相关实验视频

Updated: Jun 6, 2025

Solid-phase Synthesis of [4.4] Spirocyclic Oximes

Solid-phase Synthesis of [4.4] Spirocyclic Oximes

Published on: February 6, 2019

有效的生物仿真总合成,表征和Ommatins的抗氧化活性

Lili Huang¹, Taehwan Kim¹, Olivia J Armendarez¹

¹Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts 02115, United States.

|November 29, 2024

概括

研究人员使用仿生方法合成了格拉姆尺度的奥马丁,这些是来自昆虫和头足动物的天然颜料. 脱碳氧化桑托马丁 (Dc-Xa) 在合成的化合物中显示出最高的抗氧化活性.

科学领域:

自然产品的合成方法
生物模拟化学是生物模拟化学.
光谱学和电化学研究.

背景情况:

奥姆是一种天然色素,在节肢动物和头足动物中发现,来自酸盐.
关键的ommatins包括xanthommatin (Xa),二-xanthommatin (H2-Xa),以及它们的脱碳形式 (Dc-Xa,Dc-H2-Xa).
这些颜料在不同的氧化还原条件下呈现颜色变化.

研究的目的:

为了实现克拉姆级生物仿真总合成的桑托马丁 (Xa) /二-桑托马丁 (H2-Xa).
合成脱碳化奥姆马丁 (Dc-Xa/Dc-H2-Xa) 和受保护的未循环化桑托姆马丁 (Uc-Xa/Uc-H2-Xa).
描述合成的奥马,并评估它们的光电子和抗氧化性质.

主要方法:

一个7步线性合成序列,采用曼尼赫反应和氧化二元化.
从受保护的3-基氨酸中间体合成奥马丁.
使用NMR,UV-vis,FTIR,HRMS,LC-MS,光谱测量和电化学分析进行表征.

主要成果:

成功合成了Xa/H2-Xa,总产量为27%.
合成Dc-Xa/Dc-H2-Xa和受保护的Uc-Xa/Uc-H2-Xa. 这两种蛋白质的合成.
Dc-Xa显示出最高的抗氧化活性,其次是Xa,UC-Xa显示出最低的.

结论:

这项研究提出了一个有效的生物仿真合成ommatins.
合成的奥马具有独特的光电子和抗氧化特性.
脱碳氧化桑托马丁 (Dc-Xa) 是一种强大的抗氧化剂,突出了潜在的应用.

更多相关视频

An In Ovo Model for Testing Insulin-mimetic Compounds

An In Ovo Model for Testing Insulin-mimetic Compounds

Published on: April 23, 2018

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

相关概念视频

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.