N6-Cycloheptyladenosine | 41552-83-4

• 分子结构分类: 有机化合物 - 核苷、核苷酸和类似物 - 嘌呤核苷
• 英文名称: N6-Cycloheptyladenosine
• 英文别名: (2R,3R,4S,5R)-2-(6-(cycloheptylamino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol；N⁶-Cycloheptyladenosin；(2R,3R,4S,5R)-2-[6-(cycloheptylamino)purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol
• CAS: 41552-83-4
• 化学式: C₁₇H₂₅N₅O₄
• 分子量: 363.417
• InChiKey: LVRXGPGFWBAHOI-LSCFUAHRSA-N

物化性质

• 沸点：
  678.3±65.0 °C(Predicted)
• 密度：
  1.65±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  26
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  126
• 氢给体数：
  4
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  N6-Cycloheptyladenosine 在 磷酸三甲酯 、 proton sponge 、 三氯氧磷 、 乙酸–三乙胺 作用下， 以 水 为溶剂， 反应 1.5h， 以52%的产率得到((2R,3S,4R,5R)-5-(6-(cycloheptylamino)-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl dihydrogen phosphate
  参考文献：
  名称：

  靶向肿瘤抑制蛋白 FHIT 的荧光探针的合成和凋亡诱导 FHIT 抑制剂的鉴定

  摘要：

  对于癌症的早期诊断，导致更好的完全康复机会，在癌前病变中表达已经改变的标记基因是可取的，肿瘤抑制基因FHIT是一种候选基因。基因产物 FHIT 蛋白具有独特的二核苷三磷酸水解酶 (AP 3Aase) 活性，在本研究中，我们设计并合成了一系列利用该活性的 FHIT 荧光探针。我们优化了探针结构以实现与 FHIT 的高特异性反应，并将优化的探针应用于 FHIT 抑制剂的筛选试验。用该测定法筛选化合物库确定了几个命中。命中化合物的结构开发提供了有效的 FHIT 抑制剂。这些抑制剂通过半胱天冬酶激活诱导表达 FHIT 的癌症细胞凋亡。我们的结果支持这样的观点，即 FHIT 结合剂，无论是 AP 3 Aase 活性的抑制剂还是激动剂，都可能是有前途的抗癌剂。

  DOI：

  10.1021/acs.jmedchem.1c00874
• 作为产物：
  描述：

  (2R,3R,4S,5R)-2-(2-Chloro-6-cycloheptylamino-purin-9-yl)-5-hydroxymethyl-tetrahydro-furan-3,4-diol 在 10percent Pd/C sodium hydroxide 、 氢气 作用下， 以 乙醇 为溶剂， 反应 24.0h， 以60%的产率得到N6-Cycloheptyladenosine
  参考文献：
  名称：

  N-Cycloalkyl Derivatives of Adenosine and 1-Deazaadenosine as Agonists and Partial Agonists of the A₁ Adenosine Receptor

  摘要：

  A number of cycloalkyl substituents (from C-3 to C-8) have been int-reduced on the 6-amino group of adenosine, 1-deazaadenosine, and 2'-deoxyadenosine, bearing or not a chlorine atom at the 2-position, to evaluate the influence on the A(1) and A(2A) affinity of steric hindrance and lipophilicity. Furthermore, the guanosine 5'-triphosphate (GTP) shift and the maximal induction of guanosine 5'-(gamma-thio)triphosphate ([S-35]GTP gamma S) binding to G proteins in rat brain membranes were used to determine the intrinsic activity of these nucleosides at the A(1) adenosine receptor. All compounds of the ribose-bearing series proved to be full agonists, the 1-deaza derivatives showing affinities for the Al receptor about 10-fold lower than the corresponding adenosines. On the other hand, all the 2'-deoxyribose derivatives bind to the A(1) receptor with affinities in the high nanomolar range, with the 2-chloro substituted compounds showing slightly higher affinities than the 2-unsubstituted counterparts. In terms of the potencies, the most potent compounds proved to be those bearing four- and five-membered rings. Both GTP shifts and [S-35]-GTP gamma S experiments showed that most of the 2'-deoxyadenosine derivatives are partial agonists, The 2'-deoxyadenosine derivatives which were identified as partial agonists consistently detected fewer Az receptors in the high-affinity state than full agonists. However, it is worthwhile noting that there was not a simple Linear relationship between receptor occupancy and activation. These results indicate that a critical density of A(1) adenosine receptors in the high-affinity state is required for G protein activation.

