(1'S,2'R,3'S,4'R,5'S)-4'-[6-(3-chlorobenzylamino)-2-chloropurin-9-yl]-2',3'-O-isopropylidenebicyclo[3.1.0]haxane-1'-carboxylic acid ethyl ester | 793695-63-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 咪唑并嘧啶类
• 英文名称: (1'S,2'R,3'S,4'R,5'S)-4'-[6-(3-chlorobenzylamino)-2-chloropurin-9-yl]-2',3'-O-isopropylidenebicyclo[3.1.0]haxane-1'-carboxylic acid ethyl ester
• 英文别名: (1'S,2'R,3'S,4'R,5'S)-4'-[6-(3-chlorobenzylamino)-2-chloropurin-9-yl]-2',3'-O-isopropylidenebicyclo[3.1.0]hexane-1'-carboxylic acid ethyl ester；(1'S,2'R,3'S,4'S,5'S)-4'-[6-(3-chlorobenzylamino)-2-chloro-purin-9-yl]-2',3'-O-isopropylidene-bicyclo[3.1.0]hexane-1'-carboxylic acid ethyl ester；ethyl (1R,2S,4S,5R,6S)-5-[2-chloro-6-[(3-chlorophenyl)methylamino]purin-9-yl]-8,8-dimethyl-7,9-dioxatricyclo[4.3.0.02,4]nonane-2-carboxylate
• CAS: 793695-63-3
• 化学式: C₂₄H₂₅Cl₂N₅O₄
• 分子量: 518.4
• InChiKey: ORXXVCDCWHCALM-WMNHRYSVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  35
• 可旋转键数：
  7
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  100
• 氢给体数：
  1
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  (1'S,2'R,3'S,4'R,5'S)-4'-[6-(3-chlorobenzylamino)-2-chloropurin-9-yl]-2',3'-O-isopropylidenebicyclo[3.1.0]haxane-1'-carboxylic acid ethyl ester 在 三氟乙酸 作用下， 以 甲醇 、 水 为溶剂， 反应 3.0h， 生成 (1'S,2'R,3'S,4'R,5'S)-4'-[6-(3-chlorobenzylamino)-2-chloropurin-9-yl]-2',3'-dihydroxybicyclo[3.1.0]hexane-1'-carboxylic acid methyl amide
  参考文献：
  名称：

  (N)-Methanocarba 2,N⁶-Disubstituted Adenine Nucleosides as Highly Potent and Selective A₃ Adenosine Receptor Agonists

  摘要：

  A series of ring-constrained (N)-methanocarba-5 '-uronamide 2,N-6-disubstituted adenine nucleosides have been synthesized via Mitsunobu condensation of the nucleobase precursor with a pseudosugar ring containing a 5 '-ester functionality. Following appropriate functionalization of the adenine ring, the ester group was converted to the 5 '-N-methylamide. The compounds, mainly 2-chloro-substituted derivatives, were tested in both binding and functional assays at human adenosine receptors (ARs), and many were found to be highly potent and selective A(3)AR agonists. Selected compounds were compared in binding to the rat A(3)AR to assess their viability for testing in rat disease models. The N-6-(3-chlorobenzyl) and N-6-(3-bromobenzyl) analogues displayed K-i values at the human A(3)AR of 0.29 and 0.38 nM, respectively. Other subnanomolar affinities were observed for the following N-6 derivatives: 2,5-dichlorobenzyl, 5-iodo-2-methoxybenzyl, trans-2-phenyl-1-cyclopropyl, and 2,2-diphenylethyl. Selectivity for the human A3AR in comparison to the A(3)AR was the following (fold): the N-6-(2,2-diphenylethyl) analogue 34 (1900), the N-6-(2,5-dimethoxybenzyl) analogue 26 (1200), the N-6-(2,5-dichlorobenzyl) and N-6-(2-phenyl-1-cyclopropyl) analogues 20 and 33 (1000), and the N-6-(3-substituted benzyl) analogues 17, 18, 28, and 29 (700-900). Typically, even greater selectivity ratios were obtained in comparison with the A(2A) and A(2B)ARs. The (N)-methanocarba-5 '-uronamide analogues were full agonists at the A(3)AR, as indicated by the inhibition of forskolin-stimluated adenylate cyclase at a concentration of 10 mu M. The N-6-(2,2-diphenylethyl) derivative was an A(3)AR agonist in the (N)-methanocarba-5 '-uronamide series, although it was an antagonist in the ribose series. Thus, many of the previously known groups that enhance A(3)AR affinity in the 9-riboside series, including those that reduce intrinsic efficacy, may be adapted to the (N)-methanocarba nucleoside series of full agonists.

