2,4-二氨基-6-氯喹唑啉 | 18671-95-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氮杂萘
• 中文名称: 2,4-二氨基-6-氯喹唑啉
• 英文名称: 2,4-diamino-6-chloroquinazoline
• 英文别名: 6-chloro-quinazoline-2,4-diamine；6-chloro-2,4-diamino-quinazoline；2,4-Diamino-6-chlor-chinazolin；6-Chlor-2,4-diaminochinazolin；6-Chloroquinazoline-2,4-diamine
• CAS: 18671-95-9
• 化学式: C₈H₇ClN₄
• 分子量: 194.623
• InChiKey: ZMQPXDMCQOHVLV-UHFFFAOYSA-N

物化性质

• 沸点：
  488.8±53.0 °C(Predicted)
• 密度：
  1.538±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  77.8
• 氢给体数：
  2
• 氢受体数：
  4

安全信息

• 海关编码：
  2933990090

反应信息

• 作为产物：
  描述：

  chloro-formamidine hydrochloride 、 2-氨基-5-氯苯腈 在 氨 、 水 作用下， 以 环丁砜 、 二甲基砜 为溶剂， 反应 0.5h， 以99%的产率得到2,4-二氨基-6-氯喹唑啉
  参考文献：
  名称：

  WO2008/9077

  摘要：

  公开号：

文献信息

• Dicyclic and Tricyclic Diaminopyrimidine Derivatives as Potent Inhibitors of <i>Cryptosporidium parvum</i> Dihydrofolate Reductase: Structure-Activity and Structure-Selectivity Correlations
  作者：Richard G. Nelson、Andre Rosowsky

  DOI：10.1128/aac.45.12.3293-3303.2001

  日期：2001.12

  A structurally diverse library of 93 lipophilic di- and tricyclic diaminopyrimidine derivatives was tested for the ability to inhibit recombinant dihydrofolate reductase (DHFR) cloned from human and bovine isolates of Cryptosporidium parvum (J. R. Vásquez et al., Mol. Biochem. Parasitol. 79:153–165, 1996). In parallel, the library was also tested against human DHFR and, for comparison, the enzyme from Escherichia coli . Fifty percent inhibitory concentrations (IC ₅₀ s) were determined by means of a standard spectrophotometric assay of DHFR activity with dihydrofolate and NADPH as the cosubstrates. Of the compounds tested, 25 had IC ₅₀ s in the 1 to 10 μM range against one or both C. parvum enzymes and thus were not substantially different from trimethoprim (IC ₅₀ s, ca. 4 μM). Another 25 compounds had IC ₅₀ s of <1.0 μM, and 9 of these had IC ₅₀ s of <0.1 μM and thus were at least 40 times more potent than trimethoprim. The remaining 42 compounds were weak inhibitors (IC ₅₀ s, >10 μM) and thus were not considered to be of interest as drugs useful against this organism. A good correlation was generally obtained between the results of the spectrophotometric enzyme inhibition assays and those obtained recently in a yeast complementation assay (V. H. Brophy et al., Antimicrob. Agents Chemother. 44:1019–1028, 2000; H. Lau et al., Antimicrob. Agents Chemother. 45:187–195, 2001). Although many of the compounds in the library were more potent than trimethoprim, none had the degree of selectivity of trimethoprim for C. parvum versus human DHFR. Collectively, the results of these assays comprise the largest available database of lipophilic antifolates as potential anticryptosporidial agents. The compounds in the library were also tested as inhibitors of the proliferation of intracellular C. parvum oocysts in canine kidney epithelial cells cultured in folate-free medium containing thymidine (10 μM) and hypoxanthine (100 μM). After 72 h of drug exposure, the number of parasites inside the cells was quantitated by indirect immunofluorescence microscopy. Sixteen compounds had IC ₅₀ s of <3 μM, and five of these had IC ₅₀ s of <0.3 μM and thus were comparable in potency to trimetrexate. The finding that submicromolar concentrations of several of the compounds in the library could inhibit in vitro growth of C. parvum in host cells in the presence of thymidine (dThd) and hypoxanthine (Hx) suggests that lipophilic DHFR inhibitors, in combination with leucovorin, may find use in the treatment of intractable C. parvum infections.

