对核酸二和三酸盐的异体进行立体控制的接入
Hai-Jun Zhang1, Michał Ociepa1, Molhm Nassir1
1Department of Chemistry, Scripps Research, La Jolla, CA, USA.
Nature chemistry
|October 19, 2023
概括
科学家们开发了一种新方法来制造稳定的核酸二酸盐和三酸盐. 这一突破使得用于药物发现和生物化学研究的改性核酸类型的合成成为可能.
科学领域:
- 生物化学 生物化学
- 药用化学 医学化学
- 有机合成 有机合成
背景情况:
- 核酸二酸盐和三酸盐在生物化学中至关重要,但在体内迅速降解.
- 现有的稳定核酸单酸盐的方法 (例如酸) 不适用于二酸盐和三酸盐.
- 需要实用方法来合成纯立体化学二酸和三酸异构醇.
研究的目的:
- 开发一种基于试剂的模块化平台,用于对核酸二和三酸盐二异的立体控制和可扩展合成.
- 创建这些修饰核酸类型的图书馆,包括二核酸二酸盐和三酸盐.
- 研究P-立体化学对联体受体相互作用的影响以及潜在的候选药物的特性.
主要方法:
- 使用了一个模块化,基于试剂的合成平台.
- 该平台实现了对目标分子的立体控制和可扩展合成.
- 这种合成产生了核酸α-thiodiphosphates,α-thiotriphosphates和dinucleoside thio-compounds的纯立体异构体.
主要成果:
- 成功地实现了核酸二和三酸二异的立体控制和可扩展合成.
- 创建了一个化合物库,包括RNA帽类型的类似物.
- 证明P-立体化学显著影响联体受体相互作用,影响功效和稳定性.
结论:
- 开发的平台提供了一个切实可行的解决方案,用于访问立体纯核酸二和三酸二异.
- 这些改性核酸提供了增强的稳定性,可以调节生物活动,为药物开发提供了新的机会.
- 这些发现强调了P-立体化学在设计基于核酸的治疗方法和研究工具方面的重要性.
相关概念视频
SN2 Reaction: Stereochemistry
9.6K
In an SN2 reaction, the nucleophilic attack on the substrate and departure of the leaving group occurs simultaneously through a transition state. As the nucleophile approaches the substrate from the back-side, the configuration of the substrate carbon changes from tetrahedral to trigonal bipyramidal and then back to tetrahedral, leading to an inversion in the configuration of the product.
If the substrate is an achiral molecule at the α-carbon, the inversion of configuration is not...
If the substrate is an achiral molecule at the α-carbon, the inversion of configuration is not...
9.6K
SN1 Reaction: Stereochemistry
8.6K
This lesson provides an in-depth discussion of the stereochemical outcomes in an SN1 reaction.
In the first step of an SN1 reaction, the bond between the electrophilic carbon and the leaving group ionizes to generate the carbocation intermediate. The second step of the mechanism is the nucleophilic attack.
In the formed carbocation, the positively charged carbon is sp2 hybridized with a trigonal planar geometry. As all the three substituents lie on the same plane, a plane of symmetry for the...
In the first step of an SN1 reaction, the bond between the electrophilic carbon and the leaving group ionizes to generate the carbocation intermediate. The second step of the mechanism is the nucleophilic attack.
In the formed carbocation, the positively charged carbon is sp2 hybridized with a trigonal planar geometry. As all the three substituents lie on the same plane, a plane of symmetry for the...
8.6K
Biosynthesis of Nucleic Acids
56
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...
56
Drugs that Stabilize Microtubules
2.1K
Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
2.1K
Phosphodiester Linkages
100.1K
Overview
Phosphodiester bond forms when a phosphoric acid molecule (H3PO4) links with two hydroxyl groups (–OH) of two other molecules, forming two ester bonds. Two water molecules are released in this process. The phosphodiester bond is commonly found in nucleic acids (DNA and RNA) and plays a critical role in their structure and function.
Phosphodiester Bonds Link Nucleotides Together
DNA and RNA are polynucleotides or long chains of nucleotides that are linked together. A nucleotide is...
Phosphodiester bond forms when a phosphoric acid molecule (H3PO4) links with two hydroxyl groups (–OH) of two other molecules, forming two ester bonds. Two water molecules are released in this process. The phosphodiester bond is commonly found in nucleic acids (DNA and RNA) and plays a critical role in their structure and function.
Phosphodiester Bonds Link Nucleotides Together
DNA and RNA are polynucleotides or long chains of nucleotides that are linked together. A nucleotide is...
100.1K
Eukaryotic Transcription Inhibitors
9.8K
Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
9.8K


