在不同温度(2、4和6摄氏度)和尿素/脂肪酸比(2:1、3:1和4:1)下,使用甲醇通过尿素分馏浓缩源自化学水解沙丁鱼油的二十碳五烯酸(EPA) w / w),并通过中和氧化铝柱色谱法纯化。通过气-液相色谱法和作为FAME和N-酰基吡咯烷化物的气相色谱-质谱法确定了各个脂肪酸的脂肪酸甲酯(FAME)。在FAME的质量裂解模式中,基峰被指定为通过McLafferty重排获得的1-甲氧基乙烯醇部分(m / z = 74)。在FAME-PUFA中,在具有四个或更多双键的脂肪酸中形成了环状对yl离子(m / z = 91)。N-酰基吡咯烷化物的基峰是McLafferty重排离子,1-(吡咯烷-1-基)乙烯醇(m / z = 113)。在4摄氏度的结晶温度下,尿素/脂肪酸比例为4:1(w / w)时,EPA的最高浓度为47.78%,收率为93.74%。通过尿素络合将饱和脂肪酸和较少不饱和脂肪酸络合后
This study aimed to investigate the effect of fatty acid-ethanol amine (FA-EA) derivatives (L1–L10) on the mitigation of intracellular lipid accumulation and downregulation of pro-inflammatory cytokines in vitro. First, the series of FA-EA derivatives were synthesized and characterized. Then, their cytotoxic, intracellular lipid accumulation and inhibition of pro-inflammatory cytokines were evaluated
Enzymatic synthesis of N-acylethanolamines: direct method for the aminolysis of esters
作者:Kyle M. Whitten、Alexandros Makriyannis、Subramanian K. Vadivel
DOI:10.1016/j.tetlet.2012.08.042
日期:2012.10
Immobilized Candida antarctic (Novozyme 435) catalyzed synthesis of N-acylethanolamines is described. Treatment of methyl esters with lipase and amines yielded the desired amides within 2-24 h with yields ranging from 41% to 98%. (C) 2012 Elsevier Ltd. All rights reserved.
MEANS AND METHODS FOR ANALYZING A SAMPLE BY MEANS OF CHROMATOGRAPHY-MASS SPECTROMETRY
申请人:Metanomics GmbH
公开号:EP1910959A1
公开(公告)日:2008-04-16
Means and Methods for Analyzing a Sample by Means of Chromatography-Mass Spectrometry
申请人:Walk Tilmann B.
公开号:US20080234945A1
公开(公告)日:2008-09-25
The present invention relates to a method for analyzing at least one test sample, wherein said test sample comprises at least one compound, said method comprising the steps of: a) providing at least one test sample comprising at least one compound; b) determining said at least one compound in said test sample whereby raw results are generated; and c) analyzing the raw results obtained in step b), wherein the analysis of said at least one test sample is accompanied by an analysis of at least one reference sample; and wherein the test sample and the reference sample are analyzed in an identical sequence in each step of the method. Moreover, the present invention further encompasses a system for carrying out said method comprising operatively linked to each other: (a) means for determining a compound; (b) means for monitoring process parameters, (c) means for analyzing raw results obtained from the means according to (a), wherein said means for analyzing raw results comprise: (i) a first database comprising raw results received from the means according to (a); (ii) a second database comprising monitored process parameters received from the means according to (b); (iii) a third database comprising rules for evaluating the raw results; and (iv) a fourth database comprising allocated results of identified compounds; wherein at least the second, third and fourth database are operatively linked to the first database.
METHOD FOR THE SYNTHESIS OF DHA
申请人:Khan Mohamed Amin
公开号:US20140012024A1
公开(公告)日:2014-01-09
A method for preparing docosahexaenoic acid (DHA). The method comprises coupling a compound represented by Formula I with a compound represented by Formula II followed by partial hydrogenation to obtain a compound represented by Formula III. The compound represented by Formula III acts as a DHA precursor and thus can be hydrolysed to obtain DHA. Novel starting materials represented by Formula I and Formula II, and synthetic routes for preparing the same are also provided.