  DOI：

  10.1021/jm9911231

文献信息

• Adenosine Analogues as Inhibitors of <i>Trypanosoma </i><i>b</i><i>rucei </i>Phosphoglycerate Kinase:  Elucidation of a Novel Binding Mode for a 2-Amino-N⁶-Substituted Adenosine
  作者：Jerome C. Bressi、Jungwoo Choe、Melinda T. Hough、Frederick S. Buckner、Wesley C. Van Voorhis、Christophe L. M. J. Verlinde、Wim G. J. Hol、Michael H. Gelb

  DOI：10.1021/jm000287a

  日期：2000.11.1

  As part of a project aimed at structure-based design of adenosine analogues as drugs against African trypanosomiasis, N-6-, 2-amino-N-6-, and N-2-substituted adenosine analogues were synthesized and tested to establish structure-activity relationships for inhibiting Trypanosoma brucei glycosomal phosphoglycerate kinase (PGK), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and glycerol-3-phosphate dehydrogenase (GPDH). Evaluation of X-ray structures of parasite PGK, GAPDH, and GPDH complexed with their adenosyl-bearing substrates led us to generate a series of adenosine analogues which would target all three enzymes simultaneously. There was a modest preference by PGK for NG-substituted analogues bearing the 2-amino group. The best compound in this series, 2-amino-N-6-[2 "-(p-hydroxyphenyl)ethyl]adenosine (46b), displayed a 23-fold improvement over adenosine with an IC50 of 130 muM. 2-[[2 "-(p-Hydroxyphenyl)ethyl]amino]adenosine (46c) was a weak inhibitor of T. brucei PGK with an IC50 of 500 muM. To explore the potential of an additive effect that having the N-6 and N-2 substitutions in one molecule might provide, the best ligands from the two series were incorporated into N-6,N-2-disubstituted adenosine analogues to yield N-6-(2 " -phenylethyl)-2-[(2 " -phenylethyl)amino]adenosine (69) as a 30 muM inhibitor of T. brucei PGK which is 100-fold more potent than the adenosine template. In contrast, these series gave no compounds that inhibited parasitic GAPDH or GPDH more than 10-20% when tested at 1.0 mM. A 3.0 Angstrom X-ray structure of a T, brucei PGK/46b complex revealed a binding mode in which the nucleoside analogue was flipped and the ribosyl moiety adopted a syn conformation as compared with the previously determined binding mode of ADP. Molecular docking experiments using QXP and SAS program suites reproduced this "flipped and rotated" binding mode.
• Selective Tight Binding Inhibitors of Trypanosomal Glyceraldehyde-3-phosphate Dehydrogenase via Structure-Based Drug Design
  作者：Alex M. Aronov、Christophe L. M. J. Verlinde、Wim G. J. Hol、Michael H. Gelb

  DOI：10.1021/jm9802620

  日期：1998.11.1

  Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) from the sleeping sickness parasite Trypanosoma brucei is a rational target for anti-trypanosomatid drug design because glycolysis provides virtually all of the energy for the bloodstream form of this parasite. Glycolysis is also an important source of energy for other pathogenic parasites including Trypanosoma cruzi and Leishmania mexicana. The current study is a continuation of our efforts to use the X-ray structures of T. brucei and L. mexicana GAPDHs containing bound NAD(+) to design adenosine analogues that bind tightly to the enzyme pocket that accommodates the adenosyl moiety of NAD(+). The goal was to improve the affinity, selectivity, and solubility of previously reported 2'-deoxy-2'-(3-methoxybenzamido)adenosine (1). It was found that introduction of hydroxyl functions on the benzamido ring increases solubility without significantly affecting enzyme inhibition. Modifications at the previously unexploited N-6-position of the purine not only lead to a substantial increase in inhibitor potency but are also compatible with the 2'-benzamido moiety of the sugar. For N-6-substituted adenosines, two successive rounds of modeling and screening provided a 330-fold gain in affinity versus that of adenosine. The combination of N-6- and 2'-substitutions produced significantly improved inhibitors. N-6-Benzyl (9a) and N-6-2-methylbenzyl (9b) derivatives of 1 display IC50 values against L. mexicana GAPDH of 16 and 4 mu M, respectively (3100- and 12500-fold more potent than adenosine). The adenosine analogues did not inhibit human GAPDH. These studies underscore the usefulness of structure-based drug design for generating potent and species-selective enzyme inhibitors of medicinal importance starting from a weakly binding lead compound.
• Synthesis of Fluorescent Probes Targeting Tumor-Suppressor Protein FHIT and Identification of Apoptosis-Inducing FHIT Inhibitors
  作者：Mitsuyasu Kawaguchi、Eriko Sekimoto、Yuhei Ohta、Naoya Ieda、Takashi Murakami、Hidehiko Nakagawa

