5'-O-(tert-butyldimethylsilyl)-2'-O-(p-tolylsulfonyl)adenosine | 115094-43-4

• 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: 5'-O-(tert-butyldimethylsilyl)-2'-O-(p-tolylsulfonyl)adenosine
• 英文别名: 5'-O-tert-butyldimethylsilyl-2'-O-p-tolylsulfonyladenosine；5'-O-(tert-butyldimethylsilyl)-2'-O-tosyladenosine；5'-O-tert-butyldimethylsilyl-2'-O-tosyladenosine；Adenosine, 5'-O-((1,1-dimethylethyl)dimethylsilyl)-, 2'-(4-methylbenzenesulfonate；[(2R,3R,4R,5R)-2-(6-aminopurin-9-yl)-5-[[tert-butyl(dimethyl)silyl]oxymethyl]-4-hydroxyoxolan-3-yl] 4-methylbenzenesulfonate
• CAS: 115094-43-4
• 化学式: C₂₃H₃₃N₅O₆SSi
• 分子量: 535.696
• InChiKey: UECWDUYKBZLPTO-WGQQHEPDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.77
• 重原子数：
  36
• 可旋转键数：
  8
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.52
• 拓扑面积：
  160
• 氢给体数：
  2
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  5'-O-(tert-butyldimethylsilyl)-2'-O-(p-tolylsulfonyl)adenosine 在 4-二甲氨基吡啶 、 偶氮二异丁腈 、 三正丁基氢锡 作用下， 以 甲苯 、 乙腈 为溶剂， 反应 8.5h， 生成 Tos(-2)[TBDMS(-5)]3-deoxy-D-eryPenf(b)-adenin-9-yl
  参考文献：
  名称：

  Nucleic Acid Related Compounds. 91. Biomimetic Reactions Are in Harmony with Loss of 2‘-Substituents as Free Radicals (Not Anions) during Mechanism-Based Inactivation of Ribonucleotide Reductases. Differential Interactions of Azide, Halogen, and Alkylthio Groups with Tributylstannane and Triphenylsilane¹

  摘要：

  The initial step in the mechanism-based inactivation of ribonucleotide reductases by 2'-chloro-2'-deoxynucleotides is abstraction of H3' by a proximal free radical on the enzyme. The C3' radical is postulated to undergo spontaneous loss of chloride, and the resulting cationic radical loses a proton to give a 3'-keto intermediate. Successive beta-eliminations produce a Michael acceptor which causes inactivation. This hypothesis would predict rapid loss of mesylate or tosylate anions from C2', but sluggish loss of azide or thiomethoxide. in contrast, loss of azido and methylthio radicals from C2' should occur readily whereas homolysis to give (methyl or tolylsulfonyl)oxy and fluoro radicals should be energetically prohibitive. Protected 3'-O-(phenoxythiocarbonyl)-2'-substitute nucleosides were treated with tributylstannane/AIBN or triphenylsilane/dibenzoyl peroxide in refluxing toluene. The 2'-O-(mesyl and tosyl) and 2'-fluoro compounds underwent direct radical-mediated hydrogenolysis of the thionocarbonate group to give 3'-deoxy-2'-substituted products, whereas 2'-(azido, bromo, chloro, iodo, and methylthio)-3'-thionocarbonates gave 2',3'-didehydro-2',3'-dideoxy derivatives via loss of 2'-substituents from an incipient C3' radical. These results are in harmony with loss of radicals, but not anions, from C2'. The well-known radical-mediated hydrogenolytic cleavage of halogen and methylthio (slow) groups from C2' of the S'-hydroxy (unprotected) precursors and reduction of 2'-azides to amines occurred with tributylstannane/AIBN. Triphenylsilane/dibenzoyl peroxide gave parallel (but slower) hydrogenolysis with the 2'-(iodo, bromo, and methylthio) compounds, but cleavage of the 2'-chloro group was very slow and no reduction of 2'-azides to amines was detected. Rather, the latter system effected slow hydrogenolytic removal of the 2'-azido group. Thus, chemoselective differentiation of certain functional groups is possible with triphenylsilane and tributylstannane. Reduction of azides to amines with tributylstannane is known, but hydrogenolytic deazidation (slow) with triphenylsilane in the absence of amine formation appears to be novel.

