1-[2-O-acetyl-3-O-benzyl-5-O-(methylsulfonyl)-4-C-(methylsulfonyloxymethyl)-α-L-threo-pentofuranosyl]thymine | 601512-74-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1-[2-O-acetyl-3-O-benzyl-5-O-(methylsulfonyl)-4-C-(methylsulfonyloxymethyl)-α-L-threo-pentofuranosyl]thymine
• 英文别名: 1-(2-O-acetyl-3-O-benzyl-4-C-methanesulfonyloxymethyl-5-O-methanesulfonyl-α-L-threo-pentofuranosyl)thymine；[(2R,3R,4R)-2-(5-methyl-2,4-dioxopyrimidin-1-yl)-5,5-bis(methylsulfonyloxymethyl)-4-phenylmethoxyoxolan-3-yl] acetate
• CAS: 601512-74-7
• 化学式: C₂₂H₂₈N₂O₁₂S₂
• 分子量: 576.603
• InChiKey: KQYCWEFAOAPBNM-QWFCFKBJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.5
• 重原子数：
  38
• 可旋转键数：
  12
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  198
• 氢给体数：
  1
• 氢受体数：
  12

反应信息

• 作为反应物：
  描述：

  1-[2-O-acetyl-3-O-benzyl-5-O-(methylsulfonyl)-4-C-(methylsulfonyloxymethyl)-α-L-threo-pentofuranosyl]thymine 在 吡啶 、 4-二甲氨基吡啶 、 sodium hydroxide 、 15-冠醚-5 、 硫酸 、 氨 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 三甲基膦 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 丙酮 、 乙腈 为溶剂， 反应 18.0h， 生成 (1R,3R,4R,7R)-1-(benzoyloxymethyl)-7-benzyloxy-3-(thymin-1-yl)-2-oxa-5-azabicyclo[2.2.1]heptane
  参考文献：
  名称：

  Xylo-Configured oligonucleotides (XNA, xylo nucleic acid): synthesis of conformationally restricted derivatives and hybridization towards DNA and RNA complements

  摘要：

  Xylo-Configured oligonucleotides (XNA) containing a novel conformationally restricted 2'-deoxy-2'-fluoro-beta-D-xylofuranosyl nucleotide monomer, a novel conformationally locked 2'-amino-2'-deoxy-2'-N,4'-C-methylene-beta-D-xylofuranosyl nucleotide monomer. and a known 2'-deoxy-beta-D-xylofuranosyl nucleotide monomer (XNA monomers) have been synthesized and their hybridization towards DNA and RNA complements studied. Thermal denaturation studies of nine-mer mixed-base sequences composed of a mixture of XNA monomers and DNA monomers revealed preferential hybridization towards RNA complements relative to DNA complements. For 14-mer homo-thymine XNAs containing thirteen XNA monomers, stable complexes towards single-stranded DNA and RNA were formed at pH 7. Gel-shift experiments revealed these complexes to involve at least two XNA strands per DNA or RNA target strand. (C) 2003 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0960-894x(03)00441-4
• 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 N,O-双三甲硅基乙酰胺 、 硫酸 、 溶剂黄146 作用下， 以 乙腈 为溶剂， 反应 7.5h， 生成 1-[2-O-acetyl-3-O-benzyl-5-O-(methylsulfonyl)-4-C-(methylsulfonyloxymethyl)-α-L-threo-pentofuranosyl]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

• XNA (xylo Nucleic Acid): A Summary and New Derivatives
  作者：B. Ravindra Babu、Raunak、Nicolai E. Poopeiko、Martin Juhl、Andrew D. Bond、Virinder S. Parmar、Jesper Wengel

  DOI：10.1002/ejoc.200500023

  日期：2005.6

  furanose conformation. Besides, an efficient synthesis of known xylo-LNA phosphoramidite 19, required for the incorporation of 1-(2'-O,4'-C-methylene-β-D-xylofuranosyl)thymine (monomer L) is described. For comparison, hydridization data of various XNAs reported in the literature are included in the discussion section. The thermal denaturation studies show that XNAs containing conformationally locked

  完全修饰的同型嘧啶 2'-脱氧-木核酸 (dXNA) 与互补的 DNA/RNA 形成三螺旋，其热稳定性与相应的 DNA:DNA 和 DNA:RNA 双链体的热稳定性相当。然而，在 DNA 链中插入单个或几个 dXNA 单体会显着降低双链体的稳定性。已知 dXNA 单体在溶液中主要采用 N 型呋喃糖构象。为了提高结合亲和力，已经合成了七种糖修饰的 XNA 单体（H、F、N、M、K、P 和 Q），并研究了它们对 DNA 和 RNA 互补物杂交的影响。预计引入 2'-氟和 2'-羟基取代基会导致对衍生自 1-(2'-deoxy-2' 的单体 F 的 C3'-内型呋喃糖构象的构象限制 -氟-β-D-呋喃木糖基）胸腺嘧啶和衍生自 1-（β-D-呋喃木糖基）胸腺嘧啶的单体 H。存在面向小沟的官能团，如 1-(2'-amino-2'-deoxy-2'-N,4'-C-methylene-β-D-xylofuranosyl)thymine
• Synthesis and Hybridization Studies of 2‘-Amino-α-L-LNA and Tetracyclic “Locked LNA”
  作者：T. Santhosh Kumar、Andreas S. Madsen、Jesper Wengel、Patrick J. Hrdlicka

  DOI：10.1021/jo060331f

  日期：2006.5.1

  render 2‘-amino-α-L-LNA a promising building block for nucleic acid based nanobiotechnology and therapeutics. A slight modification in strategy facilitated the synthesis of the corresponding phosphoramidite building blocks of Michael adducts, which due to their tetracyclic skeletons exhibit a conformationally restricted furanose ring and glycosidic torsion angle (anti-range). Incorporation of such

  已经开发了一种收敛到新型锁定核酸的途径，即2'-氨基-α-L-LNA。到相应的胸腺嘧啶亚磷酰胺结构单元的优化合成路线，从起始二醇开始，经过15个步骤，总收率为4％。关键合成步骤包括：（a）引入的C2-叠氮基的前核碱基偶联，（b）中的糖基化Vorbrüggen主要得到所需的α端基异构体，（C）α-分离升-核糖-和β-升-核糖-构型的双环核苷，和（d）选择合适的保护基以避免分子内迈克尔将C2'-氨基加成到C6-位上。将2'-氨基-α-L-LNA单体掺入寡脱氧核糖核苷酸中会导致互补DNA的热稳定性发生适度变化，而观察到RNA互补和出色的Watson-Crick判别可显着提高热稳定性。这些结果以及合成策略的灵活性允许在后期进行化学选择性N2'-功能化，使得2'-氨基-α-L-LNA成为基于核酸的纳米生物技术和治疗方法的有前途的构建基块。在策略上稍作修改，有助于合成迈克尔加合物的相应亚磷酰胺结构单元