4-氟苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯0.15g,20.83%。
步骤3:2-(2-(4-氟苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸的制备
在25mL反应瓶中,加入2-(4-氟苯氧基)-5-羟基-8-溴-1,7-萘啶-6-羧酸乙酯(0.15g,0.37mmol),甘氨酸(0.083g,1.11mmol),碳酸钾(0.152g,1.11mmol),二甲基亚砜5mL,加热至110℃,反应3小时。将反应液倒入20mL纯化水中,用浓盐酸调节pH为2~3,有固体析出,室温搅拌1小时,抽滤,真空干燥恒重,得到2-(2-(4-氟苯氧基)-5-羟基-8-溴-1,7-萘啶-6-甲酰氨基)乙酸(0.1g,62.5%)。
实施例14(Link-132):2-(2-(4-羟基苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-(4-甲氧基苯氧基)-5-羟基-1,7萘啶-6-羧酸乙酯的制备
在50mL的反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(2.0g,7.92mmol),对羟基苯甲醚(0.98g,7.92mmol),醋酸钯(0.28g,1.27mmol),1,1’-联萘-2,2’-双苯基膦(0.99g,1.58mmol),碳酸铯(5.16g,15.84mmol),15mL二甲基亚砜,加热至110℃,反应6小时。将反应液倒入150mL纯化水和100mL乙酸乙酯的混合溶液中,搅拌,过滤,滤液分相,水相再用50mL乙酸乙酯萃取一次,合并乙酸乙酯层,柱层析分离,V石油醚/V乙酸乙酯/V二氯甲烷=6/1/1-4/1/1洗脱,浓缩后得到2-(4-甲氧基苯氧基)-5-羟基-1,7萘啶-6-羧酸乙酯0.2g,7.43%。
步骤2:2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯的制备
在25mL的反应瓶中,加入2-(4-甲氧基苯氧基)-5-羟基-1,7萘啶-6-羧酸乙酯(0.2g,0.59mmol),N-氯代丁二酰亚胺(0.087g,0.65mmol),乙腈5mL,加热至80℃,反应4小时。减压浓缩,残留物柱层析分离,V石油醚/V乙酸乙酯=10/1-5/1洗脱,浓缩得到固体2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯0.2g,90.91%。
步骤3:2-(4-羟基苯氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯的制备
在50mL的反应瓶中,加入2-(4-甲氧基苯氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯(0.2g,1.53mmol)和二氯甲烷5mL,氮气保护下降温至-5℃。加入三溴化硼(1.5g,6.13mmol),继续搅拌20分钟。将反应液升至室温,继续反应2小时。将冰块缓慢加入到反应液中淬灭,搅拌10分钟,用氢氧化钠调节pH为中性,用20mL乙酸乙酯萃取两次,合并有机相,柱层析分离,V石油醚/V乙酸乙酯=5/1洗脱,浓缩得到固体2-(4-羟基苯氧基)-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯0.13g,68.42%。
步骤4:2-(2-(4-羟基苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在25mL反应瓶中,加入2-(4-羟基苯氧基)-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯(0.13g,0.36mmol),甘氨酸(0.081g,1.08mmol),碳酸钾(0.15g,1.08mmol),二甲基亚砜5mL,加热至110℃,反应4小时。将反应液倒入50mL纯化水中,用浓盐酸调节pH为2~3,有固体析出,室温搅拌1小时,抽滤,真空干燥恒重,得到2-(2-(4-羟基苯氧基)-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸(0.06g,42.86%)。
实施例15(Link-134):2-(2-乙氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
步骤1:2-乙氧基-5-羟基-1,7萘啶-6-羧酸乙酯的制备