  DOI：

  10.1021/jm049580r
• 作为产物：
  描述：

  乙基(1S,2R,3S,4S,5S)-2,3-O-(异亚丙基)-4-羟基双环[3.1.0]己烷羧酸酯 在 偶氮二甲酸二异丙酯 、 三乙胺 、 三苯基膦 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 3.0h， 生成 (1'S,2'R,3'S,4'R,5'S)-4'-[6-(3-chlorobenzylamino)-2-chloropurin-9-yl]-2',3'-O-isopropylidenebicyclo[3.1.0]haxane-1'-carboxylic acid ethyl ester
  参考文献：
  名称：

  (N)-Methanocarba 2,N⁶-Disubstituted Adenine Nucleosides as Highly Potent and Selective A₃ Adenosine Receptor Agonists

  摘要：

  A series of ring-constrained (N)-methanocarba-5 '-uronamide 2,N-6-disubstituted adenine nucleosides have been synthesized via Mitsunobu condensation of the nucleobase precursor with a pseudosugar ring containing a 5 '-ester functionality. Following appropriate functionalization of the adenine ring, the ester group was converted to the 5 '-N-methylamide. The compounds, mainly 2-chloro-substituted derivatives, were tested in both binding and functional assays at human adenosine receptors (ARs), and many were found to be highly potent and selective A(3)AR agonists. Selected compounds were compared in binding to the rat A(3)AR to assess their viability for testing in rat disease models. The N-6-(3-chlorobenzyl) and N-6-(3-bromobenzyl) analogues displayed K-i values at the human A(3)AR of 0.29 and 0.38 nM, respectively. Other subnanomolar affinities were observed for the following N-6 derivatives: 2,5-dichlorobenzyl, 5-iodo-2-methoxybenzyl, trans-2-phenyl-1-cyclopropyl, and 2,2-diphenylethyl. Selectivity for the human A3AR in comparison to the A(3)AR was the following (fold): the N-6-(2,2-diphenylethyl) analogue 34 (1900), the N-6-(2,5-dimethoxybenzyl) analogue 26 (1200), the N-6-(2,5-dichlorobenzyl) and N-6-(2-phenyl-1-cyclopropyl) analogues 20 and 33 (1000), and the N-6-(3-substituted benzyl) analogues 17, 18, 28, and 29 (700-900). Typically, even greater selectivity ratios were obtained in comparison with the A(2A) and A(2B)ARs. The (N)-methanocarba-5 '-uronamide analogues were full agonists at the A(3)AR, as indicated by the inhibition of forskolin-stimluated adenylate cyclase at a concentration of 10 mu M. The N-6-(2,2-diphenylethyl) derivative was an A(3)AR agonist in the (N)-methanocarba-5 '-uronamide series, although it was an antagonist in the ribose series. Thus, many of the previously known groups that enhance A(3)AR affinity in the 9-riboside series, including those that reduce intrinsic efficacy, may be adapted to the (N)-methanocarba nucleoside series of full agonists.

  DOI：

  10.1021/jm049580r

文献信息

• Selective A3 adenosine receptor antagonists derived from nucleosides containing a bicyclo[3.1.0]hexane ring system
  作者：Artem Melman、Ben Wang、Bhalchandra V. Joshi、Zhan-Guo Gao、Sonia de Castro、Cara L. Heller、Soo-Kyung Kim、Lak Shin Jeong、Kenneth A. Jacobson

  DOI：10.1016/j.bmc.2008.08.007

  日期：2008.9

  We have prepared 50-modified derivatives of adenosine and a corresponding (N)-methanocarba nucleoside series containing a bicyclo[3.1.0]hexane ring system in place of the ribose moiety. The compounds were examined in binding assays at three subtypes of adenosine receptors (ARs) and in functional assays at the A3 AR. The H-bonding ability of a group of 9-riboside derivatives containing a 50-uronamide

