合成4'-C-α-Aminoethoxy-2'-O-Methyl-5-Methyl-和5-Propynyl-Uridine胺酸,用于结构优化的反意义寡核酸
Elsayed M Mahmoud1,2, Yoshihito Ueno1,3,4,5
1Course of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan.
Current protocols
|December 26, 2025
概括
这项研究详细介绍了改进的新型4'-C-α-aminoethoxy (4'AEo) 修饰尿素构建块的合成方法. 这些进步有助于创建下一代具有增强治疗功能的反感性寡核酸 (ASO).
科学领域:
- 药用化学 医学化学
- 有机合成 有机合成
- 核酸化学的核酸化学
背景情况:
- 化学修饰增强了寡核酸 (ON) 的治疗性能,改善了杂交亲和力,核酶抵抗力和代谢稳定性.
- 4"碳 (4"C) 替代物增强了糖酸骨干,同时保持了天然核酸构成.
- 4ahydro-C-α-aminoethoxy (4ahydroAEo) 框架提供了对核酶的固体保护,并保留了RNase H活性,使其成为反感性寡核酸 (ASO) 的理想选择.
研究的目的:
- 为两种新型4ahydro-C-modified尿素胺酸基构建块提供优化和可重复的合成协议:4ahydroAEomU和4ahydroAEopU.
- 为了确保这些构建块与自动固相寡核酸合成完全兼容.
- 为先进的ON疗法提供可靠和可扩展的平台,用于生成结构定义的4种ahydro-C-modified尿素衍生物.
主要方法:
- 合成4ahydroAEomU涉及化,还原性脱化,丝保护,环氧化和核性环氧化物开放.
- 4ahydroAEopU的合成包括区域选择性降解保护,化,索诺加希拉-哈吉哈拉合,DMTr保护和化.
- 这两种合成途径都强调了高立体化学控制,可重现性和效率,中间产物通过TLC,NMR和质谱验证.
主要成果:
- 优化的协议产生了分析纯的4ahydroAEomU和4ahydroAEopU高立体化学控制的色胺.
- 开发的方法最大限度地降低了反应复杂性,并与以前的方法相比提高了产量.
- 合成的胺酸与标准的自动化固相寡核酸合成相容.
结论:
- 描述的合成路径提供了一个可靠和可扩展的平台,用于生产新的4个ahydro-C-modified尿素衍生物.
- 这些胺酸对于构建具有增强双重稳定性和核酶抵抗性的ASO至关重要.
- 这些进步有助于合理设计下一代ON疗法,提高安全性和有效性.
相关概念视频
Biosynthesis of Nucleic Acids
912
Nucleic acid biosynthesis is a fundamental biochemical process that produces the purine and pyrimidine nucleotides essential for DNA and RNA synthesis. This pathway maintains a balanced nucleotide pool, preventing imbalances that could jeopardize genetic integrity and cellular function. Given the crucial role of nucleotides, their synthesis is tightly regulated to ensure proper cellular homeostasis.Purine BiosynthesisThe biosynthesis of purine nucleotides begins with ribose-5-phosphate, a...
912
RNA Structure
6.9K
The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
6.9K
RNA Structure
78.6K
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
78.6K
Nucleic Acid Structure
8.3K
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA...
DNA Structure
DNA...
8.3K
Preparation of 1° Amines: Gabriel Synthesis
4.4K
Direct alkylation is not a suitable method for synthesizing amines because it produces polyalkylated products. Gabriel synthesis is the most preferred method to exclusively make primary amines. The method uses phthalimide, which contains a protected form of nitrogen that participates in alkylation only once to predominantly give primary amines.
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
4.4K
Adrenergic Agonists: Chemistry and Structure-Activity Relationship
3.8K
Adrenergic agonists' structure-activity relationship (SAR) determines their selectivity and efficacy. These agonists comprise a phenylethylamine moiety with an aromatic ring and an ethylamine side chain.
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of...
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of...
3.8K