在25mL反应瓶中,加入2-氯-5-羟基-1,7-萘啶-6-羧酸乙酯(0.5g,1.98mmol),乙醇钠乙醇溶液(2.75g,7.99mmol),无水乙醇5mL,加热至90℃,反应6小时。减压浓缩,向残留物中加入纯化水100mL,用浓盐酸调节pH为4,搅拌1小时,过滤,得到固体2-乙氧基-5-羟基-1,7萘啶-6-羧酸乙酯(0.36g,69.23%)。
步骤2:2-乙氧基-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯的制备
在25mL的反应瓶中,加入2-乙氧基-5-羟基-1,7萘啶-6-羧酸乙酯(0.36g,1.37mmol),N-氯代丁二酰亚胺(0.2g,1.51mmol),乙腈5mL,加热至80℃,反应4小时。减压浓缩,残留物柱层析分离,V石油醚/V乙酸乙酯=25/1-10/1洗脱,浓缩得到固体2-乙氧基-5-羟基-8-氯-1,7-萘啶-6羧酸乙酯0.37g,90.24%。
步骤3:2-(2-乙氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸的制备
在25mL反应瓶中,加入2-乙氧基-5-羟基-8-氯-1,7-萘啶-6-羧酸乙酯(0.37g,1.25mmol),甘氨酸(0.28g,3.75mmol),碳酸钾(0.52g,3.75mmol),二甲基亚砜5mL,加热至110℃,反应3小时。降温,将反应液倒入35mL纯化水中,用浓盐酸调节pH为2~3,有固体析出,过滤,所得固体真空干燥恒重,得到粉色固体2-(2-乙氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸(0.23g,56.10%)。
实施例16(Link-135):(2-(2-苯氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酰氧基)甲基新戊酸酯的制备
步骤1:(2-(2-苯氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酰氧基)甲基新戊酸酯的制备
在25mL反应瓶中,加入2-(2-苯氧基-5-羟基-8-氯-1,7-萘啶-6-甲酰氨基)乙酸(2.00g,5.35mmol),新戊酸氯甲酯(0.96g,6.42mmol),二异丙基乙胺(1.38g,10.7mmol),N,N-二甲基甲酰胺(20mL),加热至50℃,反应5小时。将反应液倒入60mL纯化水和乙酸乙酯的混合液中,搅拌5分钟,静置分液,水相以乙酸乙酯萃取,合并有机相,减压浓缩。残留物柱层析纯化(石油醚-乙酸乙酯=9-1),收集极性最小组分,减压浓缩得到白色固体(0.50g,19.23%)。
具体物理表征结果:
生物实施例1:化合物体外促肝癌细胞Hep3B促红细胞生成素表达
将受试化合物以二甲亚砜溶解为100mM的储存液。以含0.5%FBS的DMEM培基稀释受试物为100μM及10μM备用。人肝癌细胞Hep3B细胞接种96孔板,密度为2.5*104个/孔,细胞过夜贴壁培养,除去96孔培养板中旧液,以含0.5%FBS的DMEM培基清洗一次。加入200μl/孔受试物,剂量为100μM及10μM,每剂量做2个复孔,以稀释液替代药液作为细胞对照孔。在37℃,5%CO2培养箱中培养24h,吸取上清作为样本冻存-20℃备用。应用Elisa试剂盒(abcam)检测细胞上清液EPO。酶标仪检测450/620nm的OD值,结果如下:
| 样本 | 本发明化合物的EPO水平/FG4592EPO水平 |
| Link-118 | C |
| Link-119 | A |
| Link-120 | A |
| Link-121 | C |
| Link-122 | A |
| Link-124 | B |
| Link-125 | A |
| Link-126 | A |
| Link-127 | A |
| Link-128 | A |
| Link-129 | A |
| Link-130 | C |
| Link-131 | A |
| Link-134 | A |
0.8<EPO比值<1.1为A,1.1<EPO比值<1.3为B,EPO比值≥1.3为C
生物活性结果显示,相比于阳性对照药物FG4592,本发明化合物具有至少不低于FG4592的升高EPO作用,优选的,Link-118、Link-121、Link-124、Link-130有更显著的升高EPO作用,细胞内EPO水平表达均高于阳性对照药物FG4592。
生物实施例2:化合物体内促红细胞生成素表达。
