2',3'-O-isopropylidene-N-cyclopropyl-6-chloropurine-5'-uronamide | 151397-84-1

• 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: 2',3'-O-isopropylidene-N-cyclopropyl-6-chloropurine-5'-uronamide
• 英文别名: (3aR,4R,6S,6aS)-4-(6-chloropurin-9-yl)-N-cyclopropyl-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxole-6-carboxamide
• CAS: 151397-84-1
• 化学式: C₁₆H₁₈ClN₅O₄
• 分子量: 379.803
• InChiKey: KTKGPCBAMVIYOI-JNIYBQFBSA-N

物化性质

• 密度：
  1.83±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  26
• 可旋转键数：
  3
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  100
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  2',3'-O-isopropylidene-N-cyclopropyl-6-chloropurine-5'-uronamide 在 盐酸 、 三乙胺 作用下， 以 乙醇 为溶剂， 反应 51.0h， 生成 (2S,3S,4R,5R)-5-[6-(1-Ethyl-propylamino)-purin-9-yl]-3,4-dihydroxy-tetrahydro-furan-2-carboxylic acid cyclopropylamide
  参考文献：
  名称：

  N6-Substituted N-alkyladenosine-5'-uronamides: bifunctional ligands having recognition groups for A1 and A2 adenosine receptors

  摘要：

  The coronary vasoactivity of N-ethyl-1'-deoxy-1'-(6-amino-9H-purin-9-yl)-beta-D-ribofuranuronamide (NECA, 1) is over 2 orders of magnitude greater than that of adenosine, and the vasoactivity of certain N6-substituted adenosines is as much as 1 order of magnitude greater. Such results suggest that a combination of appropriate modifications at N6 and C-5' might additively augment the agonist potency of adenosine. At low temperatures 1-deoxy-1-(6-chloro-9H-purin-9-yl)-2',3'-O-isopropylidene- beta-D-ribofuranosyl chloride (5), obtained in three steps from inosine, reacts with amines to yield uronamides. The subsequent reaction of such uronamides with amines at elevated temperatures displaces the purine 6-chloro group to yield, after deblocking, N-alkyl(or aryl)-N6-alk(ar)yl-adenosine-5'-uronamides. At the coronary artery A2 receptor the potency of N6-modified analogues of 1 is similar to that of the N6-substituted adenosine, rather than equal to or greater than 1. As agonists in the A2 receptor-mediated stimulation of adenylate cyclase in plasma membranes of PC12 pheochromocytoma cells or human platelets, N6-substituted analogues of 1 are intermediate between the high potency of 1 and the lower potency of the N6-substituted adenosines. At the A1 receptor of rat brain the potency of an N6-substituted analogue of 1 is often greater than that of the corresponding N6-substituted adenosine. At all four receptors, replacing the ethyl group of N-ethyl-N6-3-pentyladenosine-5'-uronamide by larger alkyl groups reduces potency; amides of secondary amines are inactive or have only marginal activity. Analogues of 1 containing a chiral center in the N6 substituent retain the stereoselectivity characteristic of each of the four receptors. Thus, at either A1 or A2 adenosine receptors, adenosine analogues interact with both the N6 and the C-5' receptor regions. However, the effects of N6 and C-5' modifications on potency are less than additive, evidence that the interaction of a substituent with its receptor region influences the interaction of other substituents with their respective receptor regions.

  DOI：

  10.1021/jm00159a020
• 作为产物：
  描述：

  2',3'-O-异亚丙基肌苷-5'-甲酸 在 氯化亚砜 、 N,N-二甲基甲酰胺 作用下， 以 氯仿 为溶剂， 反应 6.33h， 生成 2',3'-O-isopropylidene-N-cyclopropyl-6-chloropurine-5'-uronamide
  参考文献：
  名称：

  N6-Substituted N-alkyladenosine-5'-uronamides: bifunctional ligands having recognition groups for A1 and A2 adenosine receptors

  摘要：

  The coronary vasoactivity of N-ethyl-1'-deoxy-1'-(6-amino-9H-purin-9-yl)-beta-D-ribofuranuronamide (NECA, 1) is over 2 orders of magnitude greater than that of adenosine, and the vasoactivity of certain N6-substituted adenosines is as much as 1 order of magnitude greater. Such results suggest that a combination of appropriate modifications at N6 and C-5' might additively augment the agonist potency of adenosine. At low temperatures 1-deoxy-1-(6-chloro-9H-purin-9-yl)-2',3'-O-isopropylidene- beta-D-ribofuranosyl chloride (5), obtained in three steps from inosine, reacts with amines to yield uronamides. The subsequent reaction of such uronamides with amines at elevated temperatures displaces the purine 6-chloro group to yield, after deblocking, N-alkyl(or aryl)-N6-alk(ar)yl-adenosine-5'-uronamides. At the coronary artery A2 receptor the potency of N6-modified analogues of 1 is similar to that of the N6-substituted adenosine, rather than equal to or greater than 1. As agonists in the A2 receptor-mediated stimulation of adenylate cyclase in plasma membranes of PC12 pheochromocytoma cells or human platelets, N6-substituted analogues of 1 are intermediate between the high potency of 1 and the lower potency of the N6-substituted adenosines. At the A1 receptor of rat brain the potency of an N6-substituted analogue of 1 is often greater than that of the corresponding N6-substituted adenosine. At all four receptors, replacing the ethyl group of N-ethyl-N6-3-pentyladenosine-5'-uronamide by larger alkyl groups reduces potency; amides of secondary amines are inactive or have only marginal activity. Analogues of 1 containing a chiral center in the N6 substituent retain the stereoselectivity characteristic of each of the four receptors. Thus, at either A1 or A2 adenosine receptors, adenosine analogues interact with both the N6 and the C-5' receptor regions. However, the effects of N6 and C-5' modifications on potency are less than additive, evidence that the interaction of a substituent with its receptor region influences the interaction of other substituents with their respective receptor regions.

  DOI：

  10.1021/jm00159a020

文献信息

• N6-Substituted Adenosine Receptor Agonists. Synthesis and Pharmacological Activity as Potent Antinociceptive Agents
  作者：Timur Gungor、Patrice Malabre、Jean-Marie Teulon、Francoise Camborde、Joelle Meignen、Francoise Hertz、Angela Virone-Oddos、Francois Caussade、Alix Cloarec

  DOI：10.1021/jm00051a007

  日期：1994.12

  N6-(indol-3-yl)alkyl derivatives of adenosine were synthesized. The adenosine receptor affinity and the antinociceptive activity of these compounds were assessed in binding studies and the phenylbenzoquinone-induced writhing test. Most of these analogues exhibited a potent analgesic activity without side effects. Among them, compound 3c (UP 202-32) bound to A1 (Ki = 110 nM) and A2 (Ki = 350 nM) adenosine receptors

  合成了腺苷的新型N6-（吲哚-3-基）烷基衍生物。在结合研究和苯基苯醌诱导的扭体试验中评估了这些化合物的腺苷受体亲和力和抗伤害感受活性。这些类似物中的大多数表现出有效的镇痛活性而没有副作用。其中，化合物3c（UP 202-32）以特定方式与A1（Ki = 110 nM）和A2（Ki = 350 nM）腺苷受体结合，因为它不与许多其他受体（尤其是阿片样物质结合位点）相互作用。苯基苯醌试验（ED50 = 3.3 mg / kg口服）中的抗伤害感受活性被8-环戊基茶碱拮抗，表明腺苷能机制是该化合物观察到的镇痛作用的基础。