  摘要 对 93 种亲脂性二环和三环二氨基嘧啶衍生物的结构多样性文库进行了测试，以检测其抑制从人和牛分离的副隐孢子虫中克隆的重组二氢叶酸还原酶（DHFR）的能力。 副猪隐孢子虫 (J. R. Vásquez et al., Mol. Biochem. Parasitol. 79:153-165, 1996)。与此同时，该文库还针对人类 DHFR 进行了测试，并与来自 大肠杆菌 .五成抑制浓度（IC 50 s）是通过以二氢叶酸和 NADPH 为共底物的 DHFR 活性标准分光光度法测定的。在测试的化合物中，25 个化合物的 IC 50 在 1 至 10 μM 范围内，对一种或两种 C. parvum 因此与三甲氧苄啶（IC 50 s，约为 4 μM）没有本质区别。另外 25 种化合物的 IC 50 s 为 1.0 μM，其中 9 种化合物的 IC 50 为 0.1 μM，因此药效至少是三甲氧苄啶的 40 倍。其余 42 种化合物为弱抑制剂（IC 50 s，>10 μM），因此不被认为是对这种生物有用的药物。分光光度法酶抑制测定的结果与最近在酵母互补测定中获得的结果之间通常具有良好的相关性（V. H. Brophy 等人，Antimicrob.Agents Chemother.44:1019-1028, 2000; H. Lau et al.Agents Chemother.45:187-195, 2001).虽然文库中的许多化合物都比三甲氧苄氨嘧啶更有效，但没有一种化合物具有三甲氧苄氨嘧啶对副猪嗜血杆菌的选择性。 副猪嗜血杆菌 对人类 DHFR 的选择性。总之，这些检测结果构成了目前最大的亲脂性抗酚化合物潜在抗隐孢子虫药物数据库。该化合物库中的化合物还作为细胞内副猪嗜血杆菌增殖抑制剂进行了测试。 副猪嗜血杆菌 卵囊在含有胸苷（10 μM）和次黄嘌呤（100 μM）的无叶酸培养基中培养的犬肾上皮细胞中的增殖抑制剂。药物暴露 72 小时后，通过间接免疫荧光显微镜对细胞内的寄生虫数量进行量化。16种化合物的IC 50 为 <3 μM，其中五个化合物的 IC 50 s 为 <0.3 μM，因此其效力与三甲曲沙相当。研究发现，库中几种亚摩尔浓度的化合物可抑制副嗜血杆菌的体外生长。 副猪嗜血杆菌 在胸苷（dThd）和次黄嘌呤（Hx）存在的宿主细胞中的体外生长。 C. parvum 感染。
• 4,6-DI- AND 2,4,6-TRISUBSTITUTED QUINAZOLINE DERIVATIVES USEFUL FOR TREATING VIRAL INFECTIONS
  申请人：Gao Ling-Jie

  公开号：US20090285782A1

  公开（公告）日：2009-11-19

  This invention provides quinazoline derivatives represented by the structural formula: (I); wherein: R 2 is hydrogen, NR′R″, C 1-7 alkyl, arylC 1-7 alkyl or C 3-10 cycloalkyl; R 4 is amino, C 1-7 alkyl, C 2-7 alkenyl, C 3-10 cycloalkyl, C 3-10 cycloalkenyl, aryl, heterocyclic, arylalkyl, heterocyclic-substituted C 1-7 alkyl or C 3-10 cycloalkyl-C 1-7 alkyl; R 5 is hydrogen or C 1-7 alkyl, or R 5 and R 4 together with the nitrogen atom to which they are attached form a heterocyclic ring; Y is a single bond, C 1-7 alkylene, C 2-7 alkenylene or C 2-7 alkynylene; R 6 is halogen, heteroaryl or aryl; R′ and R″ are each independently hydrogen, C 1-7 alkyl-carbonyl or C 1-7 alkyl; provided that R 4 is not phenyl substituted with morpholino when R 2 is H and R 5 is H, and provided that when NR 4 R 5 is piperazinyl, said NR 4 R 5 is either non-substituted or substituted with methyl or acetyl; a pharmaceutically acceptable addition salt, a stereoisomer, a mono- or a di-N-oxide, a solvate or a pro-drug thereof, for the treatment of viral infections.