采用c57小鼠,雄性,204只,分34组,各给药组6只动物。给药组设BAY85-3934、FG-4592、Link-118、Link-119、Link-120、Link-121、Link-122、Link-124、Link-125、Link-126、Link-127、Link-128、Link-129、Link-130、Link-131、Link-134、Link-135(10mg/kg、50mg/kg),口服给药一次,6h后采血,取血浆,采用ELISA试剂盒(R&D公司)测EPO含量。
结果显示,本发明化合物在体内均能促进促红细胞生成素表达,其中,Link-118、Link-121、Link-124、Link-129、Link-130活性较高,在10mg/kg时,即能显著促进促红细胞生成素表达,升高促红细胞生成素EPO作用均高于对照品BAY85-3934(10mg/kg)和FG4592(50mg/kg)。
1.0<EPO<1.5为A,1.5<EPO<2为B,2<EPO<3为C,EPO>3为D。
生物实施例3:化合物对正常小鼠的网织红细胞作用
采用Balb/c小鼠,雄性,72只,分12组,各给药组6只动物。给药组设FG-4592,两个剂量10mg/kg和50mg/kg,口服,给药一次;rhEPO,100IU/kg,腹腔注射,给药一次,为阳性对照组。本发明化合物均按10mg/kg,口服,给药一次。给药后72h,所有动物眼眶采血,EDTA-K2抗凝,用血细胞自动分析仪计数网织红细胞(RETIC)。结果表明,除FG4592的10mg/kg与正常动物相比无显著差异,其他对照化合物及本发明化合物的计数均高于正常动物(p<0.05),部分化合物的效果高于小分子阳性药对照药及rhEPO。
生物实施例4:化合物体外肝癌细胞Hep3B的HIF-1α和HIF-2α蛋白表达作用
将受试化合物以二甲基亚砜溶解为100mM的储存液。以含0.5%FBS的DMEM培基稀释受试物为30μM、10μM及3μM备用。人肝癌细胞Hep3B细胞接种于六孔板,接种密度为2.25*105/mL,每孔2mL,培养过夜后,不同浓度的化合物作用2小时,提取蛋白进行western blot,并对结果进行灰度分析,结果如下:
其中,1.0<蛋白比值<4.5为A,4.5<蛋白比值<8.5为B,8.5<蛋白比值<10.0为C,10.0<蛋白比值为D。
蛋白水平结果表明:与空白对照相比,Link-118、Link-121、Link-124、Link-125、Link-129、Link-130、Link-131、Link-134的HIF-1α和HIF-2α蛋白表达均高于空白对照,均对HIF-1α和HIF-2α有促进作用;且Link-118对HIF-1α的促进表达作用要强于阳性对照药物FG4592。
生物实施例5:CYP酶抑制试验
对本发明化合物进行了上述CYP450酶抑制试验,实验结果表明,本发明化合物对CYP1A2,CYP2C9,CYP2C19,CYP2D6及CYP3A4-M酶抑制活性低,安全性高。
生物实施例6:心脏毒性hERG实验
采用全细胞膜片钳技术记录hERG电流。取细胞悬液加于35mm的培养皿中,置于倒置显微镜载物台上。待细胞贴壁后,用细胞外液灌流,流速为1-2mL/min。玻璃微电极由微电极拉制仪两步拉制,待入水电阻值为2-5MΩ。建立全细胞记录后,保持钳制电位为-80mV。给予电压刺激时去极化至+60mV,然后复极化至-50mV引出hERG尾电流。所有记录均在电流稳定后进行。胞外灌流给药从低浓度开始,每个浓度5-10min至电流稳定,再给下一个浓度。本实验以阿米替林(Amitriptyline)为阳性对照,各化合物对hERG的阻断效应如下。
本研究结果表明Link-118,Link-121,Link-124,Link-125,Link-126,Link-127,Link-128,和Link-129在最高测试浓度(30μM)对hERG电流的抑制作用均远未达到IC50值,说明本研究化合物均对hERG通道没有明显的抑制作用,此研究结果可成为综合性心脏安全性评估的一部分
在CHO-K1稳定细胞株上所记录到的化合物对Herg电流的IC50值
| 样本 | IC<sub>50</sub> | 完成细胞数 | 斜率 |
| Amitriptyline | 3.14 | 3 | 1.26 |
| Link-118 | >30.00 | 3 | - |
| Link-121 | >30.00 | 3 | - |
| Link-124 | >30.00 | 3 | - |
| Link-125 | >30.00 | 3 | - |
| Link-126 | >30.00 | 3 | - |
| Link-127 | >30.00 | 3 | - |
| Link-128 | >30.00 | 3 | - |
