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Bypassing Osmotic Shock Dilemma in a Polystyrene Resin Using the Green Solvent Cyclopentyl methyl Ether (CPME): A Morphological Perspective

机译:使用绿色溶剂环戊基甲基醚(CPME)绕过聚苯乙烯树脂中的渗透压冲击难题:一种形态学观点

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摘要

The “osmotic shock” phenomenon is the main thing that is responsible for morphological structure alteration, which can jeopardize the use of a polymer in a chemical process. This is extremely important in solid-phase peptide synthesis (SPPS), which is the method of choice for the preparation of these important biologically active compounds. Herein, we have used Hildebrand solubility parameters (δ) to investigate the influence of different ethers that are used in the precipitation step of the SPPS using a polystyrene resin. The green cyclopentyl methyl ether (CPME) has shown to be slightly superior to 2-methyltetrahydrofurane, which is also a green ether and clearly better than the hazardous diethyl ether and tert-butyl methyl ether. These results have been corroborated by scanning electron microscope (SEM) analysis and computational studies. All together, these confirm the adequacy of CPME for being the ether of choice to be used in SPPS.
机译:“渗透震荡”现象是造成形态结构改变的主要原因,这可能会危害化学过程中聚合物的使用。这在固相肽合成(SPPS)中极为重要,固相肽合成是制备这些重要的生物活性化合物的选择方法。在本文中,我们使用希尔德布兰德溶解度参数(δ)来研究在使用聚苯乙烯树脂的SPPS沉淀步骤中使用的不同醚的影响。已证明绿色环戊基甲基醚(CPME)略胜于2-甲基四氢呋喃,2-甲基四氢呋喃也是绿色醚,并且明显优于危险的二乙醚和叔丁基甲基醚。扫描电子显微镜(SEM)分析和计算研究证实了这些结果。总之,这些证实了CPME作为SPPS首选醚的充分性。

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