(1S,4R,5S,7R,8R)-4-(4,4'-dimethoxytrityloxy)-8-hydroxy-7-(thymin-1-yl)-2,6-dioxabicyclo[3.2.1]octane | 293742-90-2

• 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: (1S,4R,5S,7R,8R)-4-(4,4'-dimethoxytrityloxy)-8-hydroxy-7-(thymin-1-yl)-2,6-dioxabicyclo[3.2.1]octane
• 英文别名: 1-[(1S,4R,5S,7R,8R)-4-[bis(4-methoxyphenyl)-phenylmethoxy]-8-hydroxy-2,6-dioxabicyclo[3.2.1]octan-7-yl]-5-methylpyrimidine-2,4-dione
• CAS: 293742-90-2
• 化学式: C₃₂H₃₂N₂O₈
• 分子量: 572.615
• InChiKey: NTGHTLTZYCFTPF-HGQOMCLLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  42
• 可旋转键数：
  8
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  116
• 氢给体数：
  2
• 氢受体数：
  8

文献信息

• Xylo-LNA analogues
  申请人：——

  公开号：US20030082807A1

  公开（公告）日：2003-05-01

  Based on the above and on the remarkable properties of the 2 ′-O, 4 ′-C-methylene bridged LNA monomers it was decided to synthesise oligonucleotides comprising one or more 2 ′-O,′-C-methylene-&bgr;-D-xylofuranosyl nucleotide monomer(s) as the first stereoisomer of LNA modified oligonucleotides. Modelling clearly indicated the xylo-LNA monomers to be locked in an N-type furanose conformation. Whereas the parent 2 ′-deoxy-&bgr;-D-xylofuranosyl nucleosides were shown to adopt mainly an N-type furanose conformation, the furanose ring of the 2 ′-deoxy-&bgr;-D-xylofuranosyl monomers present in xylo-DNA were shown by conformational analysis and computer modelling to prefer an S-type conformation thereby minimising steric repulsion between the nucleobase and the 3 ′-O-phopshate group (Seela, F.; Wömer, Rosemeyer, H. Helv. Chem. Acta 1994, 77, 883 ). As no report on the hybridisation properties and binding mode of xylo-configurated oligonucleotides in an RNA context was believed to exist, it was the aim to synthesise 2 ′-O, 4 ′-C-methylene-&bgr;-D-xylofuranosyl nucleotide monomer and to study the thermal stability of oligonucleotides comprising this monomer. The results showed that fully modified or almost fully modified Xylo-LNA is useful for high-affinity targeting of complementary nucleic acids. When taking into consideration the inverted stereochemistry at C- 3 ′ this is a surprising fact. It is likely that Xylo-LNA monomers, in a sequence context of Xylo-DNA monomers, should have an affinity-increasing effect.

  基于上述和2′-O,4′-C-亚甲基桥联的LNA单体的显著特性，决定合成包含一个或多个2′-O,4′-C-亚甲基-&bgr;-D-木糖呋喃核苷单体的寡核苷酸，作为LNA修饰寡核苷酸的第一个立体异构体。建模清楚地表明，木糖-LNA单体被锁定在N-型呋喃糖环构象中。而父代2′-脱氧-&bgr;-D-木糖呋喃核苷被显示主要采用N-型呋喃糖环构象，通过构象分析和计算建模显示，存在于木糖-DNA中的2′-脱氧-&bgr;-D-木糖呋喃单体的呋喃环更倾向于S-型构象，从而最小化核碱基和3′-O-磷酸基团之间的立体排斥（Seela, F.; Wömer, Rosemeyer, H.Helv. Chem. Acta1994, 77, 883）。由于在RNA环境中对木糖构型的寡核苷酸的杂交性能和结合模式没有相关报告，因此旨在合成2′-O,4′-C-亚甲基-&bgr;-D-木糖呋喃核苷单体，并研究包含该单体的寡核苷酸的热稳定性。结果表明，完全修饰或几乎完全修饰的木糖-LNA对于高亲和力靶向互补核酸是有用的。考虑到C-3′的反向立体化学，这是一个令人惊讶的事实。很可能木糖-LNA单体在木糖-DNA单体序列环境中会具有增强亲和力的效果。
• XYLO-LNA ANALOGUES
  申请人：Exiqon A/S

  公开号：EP1161439B1

  公开（公告）日：2010-04-21
• US7084125B2
  申请人：——

  公开号：US7084125B2

  公开（公告）日：2006-08-01