  DOI：

  10.1021/ja962117m
• 作为产物：
  描述：

  3,5-O-(1,1,3,3-四异丙基-1,3-二硅氧烷)腺苷 在 吡啶 、 氟化铵 作用下， 以 甲醇 为溶剂， 生成 5'-O-(tert-butyldimethylsilyl)-2'-O-(p-tolylsulfonyl)adenosine
  参考文献：
  名称：

  Nucleic Acid Related Compounds. 91. Biomimetic Reactions Are in Harmony with Loss of 2‘-Substituents as Free Radicals (Not Anions) during Mechanism-Based Inactivation of Ribonucleotide Reductases. Differential Interactions of Azide, Halogen, and Alkylthio Groups with Tributylstannane and Triphenylsilane¹

  摘要：

  The initial step in the mechanism-based inactivation of ribonucleotide reductases by 2'-chloro-2'-deoxynucleotides is abstraction of H3' by a proximal free radical on the enzyme. The C3' radical is postulated to undergo spontaneous loss of chloride, and the resulting cationic radical loses a proton to give a 3'-keto intermediate. Successive beta-eliminations produce a Michael acceptor which causes inactivation. This hypothesis would predict rapid loss of mesylate or tosylate anions from C2', but sluggish loss of azide or thiomethoxide. in contrast, loss of azido and methylthio radicals from C2' should occur readily whereas homolysis to give (methyl or tolylsulfonyl)oxy and fluoro radicals should be energetically prohibitive. Protected 3'-O-(phenoxythiocarbonyl)-2'-substitute nucleosides were treated with tributylstannane/AIBN or triphenylsilane/dibenzoyl peroxide in refluxing toluene. The 2'-O-(mesyl and tosyl) and 2'-fluoro compounds underwent direct radical-mediated hydrogenolysis of the thionocarbonate group to give 3'-deoxy-2'-substituted products, whereas 2'-(azido, bromo, chloro, iodo, and methylthio)-3'-thionocarbonates gave 2',3'-didehydro-2',3'-dideoxy derivatives via loss of 2'-substituents from an incipient C3' radical. These results are in harmony with loss of radicals, but not anions, from C2'. The well-known radical-mediated hydrogenolytic cleavage of halogen and methylthio (slow) groups from C2' of the S'-hydroxy (unprotected) precursors and reduction of 2'-azides to amines occurred with tributylstannane/AIBN. Triphenylsilane/dibenzoyl peroxide gave parallel (but slower) hydrogenolysis with the 2'-(iodo, bromo, and methylthio) compounds, but cleavage of the 2'-chloro group was very slow and no reduction of 2'-azides to amines was detected. Rather, the latter system effected slow hydrogenolytic removal of the 2'-azido group. Thus, chemoselective differentiation of certain functional groups is possible with triphenylsilane and tributylstannane. Reduction of azides to amines with tributylstannane is known, but hydrogenolytic deazidation (slow) with triphenylsilane in the absence of amine formation appears to be novel.

  DOI：

  10.1021/ja962117m

文献信息

• Extremely mild and selective method for hydrolysis of tosyl esters by photo-sensitized single electron transfer reactions.
  作者：Atsushi NISHIDA、Tatsuo HAMADA、Osamu YONEMITSU

  DOI：10.1248/cpb.38.2977

  日期：——

  Tosyl esters were hydrolyzed by irradiation with ultraviolet light (>330nm) under photo-sensitized conditions. 1.5-Dimethoxynaphthalene and (4, 8-dimethoxynaphthyl)propionic acid were effective for the transformation in aqueous acetonitrile in the presence of hydrazine. The reaction was successfully applied to the hydrolysis of tosylates of sugars and nucleosides.

