1-ethyl-9H-pyrido [3,4-b]indole-3-carboxylic acid | 33821-74-8

• 分子结构分类: 有机化合物 - 生物碱及其衍生物 - 哈马拉生物碱
• 英文名称: 1-ethyl-9H-pyrido [3,4-b]indole-3-carboxylic acid
• 英文别名: 1-Ethyl-beta-carboline-3-carboxylic acid；1-ethyl-9H-pyrido[3,4-b]indole-3-carboxylic acid
• CAS: 33821-74-8
• 化学式: C₁₄H₁₂N₂O₂
• 分子量: 240.261
• InChiKey: DAPZVPLVUVKDIF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  66
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  1-ethyl-9H-pyrido [3,4-b]indole-3-carboxylic acid 在 氯化亚砜 、 三乙胺 作用下， 以 二氯甲烷 、 氯仿 为溶剂， 反应 1.0h， 生成 1-ethyl-N-(6-((1,2,3,4-tetrahydro-acridine-9-yl)amino)hexyl)-9H-pyridine[3,4-b]indole-3-carboxamide
  参考文献：
  名称：

  Design, synthesis and evaluation of novel tacrine-(β-carboline) hybrids as multifunctional agents for the treatment of Alzheimer’s disease

  摘要：

  A series of tacrine-(beta-carboline) hybrids (11a-q) were designed, synthesized and evaluated as multifunctional cholinesterase inhibitors against Alzheimer's disease (AD). In vitro studies showed that most of them exhibited significant potency to inhibit acetylcholinesterase (eeAChE and hAChE), butyrylcholinesterase (BuChE) and self-induced beta-amyloid (A beta) aggregation, Cu2+-induced A beta (1-42) aggregation, and to chelate metal ions. Especially, 11l presented the greatest ability to inhibit cholinesterase (IC50, 21.6 nM for eeAChE, 63.2 nM for hAChE and 39.8 nM for BuChE), good inhibition of A beta aggregation (65.8% at 20 mu M) and good antioxidant activity (1.57 trolox equivalents). Kinetic and molecular modeling studies indicated that 11l was a mixed-type inhibitor, binding simultaneously to the catalytic anionic site (CAS) and the peripheral anionic site (PAS) of AChE. In addition, 11l could chelate metal ions, reduce PC12 cells death induced by oxidative stress and penetrate the blood-brain barrier (BBB). These results suggested that 11l might be an excellent multifunctional agent for AD treatment. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2014.08.035
• 作为产物：
  描述：

  甲基色氨酸 在 potassium permanganate 、 三氟乙酸 、 sodium hydroxide 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 24.0h， 生成 1-ethyl-9H-pyrido [3,4-b]indole-3-carboxylic acid
  参考文献：
  名称：

  酰胺键合成酶McbA的宽芳酸特异性表明酰胺的生物催化合成潜力

  摘要：

  酰胺键的形成是药物合成化学中最重要的反应之一。因此，引起酰胺键形成的可持续方法的发展，包括被酶催化的那些方法，引起了人们的极大兴趣。ATP依赖的酰胺键合成酶（ABS）酶McbA，来自Marinoctinospora thermotolerans，催化酰胺的形成，这是通向玛丽娜咔啉次生代谢物的生物合成途径的一部分。反应通过腺苷酸中间体进行，在一个活性位点内催化了腺苷酸化和酰胺化步骤。在这项研究中，McbA被用于由一系列芳基羧酸与伴侣胺以1-5摩尔当量提供的合成药物型酰胺。McbA的结构揭示了芳酸底物耐受性的结构决定因素以及与催化的两个半反应相关的构象差异。McbA的催化性能以及其结构表明，该酶和其他ABS酶可能经过工程改造，可用于药物相关（手性）酰胺的可持续合成。

  DOI：

  10.1002/anie.201804592

文献信息

• Discovery and preliminary mechanism of 1-carbamoyl β-carbolines as new antifungal candidates
  作者：Tao Sheng、Mengmeng Kong、Yujie Wang、HuiJun Wu、Qin Gu、Anita Shyying Chuang、Shengkun Li、Xuewen Gao

  DOI：10.1016/j.ejmech.2021.113563

  日期：2021.10

  Natural β-carboline alkaloids are ideal models for the discovery of pharmaceutically important entities. Various 1-substituted β-carbolines were synthesized from commercially inexpensive tryptophan and demonstrated significant in vitro antifungal activity against G. graminis. Significantly, compound 4m (EC50 = 0.45 μM) with carboxamide at 1-position displayed the best efficacy and nearly 20 folds enhancement

  天然β-咔啉生物碱是发现重要药物实体的理想模型。各种 1-取代的β-咔啉是由商业上廉价的色氨酸合成的，并在体外对禾谷菌具有显着的抗真菌活性。值得注意的是， 与 Silthiopham (EC 50  = 8.95 μM)相比，在 1 位具有甲酰胺的化合物4m (EC 50 = 0.45 μM) 显示出最佳功效和近 20 倍的抗真菌潜力增强。此外，化合物6，7和4I显示出优异的体外抗真菌活性以及针对B. cinerea和F. graminearum 的体内保护和治疗活性。初步机制研究表明，化合物4m导致活性氧积累、细胞膜破坏和组蛋白乙酰化失调。这些发现表明 1-氨基甲酰基β-咔啉可以作为发现新型广谱杀菌剂候选物的有前途的模型。
• Novel pharmaceutical agents containing carbohydrate moieties and methods of their preparation and use
  申请人：Christian T. Samuel

  公开号：US20060189547A1

  公开（公告）日：2006-08-24

  Hydrophilic N-linked pharmaceutical compositions, methods of their preparation and use in neuraxial drug delivery comprising a glycosyl CNS acting prodrug compound covalently N-linked with a saccharide through an amide or an amine bond and a formulary consisting of an additive, a stabilizer, a carrier, a binder, a buffer, an excipient, an emollient, a disintegrant, a lubricating agent, an antimicrobial agent or a preservative, with the proviso that the saccharide moiety is not a cyclodextrin or a glucuronide.

