9-(3,5-Di-O-trityl-β-D-arabinofuranosyl)-N⁶-trityladenine | 137965-06-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 三苯基化合物
• 英文名称: 9-(3,5-Di-O-trityl-β-D-arabinofuranosyl)-N⁶-trityladenine
• 英文别名: N⁶-triphenylmethyl-9-(3',5'-bis-O-triphenylmethyl-β-D-arabinofuranosyl)adenine；(2R,3S,4S,5R)-2-[6-(tritylamino)purin-9-yl]-4-trityloxy-5-(trityloxymethyl)oxolan-3-ol
• CAS: 137965-06-1
• 化学式: C₆₇H₅₅N₅O₄
• 分子量: 994.205
• InChiKey: LACWMBVCGNUXDY-QKVOPICMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  13.3
• 重原子数：
  76
• 可旋转键数：
  17
• 环数：
  12.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  104
• 氢给体数：
  2
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  9-(3,5-Di-O-trityl-β-D-arabinofuranosyl)-N⁶-trityladenine 在 吡啶 、 二乙胺基三氟化硫 作用下， 以 二氯甲烷 为溶剂， 以59.5%的产率得到2'-Deoxy-2'-fluoro-3',5'-di-O-trityl-N⁶-trityladenosine
  参考文献：
  名称：

  A synthesis of 9-(2-deoxy-2-fluoro-.beta.-D-arabinofuranosyl)adenine and -hypoxanthine. An effect of C3'-endo to C2'-endo conformational shift on the reaction course of 2'-hydroxyl group with DAST

  摘要：

  O3',O5',N6-Tritrityladenosine (6), 3',5'-di-O-trityl-N1-benzylinosine (15), and 3',5'-di-O-tritylinosine (18) were prepared and subjected to nucleophilic reaction with DAST. Thus, 6 afforded 2'-beta-fluorine-substituted nucleoside 11 along with the isomeric 2-deoxy-2-(N-trityladenin-3-yl)-3,5-di-O-trityl-alpha-D-arabinofuranosyl fluoride (12). Nucleoside 15, under the same treatment with DAST, gave the desired 2'-fluoroarabino derivative 16 exclusively in high yield. Although 18 was converted into the 2'-beta-fluoro product 19 under the similar conditions, the yield was low. A plausible mechanism of formation of 12 is discussed. Deprotection of 11 and 16 afforded the desired 9-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)adenine (1) and -hypoxanthine (2), respectively, in high yield. The conformational influence of sugar protecting groups on the rate of nucleophilic substitution against elimination is discussed. Treatment of O3',O5',N1-benzylinosine (20) with DAST afforded only the elimination products 9-(3',5'-di-O-benzyl-beta-D-erythro-pent-2-enofuranosyl)-1-benzylhypoxanthine (22) and 3-(benzyloxy)-2-[(benzyloxy)methyl]furan (23). On the other hand, 9-(3,5-di-O-trityl-beta-D-arabinofuranosyl)adenine (26) (prepared from 6 by triflyation followed by NaOAc treatment and deacetylation) afforded a mixture from which 2'-deoxy-2'-fluoroadenosine (27) and 9-(2-deoxy-3,5-di-O-trityl-D-erythro-pent-1-enofuranosyl)-N6-trityladenine (28) were isolated in 60 and 30% yield, respectively. O2',O5',N6-Tritrityladenosine (7) was selectively detritylated with HCO2H/Et2O to give O2',N6-ditrityladenosine (30), which, upon treatment with benzyl chloride/KOH, afforded 3',5'-di-O-benzyl-O2',N6-ditrityladenosine (31). 9-(3,5-Di-O-benzyl-beta-D-arabinofuranosyl)adenine (35) was prepared from 31 by further detritylation with CF3CO2H/CHCl3 and triflyation followed by NaOAc treatment and deacetylation of the product. Treatment of 35 with DAST followed by hydrogenolytic debenzylation afforded 2'-deoxy-2'-fluoroadenosine (3) in high yield. The three-step synthesis described herein, albeit about 10% overall yield, is far superior to the currently available multistep procedures which give the desired 2'-fluoroarabinosylpurines in much less overall yields.