  DOI：10.1021/acs.jmedchem.1c00874

  日期：2021.7.8

  tumor-suppressor gene FHIT is one candidate. The gene product, FHIT protein, has a unique dinucleoside triphosphate hydrolase (AP3Aase) activity, and in this study, we designed and synthesized a series of FHIT fluorescent probes utilizing this activity. We optimized the probe structure for high and specific reactivity with FHIT and applied the optimized probe in a screening assay for FHIT inhibitors. Screening of

  对于癌症的早期诊断，导致更好的完全康复机会，在癌前病变中表达已经改变的标记基因是可取的，肿瘤抑制基因FHIT是一种候选基因。基因产物 FHIT 蛋白具有独特的二核苷三磷酸水解酶 (AP 3Aase) 活性，在本研究中，我们设计并合成了一系列利用该活性的 FHIT 荧光探针。我们优化了探针结构以实现与 FHIT 的高特异性反应，并将优化的探针应用于 FHIT 抑制剂的筛选试验。用该测定法筛选化合物库确定了几个命中。命中化合物的结构开发提供了有效的 FHIT 抑制剂。这些抑制剂通过半胱天冬酶激活诱导表达 FHIT 的癌症细胞凋亡。我们的结果支持这样的观点，即 FHIT 结合剂，无论是 AP 3 Aase 活性的抑制剂还是激动剂，都可能是有前途的抗癌剂。
• <i>N</i>-Cycloalkyl Derivatives of Adenosine and 1-Deazaadenosine as Agonists and Partial Agonists of the A₁ Adenosine Receptor
  作者：Sauro Vittori、Anna Lorenzen、Christina Stannek、Stefano Costanzi、Rosaria Volpini、Adriaan P. IJzerman、Jakobien K. Von Frijtag Drabbe Kunzel、Gloria Cristalli

  DOI：10.1021/jm9911231

  日期：2000.1.1

  A number of cycloalkyl substituents (from C-3 to C-8) have been int-reduced on the 6-amino group of adenosine, 1-deazaadenosine, and 2'-deoxyadenosine, bearing or not a chlorine atom at the 2-position, to evaluate the influence on the A(1) and A(2A) affinity of steric hindrance and lipophilicity. Furthermore, the guanosine 5'-triphosphate (GTP) shift and the maximal induction of guanosine 5'-(gamma-thio)triphosphate ([S-35]GTP gamma S) binding to G proteins in rat brain membranes were used to determine the intrinsic activity of these nucleosides at the A(1) adenosine receptor. All compounds of the ribose-bearing series proved to be full agonists, the 1-deaza derivatives showing affinities for the Al receptor about 10-fold lower than the corresponding adenosines. On the other hand, all the 2'-deoxyribose derivatives bind to the A(1) receptor with affinities in the high nanomolar range, with the 2-chloro substituted compounds showing slightly higher affinities than the 2-unsubstituted counterparts. In terms of the potencies, the most potent compounds proved to be those bearing four- and five-membered rings. Both GTP shifts and [S-35]-GTP gamma S experiments showed that most of the 2'-deoxyadenosine derivatives are partial agonists, The 2'-deoxyadenosine derivatives which were identified as partial agonists consistently detected fewer Az receptors in the high-affinity state than full agonists. However, it is worthwhile noting that there was not a simple Linear relationship between receptor occupancy and activation. These results indicate that a critical density of A(1) adenosine receptors in the high-affinity state is required for G protein activation.