[(3R,4S,5S)-2-acetyloxy-5-[(1S)-1-acetyloxyprop-2-enyl]-4-phenylmethoxy-5-(phenylmethoxymethyl)oxolan-3-yl] acetate | 1095153-40-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: [(3R,4S,5S)-2-acetyloxy-5-[(1S)-1-acetyloxyprop-2-enyl]-4-phenylmethoxy-5-(phenylmethoxymethyl)oxolan-3-yl] acetate
• CAS: 1095153-40-4
• 化学式: C₂₈H₃₂O₉
• 分子量: 512.557
• InChiKey: UWGPPIYOBIELKQ-NTDGUBHKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  37
• 可旋转键数：
  15
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  107
• 氢给体数：
  0
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  [(3R,4S,5S)-2-acetyloxy-5-[(1S)-1-acetyloxyprop-2-enyl]-4-phenylmethoxy-5-(phenylmethoxymethyl)oxolan-3-yl] acetate 在 四氧化锇 、 N-甲基吗啉氧化物 作用下， 以 1,4-二氧六环 、 水 为溶剂， 生成
  参考文献：
  名称：

  Synthesis of Conformationally Locked Carba-LNAs through Intramolecular Free-Radical Addition to C═N. Electrostatic and Steric Implication of the Carba-LNA Substituents in the Modified Oligos for Nuclease and Thermodynamic Stabilities

  摘要：

  The syntheses of the hitherto unavailable parentfully unsubstituted carba-LNA and its C7'-amino and/or C6'-hydroxyl substituted derivatives, have been accomplished by the intramolecular 5-exo free-radical addition to a C4'-tethered C=N to give carba-LNAs with variable hydrophilic substituents at C6'/C7' (amino and/or hydroxyl). They have been introduced into isosequential antisense oligonucleotides (AONs) to examine how their relative electrostatic and steric effects in the minor groove of a putative AON-RNA duplex affect the target affinity, nuclease resistance, and RNase H elicitation. We show that 2'-oxygen in LNA is important in stabilizing the DNA/DNA and DNA/RNA duplexes vis-a-vis the unsubstituted carba-LNA and its other derivatives and that hydrophobic groups at C6'/C7' in both carba-LNA and carba-ENA relatively destabilize the AON/DNA duplex more profoundly than those in the AON/RNA duplexes. Two main factors affect the relative stabilities of AON/DNA versus AON/RNA duplexes: (i) hydration in the minor groove depending upon hydrophilicity vis-a-vis hydrophobicity of the substituents, and (ii) the relative size of the minor groove in the AON/DNA versus AON/RNA duplexes dictates the steric clash with the substituents depending upon their relative chiralities. We also show how the chirality and chemical nature of the C6'/C7' substituents affect the nuclease stability as well as the thermal stability and the RNase recruitment by AON/RNA duplexes.

  DOI：

  10.1021/jo901009w
• 作为产物：
  描述：

  3,5-di-O-benzyl-4-C-(1-hydroxy-allyl)-1,2-O-isopropylidene-α-D-ribofuranose 、 乙酸酐 在 三氟甲磺酸 作用下， 以 溶剂黄146 为溶剂， 反应 2.0h， 生成 [(3R,4S,5S)-2-acetyloxy-5-[(1S)-1-acetyloxyprop-2-enyl]-4-phenylmethoxy-5-(phenylmethoxymethyl)oxolan-3-yl] acetate
  参考文献：
  名称：

  通过结合修饰的2'，4'-碳环LNA和-ENAs对核苷酸间磷酸周围的静电进行微调导致反义特性的显着调节

  摘要：

  在反义（AS）和RNA干扰（RNAi）技术中，对天然单链2'-脱氧寡核苷酸（用于AS）或双链RNA（用于RNAi）进行化学修饰，使其与目标RNA结合，从而获得更好的通过抑制RNA翻译来下调基因表达。此处显示了通过改变取代基的静电相互作用以及围绕反义寡核苷酸（AON）-RNA异源双链体的小树林边缘附近的核苷酸间磷酸二酯部分周围的立体化学环境的精细调节，如何导致调节反义性质。通过合成各种修饰的碳环锁核酸（LNA）和在碳环部分连接有羟基和/或甲基取代基的-亚乙基桥核酸（ENA）并通过固相DNA合成将其整合到AON中来证明这一点。 。这些修饰的AON对互补RNA和DNA的靶标亲和力，核酸酶抗性和RNase H诱导表明，修饰的性质（-OH与-CH3）及其相对于邻位磷酸盐的立体化学取向在调节AON特性方面起着非常重要的作用。尽管对靶RNA的亲和力和AONs的酶稳定性受小沟中心的疏水和空间大体积修饰的不

  DOI：

  10.1021/jo8016742