  该发明提供了由结构式(I)表示的喹唑啉衍生物；其中：R2是氢、NR′R″、C1-7烷基、芳基C1-7烷基或C3-10环烷基；R4是氨基、C1-7烷基、C2-7烯基、C3-10环烷基、C3-10环烯基、芳基、杂环、芳基烷基、杂环取代的C1-7烷基或C3-10环烷基-C1-7烷基；R5是氢或C1-7烷基，或者R5和R4与它们所连接的氮原子一起形成杂环环；Y是单键、C1-7烷基、C2-7烯基或C2-7炔基；R6是卤素、杂环芳基或芳基；R′和R″各自独立地是氢、C1-7烷基-羰基或C1-7烷基；前提是当R2为H且R5为H时，R4不是取代有吗啡啶基的苯基；当NR4R5是哌嗪基时，所述的NR4R5要么未取代，要么被甲基或乙酰基取代；其药学上可接受的加合物、立体异构体、单烯氮或双烯氮、溶剂化合物或前药，用于治疗病毒感染。
• 4,6-DI- AND 2,4,6-TRISUBSTITUTED QUINAZOLINE DERIVATIVES AND PHARMACEUTICAL COMPOSITIONS USEFUL FOR TREATING VIRAL INFECTIONS
  申请人：Gao Ling-Jie

  公开号：US20100143299A1

  公开（公告）日：2010-06-10

  This invention provides the treatment of viral infections with a 4,6-disubstituted or 2,4,6-trisubstituted quinazoline derivative represented by the structural formula [(I)] wherein: R 2 is selected from the group consisting of hydrogen, NR′R″ and C 1-7 alkyl; —A is selected from the group consisting of a bond, O, S(O) n , C 1-7 alkylene, C 2-7 alkenylene and C 2-7 alkynylene; R 4 is selected from the group consisting of C 1-7 alkyl, C 2-7 alkenyl, C 3-10 cycloalkyl, C 3-10 cycloalkenyl, aryl, heterocyclic, arylalkyl, heterocyclic-substituted alkyl and cycloalkyl-alkyl; —Y is selected from the group consisting of a single bond, C 1-7 alkylene, C 2-7 alkenylene, and C 2-7 alkynylene; n is 0, 1 or 2; and R 6 is selected from the group consisting of halogen, heteroaryl and aryl; a pharmaceutically acceptable addition salt, a stereoisomer, a mono- or a di-Λ/-oxide, a solvate or a pro-drug thereof.

  本发明提供了一种使用4,6-二取代或2,4,6-三取代喹唑啉衍生物的治疗病毒感染的方法，其结构式表示为[(I)]，其中：R2选自氢、NR′R″和C1-7烷基的组；—A选自键、O、S(O)n、C1-7烷基、C2-7烯基和C2-7炔基的组；R4选自C1-7烷基、C2-7烯基、C3-10环烷基、C3-10环烯基、芳基、杂环、芳基烷基、杂环取代烷基和环烷基-烷基的组；—Y选自单键、C1-7烷基、C2-7烯基和C2-7炔基的组；n为0、1或2；R6选自卤素、杂芳基和芳基的组；以及其药学上可接受的加合物盐、立体异构体、单-或双-Λ/-氧化物、溶剂化合物或前药。
• 4,6-di- and 2,4,6-trisubstituted quinazoline derivatives and pharmaceutical compositions useful for treating viral infections
  申请人：Gao Ling-Jie

