The syntheses of various fluorocarbon/fluorocarbon and fluorocarbon/hydrocarbon rac-1,2- and 1,3-di-O-alk(en)ylglycerophosphocholines and rac-1,2-di-O-alkylglycerophosphoethanolamines (see Fig.2), which may be used as components for drug-carrier and delivery systems, are described together with some results concerning their biological tolerance. They were obtained by phosphorylation of perfluoroalkylated
A new series of perfluoroalkyl-containing quaternaryammonium compounds were prepared and examined for their antibacterial activities. The perfluoroalkyl-containing quaternaryammoniumsalts mainly exhibited excellent antibacterial activity for the Gram-positive strain such as Staphylococcus aureus, the MIC (minimal inhibitory concentration) values was between 2.5 and 10 μg/mL and the MBC (minimal
the synthesis and the physicochemical and preliminary pharmaceutical assessment of a novel class of hemifluorinated dibranched derivatives: M1diHxFy. These compounds have the remarkable ability to completely stop the Ostwald ripening commonly associated with nanoemulsions. The developed synthesis is modular and allows easy incremental structural variations in the fluorophilic (fluorous chains), lipophilic
在这里,我们描述了一类新型半氟化二支化衍生物的合成、物理化学和初步药物评估:M 1 diH x F y. 这些化合物具有完全阻止通常与纳米乳液相关的奥斯特瓦尔德熟化的非凡能力。开发的合成是模块化的,允许在亲氟(氟链)、亲油(烷基间隔头)和亲水(极性头)域中轻松增加结构变化。此外,合成可以很容易地扩大规模,并且可以通过硅胶和氟硅胶柱色谱轻松获得高纯度的化合物,而无需使用 HPLC 或其他耗时的技术。胶束形成、临界聚集浓度 (CAC) 和乳液稳定性研究等表面特性证明了二支化半氟化表面活性剂 M 1 diH x F y的不同行为相对于单链半氟化类似物 M z F y。值得注意的是,新聚合物 M 1 diH 3 F 8在超过 1 年的时间里显着减缓了常用氟化麻醉剂七氟醚纳米乳液的成熟。在此期间,纳米液滴尺寸没有增加到超过 400 nm。这一结果非常有希望通过静脉内输送挥发性麻醉剂来诱导和维持全身麻
Effects of chemical variations on the mesophase behavior of new fluorinated poly(vinylcyclopropane)s
Several new structures of fluorinated polymers poly(1)–poly(9) were prepared by free radical ring opening polymerization of vinylcyclopropane monomers 1–9 containing different fluorinatedside groups of the type (CH2)n(CF2)pF. While in poly(1)–poly(3) p varied from 6 to 10 for a fixed n=2, in poly(4)–poly(6) n increased from 3 to 5 at the given p=8. In poly(7) and poly(8) a phenyl ring was incorporated
Synthesis of Per(poly)fluoroalkyl aldehydes RF(CH2)nCHO
作者:Laurence Le´veˆque、Maurice Le Blanc、Raphae¨l Pastor
DOI:10.1016/s0040-4039(98)02029-2
日期:1998.11
We report the preparation of polyfluoroalkyl aldehydes RF(CH2)nCHO in high yields by direct oxidation of polyfluoroalkyl alcohols; the Swern oxidation, pyridinium chlorochromate and Dess-Martinperiodinane are used and compared