  DOI：

  10.1021/jo00028a030
• 作为产物：
  描述：

  2'-O-Triflyl-3',5'-di-O-trityl-N⁶-trityladenosine 在 氨 作用下， 以 甲醇 、 六甲基磷酰三胺 为溶剂， 反应 28.0h， 生成 9-(3,5-Di-O-trityl-β-D-arabinofuranosyl)-N⁶-trityladenine
  参考文献：
  名称：

  A synthesis of 9-(2-deoxy-2-fluoro-.beta.-D-arabinofuranosyl)adenine and -hypoxanthine. An effect of C3'-endo to C2'-endo conformational shift on the reaction course of 2'-hydroxyl group with DAST

  摘要：

  O3',O5',N6-Tritrityladenosine (6), 3',5'-di-O-trityl-N1-benzylinosine (15), and 3',5'-di-O-tritylinosine (18) were prepared and subjected to nucleophilic reaction with DAST. Thus, 6 afforded 2'-beta-fluorine-substituted nucleoside 11 along with the isomeric 2-deoxy-2-(N-trityladenin-3-yl)-3,5-di-O-trityl-alpha-D-arabinofuranosyl fluoride (12). Nucleoside 15, under the same treatment with DAST, gave the desired 2'-fluoroarabino derivative 16 exclusively in high yield. Although 18 was converted into the 2'-beta-fluoro product 19 under the similar conditions, the yield was low. A plausible mechanism of formation of 12 is discussed. Deprotection of 11 and 16 afforded the desired 9-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)adenine (1) and -hypoxanthine (2), respectively, in high yield. The conformational influence of sugar protecting groups on the rate of nucleophilic substitution against elimination is discussed. Treatment of O3',O5',N1-benzylinosine (20) with DAST afforded only the elimination products 9-(3',5'-di-O-benzyl-beta-D-erythro-pent-2-enofuranosyl)-1-benzylhypoxanthine (22) and 3-(benzyloxy)-2-[(benzyloxy)methyl]furan (23). On the other hand, 9-(3,5-di-O-trityl-beta-D-arabinofuranosyl)adenine (26) (prepared from 6 by triflyation followed by NaOAc treatment and deacetylation) afforded a mixture from which 2'-deoxy-2'-fluoroadenosine (27) and 9-(2-deoxy-3,5-di-O-trityl-D-erythro-pent-1-enofuranosyl)-N6-trityladenine (28) were isolated in 60 and 30% yield, respectively. O2',O5',N6-Tritrityladenosine (7) was selectively detritylated with HCO2H/Et2O to give O2',N6-ditrityladenosine (30), which, upon treatment with benzyl chloride/KOH, afforded 3',5'-di-O-benzyl-O2',N6-ditrityladenosine (31). 9-(3,5-Di-O-benzyl-beta-D-arabinofuranosyl)adenine (35) was prepared from 31 by further detritylation with CF3CO2H/CHCl3 and triflyation followed by NaOAc treatment and deacetylation of the product. Treatment of 35 with DAST followed by hydrogenolytic debenzylation afforded 2'-deoxy-2'-fluoroadenosine (3) in high yield. The three-step synthesis described herein, albeit about 10% overall yield, is far superior to the currently available multistep procedures which give the desired 2'-fluoroarabinosylpurines in much less overall yields.

  DOI：

  10.1021/jo00028a030

文献信息

• Design, Synthesis and Anti Flaviviridae Activity of N6-, 5',3'-O- and 5',2'-O-Substituted Adenine Nucleoside Analogs
  作者：Angela Angusti、Stefano Manfredini、Elisa Durini、Nunzia Ciliberti、Silvia Vertuani、Nicola Solaroli、Sabrina Pricl、Marco Ferrone、Maurizio Fermeglia、Roberta Loddo、Barbara Secci、Anna Visioli、Tiziana Sanna、Gabriella Collu、Margherita Pezzullo、Paolo La Colla

  DOI：10.1248/cpb.56.423

  日期：——

  During a random screening of representative libraries of nucleoside analogues we discovered that the adenine derivatives FEVB28 and FEG118 were Flaviviridae inhibitors endowed with potency comparable, if not superior, to that of ribavirin. Those studies prompted us to design a new class of protected nucleoside analogs, reported herein, which displays interesting anti-bovine viral diarrhea virus (BVDV)

  在对代表性核苷类似物文库的随机筛选中，我们发现腺嘌呤衍生物FEVB28和FEG118是黄病毒科抑制剂，具有与利巴韦林相当的效力，甚至更高。这些研究促使我们设计了本文所报道的新型受保护的核苷类似物，其在基于细胞的测定中显示出有趣的抗牛病毒性腹泻病毒（BVDV）活性和低细胞毒性（4，23，29 EC（50）：14分别为11、26 microM，CC（50）> 100 microM）和针对BVDV的RNA依赖性RNA聚合酶（RdRp）的酶分析中的显着活性（分别为4、23、29，RdRp抑制活性27、16、15 microM） 。