1-(3-O-benzyl-2-O,4-C-methylene-α-L-ribofuranosyl)thymine | 296253-29-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1-(3-O-benzyl-2-O,4-C-methylene-α-L-ribofuranosyl)thymine
• 英文别名: (1R,3R,4S,7R)-1-(hydroxymethyl)-7-benzyloxy-3-(thymin-1-yl)-2,5-dioxabicyclo[2.2.1]heptane；(1R,3R,4S,7R)-1-(Hydroxymethyl)-7-benzyloxy-3-(thymin-1-yl)-2,5-dioxabicyclo-[2.2.1]heptane；1-[(1R,3R,4S,7R)-1-(hydroxymethyl)-7-phenylmethoxy-2,5-dioxabicyclo[2.2.1]heptan-3-yl]-5-methylpyrimidine-2,4-dione
• CAS: 296253-29-7
• 化学式: C₁₈H₂₀N₂O₆
• 分子量: 360.367
• InChiKey: INUHCZCTBOPIRO-GARXJVFOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.3
• 重原子数：
  26
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  97.3
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  1-(3-O-benzyl-2-O,4-C-methylene-α-L-ribofuranosyl)thymine 在 palladium dihydroxide 吡啶 、 甲酸铵 、 N,N-二异丙基乙胺 、 三氯氧磷 作用下， 以 1,4-二氧六环 、 甲醇 、 乙腈 为溶剂， 反应 7.5h， 生成 1-[3-O-acetyl-5-O-(4,4'-dimethoxytrityl)-2-O,4-C-methylene-α-L-ribofuranosyl]-5-methyl-4-(1,2,4-triazol-1-yl)-2-oxypyrimidine
  参考文献：
  名称：

  Conformationally restricted triplex-forming oligonucleotides (TFOs). Binding properties of α-l-LNA and introduction of the N7-glycosylated LNA-guanosine

  摘要：

  The method for scaled-up production of alpha-L-LNA phosphoramidite building blocks containing thymine and 5-methylcytosine nucleobases is described. Binding properties of pyrimidine TFOs modified with alpha-L-LNA are reported. In contrast to LNA TFOs, the fully modified a-L-LNA forms a stable triplex with a model DNA duplex. Pyrimidine DNA/LNA/alpha-L-LNA chimeras also efficiently hybridize with a model DNA duplex in the parallel mode. LNA nucleoside containing unnatural N-7-glycosylated guanine (LNA-(7) G) was synthesized by a convergent method and incorporated into LNA oligonucleotides. The triplex-forming alternating DNA/LNA oligonucleotides containing a single LNA-(7) G modification instead of internal LNA-mC demonstrate improved pH-dependent properties. The single LNA-(7) G modification can also discriminatively reduce competitive binding of TFOs to natural nucleic acids in the antiparallel duplex mode. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2006.04.016
• 作为产物：
  描述：

  3-O-benzyl-5-O-(methanesulfonyl)-4-C-[[(methanesulfonyl)oxy]methyl]-1,2-O-isopropylidene-β-L-threo-pentofuranose 在 吡啶 、 盐酸 、 sodium hydroxide 、 N,O-双三甲硅基乙酰胺 、 硫酸 、 溶剂黄146 、 苯甲醇钠 作用下， 以 甲醇 、 二甲基亚砜 、 乙腈 为溶剂， 反应 50.5h， 生成 1-(3-O-benzyl-2-O,4-C-methylene-α-L-ribofuranosyl)thymine
  参考文献：
  名称：

  Conformationally restricted triplex-forming oligonucleotides (TFOs). Binding properties of α-l-LNA and introduction of the N7-glycosylated LNA-guanosine

  摘要：

  The method for scaled-up production of alpha-L-LNA phosphoramidite building blocks containing thymine and 5-methylcytosine nucleobases is described. Binding properties of pyrimidine TFOs modified with alpha-L-LNA are reported. In contrast to LNA TFOs, the fully modified a-L-LNA forms a stable triplex with a model DNA duplex. Pyrimidine DNA/LNA/alpha-L-LNA chimeras also efficiently hybridize with a model DNA duplex in the parallel mode. LNA nucleoside containing unnatural N-7-glycosylated guanine (LNA-(7) G) was synthesized by a convergent method and incorporated into LNA oligonucleotides. The triplex-forming alternating DNA/LNA oligonucleotides containing a single LNA-(7) G modification instead of internal LNA-mC demonstrate improved pH-dependent properties. The single LNA-(7) G modification can also discriminatively reduce competitive binding of TFOs to natural nucleic acids in the antiparallel duplex mode. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2006.04.016