  我们已经制备了 50 种修饰的腺苷衍生物和相应的 (N)-methanocarba 核苷系列，其中含有双环 [3.1.0] 己烷环系统代替核糖部分。在三种亚型腺苷受体 (AR) 的结合试验和 A3 AR 的功能试验中检查了这些化合物。NH 的修饰降低了一组含有 50-尿醛酰胺部分的 9-核苷衍生物的 H 键合能力；然而，这些衍生物没有显示出作为选择性 A3 AR 拮抗剂所需的活性，如 50-N,N-二甲基脲酰胺所发生的那样。然而，缺乏 40-羟甲基的截短的 (N)-methanocarba 类似物是人类 A3 AR 的高效选择性拮抗剂。这些化合物是使用 50-羧基中间体的还原性自由基脱羧从 D-核糖合成的。一种效率较低的合成方法始于 L-核糖，它类似于 (N)-methanocarba A3AR 激动剂的已发表合成。化合物 33b-39b（N6-3-卤代苄基和相关的芳烷基衍生物）是有效的 A3AR
• Synthesis of Ethyl (1<i>S</i>,2<i>R</i>,3<i>S</i>,4<i>S,</i>5<i>S</i>)-2,3-<i>O</i>-(Isopropylidene)-4-Hydroxy-Bicyclo[3.1.0]Hexane-Carboxylate from L-Ribose: A Versatile Chiral Synthon for Preparation of Adenosine and P2 Receptor Ligands
  作者：Bhalchandra V. Joshi、Artem Melman、Richard L. Mackman、Kenneth A. Jacobson

  DOI：10.1080/15257770701845253

  日期：2008.2.8

  Substitution of the ribose moiety of various nucleosides and nucleotides with the (N)-methanocarba ring system increases the potency and selectivity as ligands at certain subtypes of adenosine and P2 receptors. We have prepared a key intermediate in the synthesis of these derivatives, ethyl (1S,2R,3S,4S,5S)-Z3-O-(isopropylidene)-4-hydroxybicyclo[3.1.0]hexane-carboxylate (15), starting from L-ribose (8) as a readily available, enantiopure building block. L-ribose was converted to the corresponding 5'-iodo derivative (9), which was cleaved reductively with Zn. Improvements were made in subsequent steps corresponding to a published route to biologically important (N)-methanocarba 5'-uronamido nucleosides, and new steps were added to prepare related 5'-nucleotides.
• (<i>N</i>)-Methanocarba 2,<i>N</i>⁶-Disubstituted Adenine Nucleosides as Highly Potent and Selective A₃ Adenosine Receptor Agonists
  作者：Susanna Tchilibon、Bhalchandra V. Joshi、Soo-Kyung Kim、Heng T. Duong、Zhan-Guo Gao、Kenneth A. Jacobson

  DOI：10.1021/jm049580r

  日期：2005.3.1

  A series of ring-constrained (N)-methanocarba-5 '-uronamide 2,N-6-disubstituted adenine nucleosides have been synthesized via Mitsunobu condensation of the nucleobase precursor with a pseudosugar ring containing a 5 '-ester functionality. Following appropriate functionalization of the adenine ring, the ester group was converted to the 5 '-N-methylamide. The compounds, mainly 2-chloro-substituted derivatives, were tested in both binding and functional assays at human adenosine receptors (ARs), and many were found to be highly potent and selective A(3)AR agonists. Selected compounds were compared in binding to the rat A(3)AR to assess their viability for testing in rat disease models. The N-6-(3-chlorobenzyl) and N-6-(3-bromobenzyl) analogues displayed K-i values at the human A(3)AR of 0.29 and 0.38 nM, respectively. Other subnanomolar affinities were observed for the following N-6 derivatives: 2,5-dichlorobenzyl, 5-iodo-2-methoxybenzyl, trans-2-phenyl-1-cyclopropyl, and 2,2-diphenylethyl. Selectivity for the human A3AR in comparison to the A(3)AR was the following (fold): the N-6-(2,2-diphenylethyl) analogue 34 (1900), the N-6-(2,5-dimethoxybenzyl) analogue 26 (1200), the N-6-(2,5-dichlorobenzyl) and N-6-(2-phenyl-1-cyclopropyl) analogues 20 and 33 (1000), and the N-6-(3-substituted benzyl) analogues 17, 18, 28, and 29 (700-900). Typically, even greater selectivity ratios were obtained in comparison with the A(2A) and A(2B)ARs. The (N)-methanocarba-5 '-uronamide analogues were full agonists at the A(3)AR, as indicated by the inhibition of forskolin-stimluated adenylate cyclase at a concentration of 10 mu M. The N-6-(2,2-diphenylethyl) derivative was an A(3)AR agonist in the (N)-methanocarba-5 '-uronamide series, although it was an antagonist in the ribose series. Thus, many of the previously known groups that enhance A(3)AR affinity in the 9-riboside series, including those that reduce intrinsic efficacy, may be adapted to the (N)-methanocarba nucleoside series of full agonists.