| Link-129 | >30.00 | 3 | - |
生物实施例7:SD大鼠残肾实验
将79只SD大鼠麻醉后行残肾手术(切除左肾,右肾留1/3,切除的肾脏部分经称重确认手术误差)。4周后,45只存活的大鼠经血细胞检测,按HCT指标分组,选取状态良好的37只入组,分为Link-118(5、10mg/kg),Link-121(5、10mg/kg),FG-4592(10mg/kg),每组6只,模型组每组7只,空白对照组4只,每周给药三次(周一、三、五给药),给药15次,末次给药24小时后取血(测血常规、血液生化、铁调素试剂盒)。
结论:模型组大鼠红细胞(RBC)、血红蛋白(HGB)、红细胞压积(HCT)与空白对照组相比,显著降低,表明造模成功。与模型组相比,Link-118、FG-4592均能显著升高残肾大鼠RBC、HGB、HCT,且同剂量下Link-118的药效要优于FG-4592,Link-121能显著升高残肾大鼠HGB、HCT;与模型组相比,Link-118、FG-4592显著抑制残肾大鼠铁调素,Link-121降低了大鼠铁调素;与空白对照组相比,Link-118、Link-121、FG-4592对肝脏谷丙转氨酶、谷草转氨酶均无显著影响。
以上,对本发明的实施方式进行了说明。但是,本发明不限定于上述实施方式。凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.一种式(I)所示的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
其中,环A为五元至七元含氮芳杂环;
R1选自H或者C1-C6烷基;
R2选自H、卤素、C1-C6烷基或Z-R3;
n选自1-3;
Z选自O或S;
R3选自未取代的或任选被一个或多个取代基取代的C6-C14芳香环、5-14元芳杂环;
优选地,所述取代基独立地选自OH、卤素、C1-C6烷基、C1-C6烷氧基、卤素取代的C1-C6烷基,或R3选自氢或C1-C6烷基;
X选自卤素;
优选的,所述环A为五元或六元含氮芳杂环,更优选为仅含有一个或两个氮原子作为杂原子的五元或六元芳杂环,例如选自吡啶、吡嗪、哒嗪、吡咯、咪唑;R1选自H或者C1-C4烷基;R2选自卤素、C1-C4烷基或Z-R3;n选自1或2;R3选自未取代的或任选被一个或多个取代基取代的C6-C14芳香环、5-14元芳杂环,所述取代基独立地选自OH、卤素、C1-C4烷基、C1-C4烷氧基、卤素取代的C1-C4烷基,或R3选自C1-C4烷基;所述卤素优选为F、Cl、Br、I。
3.根据权利要求1-2任一项所述化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药,其特征在于:
所述式(I)为如下式(III)或式(IV)结构:
其中,R1、R3、n、X的定义如权利要求1-2任一项中式(I)所示;X1独立地选自卤素;所述卤素可选自F、Cl、Br、I;
优选的,所述式(III)为如下式(IIIa)结构:
优选的,所述式(IV)为如下式(V)结构:
其中,所述R1、X的定义如式IV所示;
R4’、R5’、R6’、R7’、R8’独立地选自H、OH、卤素、C1-C6烷基、C1-C6烷氧基、卤素取代的C1-C6烷基,优选为H、OH、卤素、C1-C4烷基、C1-C4烷氧基、卤素取代的C1-C4烷基。
4.一种式(Ib)所示的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
其中,环A为五元至七元含氮芳杂环;
R1选自H或者C1-C6烷基;
R2选自H、卤素、C1-C6烷基或Z-R3;
n选自1-3;
Z选自O或S;
R3选自未取代的或任选被一个或多个取代基取代的C6-C14芳香环、5-14元芳杂环。优选地,所述取代基独立地选自OH、卤素、C1-C6烷基、C1-C6烷氧基、卤素取代的C1-C6烷基,或R3选自氢或C1-C6烷基;
X选自卤素;
R4选自未取代的或被R5取代的C1-C6烷基;所述R5选自C1-C6烷氧基、C1-C6烷基(C=O)-、C1-C6烷基(C=O)O-;所述R4进一步优选为C1-C6烷基(C=O)O-C1-C6烷基-;
优选的,所述环A为五元或六元含氮芳杂环,更优选为仅含有一个或两个氮原子作为杂原子的五元或六元芳杂环,例如选自吡啶、吡嗪、哒嗪、吡咯、咪唑;R1选自H或者C1-C4烷基;R2选自卤素、C1-C4烷基或Z-R3;n选自1或2;R3选自未取代的或任选被一个或多个取代基取代的C6-C14芳香环、5-14元芳杂环,所述取代基独立地选自OH、卤素、C1-C4烷基、C1-C4烷氧基、卤素取代的C1-C4烷基,或R3选自C1-C4烷基;R4选自未取代的或被R5取代的C1-C4烷基;所述R5选自C1-C4烷氧基、C1-C4烷基(C=O)-、C1-C4烷基(C=O)O-;所述R4更优选的为C1-C4烷基(C=O)O-C1-C4烷基-,例如可选自叔丁基-(C=O)O-CH2-;所述卤素优选为F、Cl、Br、I。
