了解迪科德莫利德的乳部分如何影响活动
Simon J Shaw1, Kurt F Sundermann, Mark A Burlingame
1Kosan Biosciences, Inc., 3832 Bay Center Place, Hayward, CA 94545, USA. shaw@kosan.com
Journal of the American Chemical Society
|May 5, 2005
概括
为了研究乳环的功能,合成了简化的迪科德莫利德类型. 与天然产品相比,一种未被替代的布蒂罗拉克类比物显示出增强的生物活性.
科学领域:
- 药用化学 医学化学
- 有机合成 有机合成
- 药理学 药理学是指药理学的学科.
背景情况:
- 迪科德莫利德是一种具有强大的细胞毒性活性的海洋天然产品.
- 乳环是迪科德莫利德的关键结构特征,但其在活性中的确切作用尚未完全理解.
- 结构-活性关系研究对于开发新型治疗剂至关重要.
研究的目的:
- 为了设计和合成简化类比的discodermolide.
- 调查乳环在迪科德莫利德生物活性中的重要性.
- 为了识别具有更强效的简化类型.
主要方法:
- 迪科德莫利德类似物的化学合成.
- 使用光谱方法 (NMR,MS) 进行结构性表征.
- 在体外生物测试以评估细胞毒性活性.
主要成果:
- 一系列简化的迪科德莫利德类似物已成功合成.
- 产生了一种未被替代的布罗拉克类似物 (化合物9).
- 与天然迪科德莫利德相比,化合物9表现出更好的细胞毒性活性.
结论:
- 乳环在迪科德莫利德的活性中起着重要作用.
- 简化的类似物可以保持或增强生物效能.
- 不被替代的布提洛拉克9代表了对进一步药物开发的有希望的化合物.
相关概念视频
Local Anesthetics: Chemistry and Structure-Activity Relationship
Local anesthetics (LAs) are drugs that induce a temporary loss of sensation in a limited body area, preventing pain. Cocaine was the first local anesthetic discovered in the late 19th century. Cocaine is a benzoic acid ester obtained from the leaves of coca shrubs and was often used for its psychotropic effects. Cocaine was first isolated in 1860 by Albert Niemann. Sigmund Freud studied the physiological actions of cocaine. Carl Koller later introduced it into clinical practice in 1884 as a...
Local Anesthetics: Mechanism of Action
Local anesthetics (LAs) block sensory and motor impulses by inhibiting the sodium channels on the nerve cell membranes. This induces temporary loss of sensation, relieving pain in a specific body area.
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
Local anesthetics are amphiphilic molecules consisting of a hydrophobic aromatic part linked to a hydrophilic group by an ester or amide linkage. They are weak bases and are usually available as salts, which increases their solubility and stability. Once administered, LAs exist in the body either...
Factors Affecting Activity Coefficient
The extended Debye-Hückel equation indicates that the activity coefficient of an ion in an aqueous solution at 25°C depends on three partially interdependent properties: the ionic strength of the solution, the charge of the ion, and the ion size.
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a decrease in the...
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a decrease in the...


