氯硝柳胺乙醇胺盐的合成

在适当溶剂中将所硝柳胺与乙醇胺反应，制得氯硝柳胺及乙醇胺盐，经元素分析，ＩＲ和ＮＭＲ鉴定了结构。对该化全物的熔点测定进行了讨论。     

花生四烯酸单乙醇酰胺的酶法制备

研究了以花生四烯酸作为酰基供体酶法制备花生四烯酸单乙醇酰胺的方法,其中底物花生四烯酸采用尿素包合法和溶剂低温萃取法二次富集获得。通过单因素试验得到酶法制备花生四烯酸单乙醇酰胺的较佳反应条件为:1 mmol混合脂肪酸(花生四烯酸含量84.68%)与1 mmol单乙醇胺于1.5 m L正己烷体系中混合,在6%(相对于反应物总质量)的Lipozyme 435催化作用下,于50℃、400 r/min条件下反应6 h,可以得到纯度为82.69%的花生四烯酸单乙醇酰胺。     

硬脂酸单乙醇酰胺聚氧乙烯醚的合成及性能研究

以硬脂酸为基本原料,与单乙醇胺反应后得到硬脂酸单乙醇酰胺,再与环氧乙烷(EO)在碱性催化剂作用下进行乙氧基化反应,合成具有不同聚合度的聚氧乙烯醚非离子表面活性剂。通过红外光谱图和NMR表征,确定了产品的结构和平均聚合度,并测试了产品的表面张力、cmc值、γcmc、HLB值和浊点等表面活性。     

聚氧乙烯脂肪酸乙醇酰胺磺基琥珀酸单酯二钠的表面活性

研究了聚氧乙烯脂肪酸乙醇酰胺磺基琥珀酸单酯二钠的表面活性。结果表明,随氧乙烯聚合数或脂肪酸碳原子数的增加,临界胶束浓度减小而最小表面张力增大,润湿力和起泡力都下降。泡沫稳定性都较高且随氧乙烯聚合数的增加变化不显著,随脂肪酸碳原子数的增加趋于增强。     

Effect of dietary fat on endocannabinoids and related mediators: Consequences on energy homeostasis,inflammation and mood

Among the several known fatty acid‐derived chemical signals, the endogenous ligands of cannabinoid receptors type‐1 and ‐2, two G‐protein‐coupled receptors involved in several aspects of mammalian physiology and pathology, are perhaps those the levels of which have proven to be most sensitive to the fatty acid composition of the diet. The two most studied such ligands, known as endocannabinoids, are N‐arachidonoyl‐ethanolamine and 2‐archidonoylglycerol, and are found in tissues together with other N‐acyl‐ethanolamines and 2‐acylglycerols, not all of which activate the cannabinoid receptors, although several of them do exhibit important pharmacological effects. In this review article, we describe literature data indicating that the tissue concentrations of the endocannabinoids and related signalling molecules, and hence the activity of the respective receptors, can be modulated by modifying the fatty acid composition of the diet, and particularly its content in long chain PUFAs or in long chain PUFA precursors. We also discuss the potential impact of these diet‐induced changes of endocannabinoid tone on three of the major pathological conditions in which cannabinoid receptors have been involved, that is metabolic dysfunctions, inflammation and affective disorders.     

硬脂酸单乙醇酰胺聚氧乙烯醚葡萄糖苷的合成及性能

以硬脂酸、单乙醇胺、环氧乙烷、葡萄糖为原料制备了不同环氧乙烷(EO)聚合度的硬脂酸单乙醇酰胺聚氧乙烯醚葡萄糖苷类非离子表面活性剂。该糖苷类表面活性剂在烷基和葡萄糖分子之间引入非离子表面活性剂中常见的亲水基团。通过IR和1HNMR对产物结构进行表征,并测试了该类表面活性剂的最低表面张力(γCMC)为30～38 mN/m,临界胶束质量浓度(CMC)为0.01～0.1 g/L。研究了EO聚合度(n)对产品表面物理化学性能的影响,随着n的增加,CMC、乳化性能、吸湿保湿性能均增加。不同聚合度的产物均有很好的泡沫性能和硬水稳定性。     

Enrichment of Arachidonic Acid for the Enzymatic Synthesis of Arachidonoyl Ethanolamide

Arachidonoyl ethanolamide is an endogenous cannabinoid neurotransmitter that potentially has therapeutic properties. In this study, we report an enzymatic method to synthesize this bioactive ethanolamide. First, free fatty acids were obtained from arachidonic acid-rich oil and then arachidonic acid was enriched by urea inclusion and AgNO₃ solution fractionation. Arachidonic acid content was increased from 40.2 to 78.4 % with 27.6 ± 1.8 % total fatty acid mass yield (w/w, relative to total free fatty acid) after urea inclusion. Purification of arachidonic acid by AgNO₃ solution fractionation was optimized, and under the optimal conditions, a product with 90.7 % arachidonic acid was obtained with 80.4 % mass yield (w/w, relative to total free fatty acid). Finally, arachidonoyl ethanolamide was synthesized by reacting the purified arachidonic acid with ethanolamine in hexane using Novozym 435 lipase of Novozymes America (Blair, NE), which resulted in the formation of 88.4 ± 0.6 % arachidonoyl ethanolamide with 72.7 ± 2.2 % mass yield. The main novelties of this study are the enrichment of polyunsaturated fatty acids by AgNO₃ solution fractionation which has received little attention in recent years, and this is the first time the synthesis of arachidonoyl ethanolamide is reported.     

硬脂酸乙醇酰胺聚氧乙烯醚的合成及性能

以聚乙二醇(600)为原料,通过三步合成了硬脂酸乙醇酰胺聚氧乙烯醚。首先合成硬脂酸乙醇酰胺。然后,在碱性条件下,酰胺与环氧氯丙烷反应生成环醚。最后环醚与聚乙二醇(600)反应生成聚氧乙烯醚。正交试验确定较佳工艺条件为：环醚：聚乙二醇(mol)为1：1．2,反应时间5h,反应温度130℃产品收率达90％。通过红外光谱图确定了产品的结构并对产品的表面物性进行了分析。结果表明产品具有较好的降低水表面张力的能力．并具有良好的增稠、润湿,性能。     

聚氧丙烯脂肪酸乙醇酰胺磺基琥珀酸单酯二钠的表面活性

合成了一系列聚氧丙烯脂肪酸乙醇酰胺磺基琥珀酸单酯二钠并研究了其表面活性。结果表明 ,随氧丙烯聚合数或脂肪酸碳原子数的增加 ,临界胶束浓度减小而最小表面张力增大 ,润湿力和起泡力都下降 ,泡沫稳定性较高且变化不显著     

烷氧基化十四酸乙醇酰胺磺基琥珀酸单酯钠盐的表面活性研究

研究了乙氧基化和丙氧基化十四酸乙醇酰胺磺基琥珀单酯钠盐的表面活性，结果表明，随烷氧基加聚数的增加，临界胶束浓度减小而最小表面张力增大，乙氧基化物的润湿力迅速下降，而丙氧基化物的润湿力趋于增强，二者的起泡力都下降，而泡沫稳定性都较高，变化不显著，前得的润车不及后者，二者起泡力及泡沫稳定性的差别不显著。