(1'S,2'R,3'S,4'R,5'S)-4'-[6-(2,5-dimethoxybenzylamino)-2-chloropurin-9-yl]-2',3'-O-isopropylidenebicyclo[3.1.0]haxane-1'-carboxylic acid ethyl ester | 793695-70-2

• 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-(2,5-dimethoxybenzylamino)-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'S,5'S)-4'-[6-(2,5-dimethoxy-benzylamino)-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-[(2,5-dimethoxyphenyl)methylamino]purin-9-yl]-8,8-dimethyl-7,9-dioxatricyclo[4.3.0.02,4]nonane-2-carboxylate
• CAS: 793695-70-2
• 化学式: C₂₆H₃₀ClN₅O₆
• 分子量: 544.007
• InChiKey: VIIXZNNQGMXUST-XONNTMCPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  38
• 可旋转键数：
  9
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.54
• 拓扑面积：
  119
• 氢给体数：
  1
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  (1'S,2'R,3'S,4'R,5'S)-4'-[6-(2,5-dimethoxybenzylamino)-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 MRS 3602
  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-(2,5-dimethoxybenzylamino)-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

• (<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.