  公开号：US08673929B2

  公开（公告）日：2014-03-18

  This invention provides the treatment of viral infections with a 4,6-disubstituted or 2,4,6-trisubstituted quinazoline derivative represented by the structural formula [(I)] wherein: R2 is selected from the group consisting of hydrogen, NR′R″ and C1-7 alkyl; —A is selected from the group consisting of a bond, O, S(O)n, C1-7 alkylene, C2-7 alkenylene and C2-7 alkynylene; R4 is selected from the group consisting of C1-7 alkyl, C2-7 alkenyl, C3-10cycloalkyl, C3-10 cycloalkenyl, aryl, heterocyclic, arylalkyl, heterocyclic-substituted alkyl and cycloalkyl-alkyl; —Y is selected from the group consisting of a single bond, C1-7 alkylene, C2-7 alkenylene, and C2-7 alkynylene; n is 0, 1 or 2; and R6 is selected from the group consisting of halogen, heteroaryl and aryl; a pharmaceutically acceptable addition salt, a stereoisomer, a mono- or a di-Λ/-oxide, a solvate or a pro-drug thereof.

  本发明提供了一种使用4,6-二取代或2,4,6-三取代的喹唑啉衍生物[(I)]的治疗病毒感染的方法，其中：R2选自氢、NR′R″和C1-7烷基组成的群；-A选自键合、O、S（O）n、C1-7烷基、C2-7烯基和C2-7炔基组成的群；R4选自C1-7烷基、C2-7烯基、C3-10环烷基、C3-10环烯基、芳基、杂环、芳基烷基、杂环取代烷基和环烷基烷基组成的群；-Y选自单键、C1-7烷基、C2-7烯基和C2-7炔基组成的群；n为0、1或2；R6选自卤素、杂芳基和芳基组成的群；以及其药学上可接受的加成盐、立体异构体、单Λ/-氧化物、双Λ/-氧化物、溶剂化合物或前药。
• 4,6-di- and 2,4,6-trisubstituted quinazoline derivatives useful for treating viral infections
  申请人：Gao Ling-Jie

  公开号：US09259426B2

  公开（公告）日：2016-02-16

  This invention provides quinazoline derivatives represented by the structural formula: (I); wherein: R2 is hydrogen, NR′R″, C1-7 alkyl, arylC1-7 alkyl or C3-10 cycloalkyl; R4 is amino, C1-7 alkyl, C2-7 alkenyl, C3-10 cycloalkyl, C3-10 cycloalkenyl, aryl, heterocyclic, arylalkyl, heterocyclic-substituted C1-7 alkyl or C3-10 cycloalkyl-C1-7 alkyl; R5 is hydrogen or C1-7 alkyl, or R5 and R4 together with the nitrogen atom to which they are attached form a heterocyclic ring; Y is a single bond, C1-7 alkylene, C2-7 alkenylene or C2-7 alkynylene; R6 is halogen, heteroaryl or aryl; R′ and R″ are each independently hydrogen, C1-7 alkyl-carbonyl or C1-7 alkyl; provided that R4 is not phenyl substituted with morpholino when R2 is H and R5 is H, and provided that when NR4R5 is piperazinyl, said NR4R5 is either non-substituted or substituted with methyl or acetyl; a pharmaceutically acceptable addition salt, a stereoisomer, a mono- or a di-N-oxide, a solvate or a pro-drug thereof, for the treatment of viral infections.

  本发明提供了由结构式（I）表示的喹唑啉衍生物；其中：R2为氢、NR′R″、C1-7烷基、芳基C1-7烷基或C3-10环烷基；R4为氨基、C1-7烷基、C2-7烯基、C3-10环烷基、C3-10环烯基、芳基、杂环、芳基烷基、杂环取代的C1-7烷基或C3-10环烷基-C1-7烷基；R5为氢或C1-7烷基，或R5与R4一起与它们所连接的氮原子形成杂环环；Y为单键、C1-7亚烷基、C2-7烯基或C2-7炔基；R6为卤素、杂环芳基或芳基；R′和R″各自独立地为氢、C1-7烷基-羰基或C1-7烷基；前提是当R2为H且R5为H时，R4不是取代了吗啡啉的苯基，且当NR4R5为哌嗪基时，所述的NR4R5要么是非取代的，要么是取代了甲基或乙酰基的；其中所述的衍生物是药学上可接受的加合盐、立体异构体、单一或二重N-氧化物、溶剂合物或前药，用于治疗病毒感染。