  在光敏条件下，用紫外线（>330 纳米）照射对甲苯磺酸酯会发生水解。在肼存在的乙腈水溶液中，1.5-二甲氧基萘和 (4，8-二甲氧基萘基)丙酸对转化有效。该反应成功地应用于糖和核苷的对甲苯磺酸盐的水解。
• Maguire, Anita R.; Meng, Wei-dong; Roberts, Stanley M., Journal of the Chemical Society. Perkin transactions I, 1993, # 15, p. 1795 - 1808
  作者：Maguire, Anita R.、Meng, Wei-dong、Roberts, Stanley M.、Willetts, Andrew J.

  DOI：——

  日期：——
• Hydrolysis of tosyl esters initiated by an electron transfer from photoexcited electron-rich aromatic compounds
  作者：Atsushi Nishida、Tatsuo Hamada、Osamu Yonemitsu

  DOI：10.1021/jo00249a058

  日期：1988.7
• Nucleic Acid Related Compounds. 127. Selective N-Deacylation of N,O-Peracylated Nucleosides in Superheated Methanol¹
  作者：Ireneusz Nowak、Martin Conda-Sheridan、Morris J. Robins

  DOI：10.1021/jo051256w

  日期：2005.9.1

  Solutions of peracylated adenosine, cytidine, and related nucleoside derivatives undergo selective N-deacylation upon heating at elevated temperatures (oil bath >= 105 degrees C) in methanol. An increase in the bulk of the N-acyl group has little effect on the rate of N-deacylation but increases the N/O selectivity ratio. Extended heating is required for N-deacylation with arylcarboxylic acid derivatives. Contamination with acidic or basic reagent residues is avoided.
• Nucleic Acid Related Compounds. 91. Biomimetic Reactions Are in Harmony with Loss of 2‘-Substituents as Free Radicals (Not Anions) during Mechanism-Based Inactivation of Ribonucleotide Reductases. Differential Interactions of Azide, Halogen, and Alkylthio Groups with Tributylstannane and Triphenylsilane¹
  作者：Morris J. Robins、Stanislaw F. Wnuk、Amelia E. Hernández-Thirring、Mirna C. Samano

  DOI：10.1021/ja962117m

  日期：1996.1.1

  The initial step in the mechanism-based inactivation of ribonucleotide reductases by 2'-chloro-2'-deoxynucleotides is abstraction of H3' by a proximal free radical on the enzyme. The C3' radical is postulated to undergo spontaneous loss of chloride, and the resulting cationic radical loses a proton to give a 3'-keto intermediate. Successive beta-eliminations produce a Michael acceptor which causes inactivation. This hypothesis would predict rapid loss of mesylate or tosylate anions from C2', but sluggish loss of azide or thiomethoxide. in contrast, loss of azido and methylthio radicals from C2' should occur readily whereas homolysis to give (methyl or tolylsulfonyl)oxy and fluoro radicals should be energetically prohibitive. Protected 3'-O-(phenoxythiocarbonyl)-2'-substitute nucleosides were treated with tributylstannane/AIBN or triphenylsilane/dibenzoyl peroxide in refluxing toluene. The 2'-O-(mesyl and tosyl) and 2'-fluoro compounds underwent direct radical-mediated hydrogenolysis of the thionocarbonate group to give 3'-deoxy-2'-substituted products, whereas 2'-(azido, bromo, chloro, iodo, and methylthio)-3'-thionocarbonates gave 2',3'-didehydro-2',3'-dideoxy derivatives via loss of 2'-substituents from an incipient C3' radical. These results are in harmony with loss of radicals, but not anions, from C2'. The well-known radical-mediated hydrogenolytic cleavage of halogen and methylthio (slow) groups from C2' of the S'-hydroxy (unprotected) precursors and reduction of 2'-azides to amines occurred with tributylstannane/AIBN. Triphenylsilane/dibenzoyl peroxide gave parallel (but slower) hydrogenolysis with the 2'-(iodo, bromo, and methylthio) compounds, but cleavage of the 2'-chloro group was very slow and no reduction of 2'-azides to amines was detected. Rather, the latter system effected slow hydrogenolytic removal of the 2'-azido group. Thus, chemoselective differentiation of certain functional groups is possible with triphenylsilane and tributylstannane. Reduction of azides to amines with tributylstannane is known, but hydrogenolytic deazidation (slow) with triphenylsilane in the absence of amine formation appears to be novel.