5.根据权利要求4所述化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药:
所述式(Ib)为如下式(IIb)结构:
优选的,所述式(Ib)为如下式(IIIb)或式(IVb)结构:
X1独立地选自卤素;所述卤素可选自F、Cl、Br、I;
优选的,所述式(IVb)为如下式(Vb)结构:
其中,所述R1、X的定义如式(Ib)所示;
R4’、R5’、R6’、R7’、R8’独立地选自H、OH、卤素、C1-C6烷基、C1-C6烷氧基、卤素取代的C1-C6烷基,优选为H、OH、卤素、C1-C4烷基、C1-C4烷氧基、卤素取代的C1-C4烷基;
优选的,所述式(IVb)为如下式(VIb)结构:
9.一种药物组合物,其特征在于:所述组合物包含权利要求1-7任一项所述的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药,优选的,所述组合物包含治疗有效量的权利要求1-7任一项所述的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药和药学上可接受的载体。
10.根据权利要求1-7任一项所述的化合物或其互变异构体、光学异构体、氮氧化物、溶剂化物、药学上可接受的盐或前药和根据权利要求9的药物组合物在制备治疗或减轻患者的HIF相关和/或EPO相关的疾病或病症的药物中的用途。
优选的,所述药物用于防护、治疗或减轻至少部分由HIF脯氨酰羟化酶介导的疾病或所述的药物用于治疗需要抑制HIF-PHD影响的疾病;或所述药物用于防护、治疗或减轻患者的贫血、缺血、心绞痛、心肌梗塞、代谢障碍或伤口愈合疾病,所述缺血包括心肌局部缺血,所述的贫血包括急性或慢性肾病、感染、炎症、癌症、辐射、毒素、糖尿病或手术引起的贫血;所述感染包括艾滋病感染;
贫血病症可进一步与包括例如放射疗法、化学疗法、透析和手术等程序或治疗相关;另外贫血与血红蛋白和/或红细胞异常相关,例如小红细胞性贫血、低色素性贫血、再生障碍性贫血等障碍中所见的;所述的药物优选用于治疗肾性贫血疾病或病症;或所述药物用于稳定HIFα或用于促进内源性EPO产生;或所述的药物为需增加铁摄取、铁利用等的药物。
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| WO2009037570A2 (en) * | 2007-08-10 | 2009-03-26 | Crystalgenomics, Inc. | Pyridine derivatives and methods of use thereof |
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| US8952160B2 (en) | 2008-01-11 | 2015-02-10 | Fibrogen, Inc. | Isothiazole-pyridine derivatives as modulators of HIF (hypoxia inducible factor) activity |
| WO2012106472A1 (en) | 2011-02-02 | 2012-08-09 | Fibrogen, Inc. | Naphthyridine derivatives as inhibitors of hypoxia inducible factor (hif) hydroxylase |
| CN106146490B (zh) * | 2015-03-27 | 2018-10-23 | 沈阳三生制药有限责任公司 | 被芳氧基或杂芳氧基取代的5-羟基-1,7-萘啶化合物、其制备方法及其制药用途 |
| CN106146491B (zh) * | 2015-03-27 | 2017-12-12 | 沈阳三生制药有限责任公司 | 被芳基或杂芳基取代的5‑羟基‑1,7‑萘啶化合物、其制备方法及其制药用途 |
| CN108341777A (zh) * | 2017-01-23 | 2018-07-31 | 四川科伦博泰生物医药股份有限公司 | 异喹啉酮类化合物及其应用 |
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