文献信息

• α-<scp>l</scp>-<i>ribo</i>-Configured Locked Nucleic Acid (α-L-LNA):  Synthesis and Properties
  作者：Mads D. Sørensen、Lisbet Kværnø、Torsten Bryld、Anders E. Håkansson、Birgit Verbeure、Gilles Gaubert、Piet Herdewijn、Jesper Wengel

  DOI：10.1021/ja0168763

  日期：2002.3.1

  The syntheses of monomeric nucleosides and 3‘-O-phosphoramidite building blocks en route to α-l-ribo-configured locked nucleic acids (α-L-LNA), composed entirely of α-L-LNA monomers (α-l-ribo configuration) or of a mixture of α-L-LNA and DNA monomers (β-d-ribo configuration), are described and the α-L-LNA oligomers are studied. Bicyclic 5-methylcytosin-1-yl and adenin-9-yl nucleoside derivatives have

  单体核苷和 3'-O-亚磷酰胺结构单元的合成在生成 α-l-核糖构型锁核酸 (α-L-LNA) 的过程中，完全由 α-L-LNA 单体（α-l-核糖核酸）组成构型）或 α-L-LNA 和 DNA 单体的混合物（β-d-核糖构型），进行了描述，并研究了 α-L-LNA 低聚物。已制备双环 5-甲基胞嘧啶-1-基和腺嘌呤-9-基核苷衍生物，亚磷酰胺方法已用于自动寡聚化，从而产生 α-L-LNA 寡聚体。结合研究表明可以非常有效地识别单链 DNA 和 RNA 靶寡核苷酸链。因此，包含 α-L-LNA 单体和 DNA 单体混合物（“mix-mer α-L-LNA”）的立体不规则 α-L-LNA 11-mers 显示每次修改的 ΔTm 值为 +1 至 +3 °C与相应的未修饰 DNA·DNA 和 DNA·RNA 参考双链体相比，DNA 和 +4 至 +5°C 的 RNA。立体规则 f 每次修改的相应
• Convenient Syntheses of 7-Hydroxy-1-(hydroxymethyl)- 3-(thymin-1-yl)-2,5-dioxabicyclo[2.2.1]heptanes:  α-<scp>l</scp>-Ribo- and α-<scp>l</scp>-Xylo-Configured LNA Nucleosides
  作者：Anders E. Håkansson、Alexei A. Koshkin、Mads D. Sørensen、Jesper Wengel

  DOI：10.1021/jo000232g

  日期：2000.8.1

  Synthesis of the diastereoisomeric LNA (locked nucleic acid) nucleosides 1-(2-O,4-C-methylene-alpha-L-ribofuranosyl)thymine (6) and 1-(2-O,4-C-methylene-alpha-L-xylofuranosyl)thymine (13) are reported via convenient reaction cascades from di-O-p-toluenesulfonyl and tri-O-methanesulfonyl nucleoside derivatives 3, 7, and 10.

  非对映异构LNA（锁核酸）核苷1-（2-O，4-C-亚甲基-α-L-呋喃呋喃糖基）胸腺嘧啶（6）和1-（2-O，4-C-亚甲基-α-通过二-对-甲苯磺酰基和三-O-甲磺酰基核苷衍生物3、7和10的便捷反应级联报道了L-木呋喃糖基）胸腺嘧啶（13）。
• L-Ribo-LNA analogues
  申请人：——

  公开号：US20030087230A1

  公开（公告）日：2003-05-08

  Provided are L-ribo bicyclic nucleotide compounds as well as syntheses of such compounds The nucleoside compounds of the invention are useful in forming oligonucleotides that can produce nucleobase specific duplexes with complementary single stranded and double stranded nucleic acids.

  提供L-核苷酸双环化合物及其合成方法。本发明的核苷酸化合物可用于形成寡核苷酸，可与互补的单链和双链核酸产生核碱基特异性的双链。
• L-ribo-LNA analogues
  申请人：Exiqon A/S

  公开号：US07053207B2

  公开（公告）日：2006-05-30

  Provided are L-ribo bicyclic nucleotide compounds as well as syntheses of such compounds. The nucleoside compounds of the invention are useful in forming oligonucleotides that can produce nucleobase specific duplexes with complementary single stranded and double stranded nucleic acids.

  本发明提供了L-核苷酸双环化合物及其合成方法。该发明的核苷酸化合物可用于形成寡核苷酸，其可以与互补的单链和双链核酸产生特异性的核碱基双链。
• L-RIBO-LNA ANALOGUES
  申请人：Santaris Pharma A/S

  公开号：EP1178999B1

  公开（公告）日：2007-03-14