  亲水性N-连接药物组合物，其制备方法和在神经轴向药物输送中的使用，包括一种糖基中枢神经系统作用前药化合物，通过酰胺或胺键与糖苷共价连接，并且配方包括添加剂、稳定剂、载体、粘合剂、缓冲剂、赋形剂、润肤剂、破碎剂、润滑剂、抗微生物剂或防腐剂，但前提是糖苷基团不是环糊精或葡萄糖醛酸盐。
• Novel Pharmaceutical Agents Containing Carbohydrate Moieties And Methods Of Their Preparation And Use
  申请人：Christian Samuel T.

  公开号：US20110237544A1

  公开（公告）日：2011-09-29

  Hydrophilic N-linked pharmaceutical compositions, methods of their preparation and use in neuraxial drug delivery comprising a glycosyl CNS acting prodrug compound covalently N-linked with a saccharide through an amide or an amine bond and a formulary consisting of an additive, a stabilizer, a carrier, a binder, a buffer, an excipient, an emollient, a disintegrant, a lubricating agent, an antimicrobial agent or a preservative, with the proviso that the saccharide moiety is not a cyclodextrin or a glucuronide.

  亲水性N-连接的药物组成物、其制备方法和在神经轴药物输送中的使用，包括一种糖基CNS作用的前药化合物，通过酰胺或胺键与糖分子共价连接，并由添加剂、稳定剂、载体、粘合剂、缓冲剂、赋形剂、润肤剂、崩解剂、润滑剂、抗微生物剂或防腐剂组成的制剂，前提是糖分子部分不是环糊精或葡糖醛酸盐。
• New β-carboline derivatives as potential α-glucosidase inhibitor: Synthesis and biological activity evaluation
  作者：Jin Lin、Di Xiao、Li Lu、Bingwen Liang、Zhuang Xiong、Xuetao Xu

  DOI：10.1016/j.molstruc.2023.135279

  日期：2023.7

  find potent α-glucosidase inhibitors, thirty-one β-carboline derivatives containing piperazine moieties (6a∼6u, 7a∼7j) were synthesized and evaluated their α-glucosidase inhibitory activity. Most β-carboline derivatives showed potential α-glucosidase inhibitory activity, especially, compound 7c presented obvious α-glucosidase inhibitory activity (IC50: 8.9 ± 0.2 μM), ∼ 69 folds stronger than acarbose (IC50:

  α-葡萄糖苷酶是糖尿病的重要治疗靶点。为了寻找有效的 α-葡萄糖苷酶抑制剂，合成了31 个含有哌嗪部分的 β-咔啉衍生物 ( 6a∼6u, 7a∼7j ) 并评估了它们的 α-葡萄糖苷酶抑制活性。大多数β-咔啉衍生物表现出潜在的α-葡萄糖苷酶抑制活性，尤其是化合物7c表现出明显的α-葡萄糖苷酶抑制活性（IC 50：8.9 ± 0.2 μM），比阿卡波糖（IC 50：610.7 ± 0.1 μM）强约69倍。抑制机制和动力学解释了化合物7c是一种可逆的混合型抑制剂。采用 CD 光谱、3D 荧光和分子对接揭示7c的机制抗α-葡萄糖苷酶。细胞毒性测定确定了7c的低细胞毒性。
• Flavoprotein StnP2 Catalyzes the β-Carboline Formation during the Streptonigrin Biosynthesis
  作者：Xiaozheng Wang、Dekun Kong、Tingting Huang、Fei Xu、Man-Cheng Tang、Zixin Deng、Shuangjun Lin

  DOI：10.1021/acschembio.2c00704

  日期：2022.12.16

  undergoes a spontaneous dehydrogenation to βC formation involved in the biosynthesis of the antitumor agent streptonigrin. Biochemical characterization showed that StnP2 catalyzed the highly regio- and stereo-selective dehydrogenation, and StnP2 exhibits promiscuity toward different THβCs. This study provides an alternative kind of enzyme catalyzing the biosynthesis of βC alkaloids and enhances the importance

  β-咔啉 (βC) 生物碱构成了一大类吲哚生物碱，具有多种药理特性，例如抗肿瘤、抗病毒、抗寄生虫和抗菌活性。在这里，我们报告黄素蛋白 StnP2 催化四氢-β-咔啉 (THβC) 在 C1–N2 处脱氢生成 3,4-二氢-β-咔啉 (DHβC)，随后 DHβC 自发脱氢为 βC形成参与抗肿瘤剂链黑苷的生物合成。生化表征表明，StnP2 催化了高度区域和立体选择性的脱氢反应，并且 StnP2 对不同的 THβC 表现出混杂性。该研究提供了一种替代酶来催化 βC 生物碱的生物合成，并增强了黄素蛋白的重要性。