Application of chemoenzymatic hydrolysis in the synthesis of 2-monoacylglycerols
摘要:
The selective biocatalyzed synthesis of 2-monoacylglycerols (2-MAGs) through the use of commercially available immobilized Candida antarctica (Novozym435) and Rhizomucor miehei is explored. Reactions at room temperature result in the formation of a 2-MAG and a corresponding ethyl ester of the fatty acid with immobilized C. antarctica within 2 h with yields ranging from 36% to 83%. Similar reaction conditions with immobilized R. miehei yielded exclusively the 2-MAG after 24 h with yields ranging from 37% to 88%. Yields vary on the acyl group at the sn-2 position and choice of enzyme involved. (c) 2012 Elsevier Ltd. All rights reserved.
Quantitative Method for the Profiling of the Endocannabinoid Metabolome by LC-Atmospheric Pressure Chemical Ionization-MS
作者:John Williams、JodiAnne Wood、Lakshmipathi Pandarinathan、David A. Karanian、Ben A. Bahr、Paul Vouros、Alexandros Makriyannis
DOI:10.1021/ac0624086
日期:2007.8.1
The endocannabinoid system's biological significance continues to grow as novel endocannabinoid metabolites are discovered. Accordingly, a myopic view of the system that focuses solely on one or two endocannabinoids, such as anandamide or 2-arachidonoyl glycerol, is insufficient to describe the biological responses to perturbations of the system. Rather, the endocannabinoid metabolome as a whole must be analyzed. The work described here is based on liquid chromatography coupled with atmospheric pressure chemical ionization mass spectrometry. This method has been validated to quantify, in a single chromatographic run, the levels of 15 known or suspected metabolites of the endocannabinoid system in the rat brain and is applicable to other biological matrixes. We have obtained an endocannabinoid profile specifically for the frontal cortex of the rat brain and have determined anandamide level differences following the administration of the fatty acid amide hydrolase inhibitor AM374.
antiallergic activity in vitro. Ethanolamides of omega-3 fatty acids (α-linolenic acid, EPA, and DHA) were found to possess promising antiallergic activity, whereas free fatty acids and ethanolamides of other fatty acids exhibited no or weak potency. Based on this finding, structure–activityrelationships of DHA-ethanolamide (DHEA) derivatives were investigated to yield better fatty acid derivatives with enhanced
The synthesis of docosahexaenoyl triacylglycerides at low temperature (e.g., 50 °C) using biocatalysts of 6 commercial lipases adsorbed on hydrophobic supports was studied. In general, the triacylglyceride yields were very low with the exceptions of those produced with the enzymes from Candida antarctica fraction B, CALB (82%), and those produced with the enzyme from Pseudomonas fluorescens, PFL (57%)
Application of chemoenzymatic hydrolysis in the synthesis of 2-monoacylglycerols
作者:Kyle M. Whitten、Alexandros Makriyannis、Subramanian K. Vadivel
DOI:10.1016/j.tet.2012.04.101
日期:2012.7
The selective biocatalyzed synthesis of 2-monoacylglycerols (2-MAGs) through the use of commercially available immobilized Candida antarctica (Novozym435) and Rhizomucor miehei is explored. Reactions at room temperature result in the formation of a 2-MAG and a corresponding ethyl ester of the fatty acid with immobilized C. antarctica within 2 h with yields ranging from 36% to 83%. Similar reaction conditions with immobilized R. miehei yielded exclusively the 2-MAG after 24 h with yields ranging from 37% to 88%. Yields vary on the acyl group at the sn-2 position and choice of enzyme involved. (c) 2012 Elsevier Ltd. All rights reserved.