从Clusia burle-marxii中分离出三种新的聚乙烯化二衍生物
Maria do Carmo C Silva1,2, Fernanda V Carvalho1, Antonio G Ferreira2
1Metabolomics Research Group, UFBA, Salvador, Brazil.
Chemistry & biodiversity
|July 21, 2024
概括
从C. burle-marxii.xii中分离出了三种新的聚烯酸二衍生物. 这些化合物,包括burlemarxiones G-I,表现出适度的抗质瘤活性,突出了植物.
科学领域:
- 自然产品化学 自然产品化学
- 有机化学 有机化学
- 药理学是指药理学,即药理学是指药理学.
背景情况:
- 众所周知,植物C. burle-marxii可以产生各种二次代谢产物.
- 聚乙烯基烯是具有多种生物活性的一类化合物.
- 了解C. burle-marxii成分的化学多样性和生物活性具有科学意义.
研究的目的:
- 从C. burle-marxii. 来分离和表征新的聚乙烯化二衍生物.
- 为了评估分离的化合物的抗瘤活性.
主要方法:
- 使用色谱技术分离和净化化合物.
- 使用光谱方法 (例如NMR,MS) 阐明新化合物的结构.
- 在体外抗质瘤活性测定.
主要成果:
- 从C. burle-marxii.中分离出了三种新的聚烯基化二衍生物,Burlemarxiones G-I (1-3),这些衍生物来自C. burle-marxii.
- 伯勒马克西G是伯勒马克西F的基托-醇复合物.
- 伯勒马克西翁H和I具有复杂的循环结构.
- 化合物1-3表现出适度的抗质瘤活性.
结论:
- C. burle-marxii是一种富含结构复杂的聚烯化相的丰富来源.
- 隔离的化合物,特别是G-I burlemarxiones,显示出作为抗质瘤剂的潜力.
- 对这些化合物的结构活性关系进行进一步的研究是有必要的.
相关概念视频
Hydrolysis of Chlorobenzene to Phenol: Dow Process
2.7K
Simple aryl halides do not react with nucleophiles under normal conditions. However, the reaction can proceed under drastic conditions involving high temperatures and high pressure to give the substituted products. For example, chlorobenzene is converted to phenol using aqueous sodium hydroxide at 350 °C under high pressure by the Dow process. The reaction follows an elimination-addition mechanism involving a benzyne intermediate. Here, the chloride ion is...
2.7K
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene
8.0K
Chlorination and bromination are important classes of electrophilic aromatic substitutions, where benzene reacts with chlorine or bromine in the presence of a Lewis acid catalyst to give halogenated substitution products. A Lewis acid such as aluminium chloride or ferric chloride catalyzes the chlorination, and ferric bromide catalyzes the bromination reactions. During the bromination of alkenes, bromine polarizes and becomes electrophilic. However, in the bromination of benzene, the bromine...
8.0K
Nucleophilic Aromatic Substitution: Elimination–Addition
4.0K
Simple aryl halides do not react with nucleophiles. However, nucleophilic aromatic substitutions can be forced under certain conditions, such as high temperatures or strong bases. The mechanism of substitution under such conditions involves the highly unstable and reactive benzyne intermediate. Benzyne contains equivalent carbon centers at both ends of the triple bond, each of which is equally susceptible to nucleophilic attack. This 50–50 distribution of products is...
4.0K
Nomenclature of Aromatic Compounds with a Single Substituent
8.1K
Benzene is the simplest aromatic hydrocarbon or arene. The IUPAC names for simple monosubstituted benzene derivatives are derived by adding the substituent's name as a prefix to the parent benzene. For example, halobenzene, where the halogen could be fluoro (F), chloro (Cl), bromo (Br), and iodo (I).
8.1K
Structure of Benzene: Kekulé Model
8.8K
In 1865, August Kekule suggested the structure of benzene according to the structural theory of organic chemistry based on the three assertions—formula of benzene is C6H6, all the hydrogens of benzene are equivalent, and each carbon must have four bonds due to its tetravalency.
He proposed that benzene has a cyclic structure of six carbon atoms attached to one hydrogen atom each, with three alternating pi bonds.
He proposed that benzene has a cyclic structure of six carbon atoms attached to one hydrogen atom each, with three alternating pi bonds.
8.8K
Nomenclature of Aromatic Compounds with Multiple Substituents
7.7K
When more than one substituent is present on the benzene ring, the IUPAC nomenclature depends on the number of substituents present.
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...
7.7K


