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New Hydroxycinnamic Acid Esters as Novel 5-Lipoxygenase Inhibitors That Affect Leukotriene Biosynthesis. 2017

Luc H Boudreau, and Grégoire Lassalle-Claux, and Marc Cormier, and Sébastien Blanchard, and Marco S Doucet, and Marc E Surette, and Mohamed Touaibia
Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB, Canada E1A 3E9.

Leukotrienes are inflammatory mediators that actively participate in the inflammatory response and host defense against pathogens. However, leukotrienes also participate in chronic inflammatory diseases. 5-lipoxygenase is a key enzyme in the biosynthesis of leukotrienes and is thus a validated therapeutic target. As of today, zileuton remains the only clinically approved 5-lipoxygenase inhibitor; however, its use has been limited due to severe side effects in some patients. Hence, the search for a better 5-lipoxygenase inhibitor continues. In this study, we investigated structural analogues of caffeic acid phenethyl ester, a naturally-occurring 5-lipoxygenase inhibitor, in an attempt to enhance the inhibitory activity against 5-lipoxygenase and determine structure-activity relationships. These compounds were investigated for their ability to attenuate the biosynthesis of leukotrienes. Compounds 13 and 19, phenpropyl and diphenylethyl esters, exhibited significantly enhanced inhibitory activity when compared to the reference molecules caffeic acid phenethyl ester and zileuton.

UI MeSH Term Description Entries
D010626 Phenylethyl Alcohol An antimicrobial, antiseptic, and disinfectant that is used also as an aromatic essence and preservative in pharmaceutics and perfumery. Benzyl Carbinol,Phenethyl Alcohol,Phenylethanol,2-Phenylethanol,beta-Phenylethanol,2 Phenylethanol,Alcohol, Phenethyl,Alcohol, Phenylethyl,Carbinol, Benzyl,beta Phenylethanol
D002109 Caffeic Acids A class of phenolic acids related to chlorogenic acid, p-coumaric acid, vanillic acid, etc., which are found in plant tissues. It is involved in plant growth regulation. Acids, Caffeic
D003373 Coumaric Acids Hydroxycinnamic acid and its derivatives. Act as activators of the indoleacetic acid oxidizing system, thereby producing a decrease in the endogenous level of bound indoleacetic acid in plants. Coumaric Acid,Hydroxycinnamic Acid,Hydroxycinnamic Acids,Acid, Coumaric,Acid, Hydroxycinnamic,Acids, Coumaric,Acids, Hydroxycinnamic
D004789 Enzyme Activation Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme. Activation, Enzyme,Activations, Enzyme,Enzyme Activations
D006918 Hydroxyurea An antineoplastic agent that inhibits DNA synthesis through the inhibition of ribonucleoside diphosphate reductase. Hydroxycarbamid,Hydrea,Oncocarbide
D001094 Arachidonate 5-Lipoxygenase An enzyme that catalyzes the oxidation of arachidonic acid to yield 5-hydroperoxyarachidonate (5-HPETE) which is rapidly converted by a peroxidase to 5-hydroxy-6,8,11,14-eicosatetraenoate (5-HETE). The 5-hydroperoxides are preferentially formed in leukocytes. 5-Lipoxygenase,Arachidonic Acid 5-Lipoxygenase,LTA4 Synthase,Leukotriene A Synthase,Leukotriene A4 Synthase,Leukotriene A4 Synthetase,5 Lipoxygenase,5-Lipoxygenase, Arachidonate,5-Lipoxygenase, Arachidonic Acid,Arachidonate 5 Lipoxygenase,Arachidonic Acid 5 Lipoxygenase,Synthase, LTA4,Synthase, Leukotriene A,Synthase, Leukotriene A4,Synthetase, Leukotriene A4
D013329 Structure-Activity Relationship The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Relationship, Structure-Activity,Relationships, Structure-Activity,Structure Activity Relationship,Structure-Activity Relationships
D015289 Leukotrienes A family of biologically active compounds derived from arachidonic acid by oxidative metabolism through the 5-lipoxygenase pathway. They participate in host defense reactions and pathophysiological conditions such as immediate hypersensitivity and inflammation. They have potent actions on many essential organs and systems, including the cardiovascular, pulmonary, and central nervous system as well as the gastrointestinal tract and the immune system. Leukotriene
D016859 Lipoxygenase Inhibitors Compounds that bind to and inhibit that enzymatic activity of LIPOXYGENASES. Included under this category are inhibitors that are specific for lipoxygenase subtypes and act to reduce the production of LEUKOTRIENES. 5-Lipoxygenase Inhibitor,Lipoxygenase Inhibitor,12-Lipoxygenase Inhibitors,15-Lipoxygenase Inhibitors,5-Lipoxygenase Inhibitors,Arachidonate 12-Lipoxygenase Inhibitors,Arachidonate 15-Lipoxygenase Inhibitors,Arachidonate 5-Lipoxygenase Inhibitors,Inhibitors, Lipoxygenase,12 Lipoxygenase Inhibitors,12-Lipoxygenase Inhibitors, Arachidonate,15 Lipoxygenase Inhibitors,15-Lipoxygenase Inhibitors, Arachidonate,5 Lipoxygenase Inhibitor,5 Lipoxygenase Inhibitors,5-Lipoxygenase Inhibitors, Arachidonate,Arachidonate 12 Lipoxygenase Inhibitors,Arachidonate 15 Lipoxygenase Inhibitors,Arachidonate 5 Lipoxygenase Inhibitors,Inhibitor, 5-Lipoxygenase,Inhibitor, Lipoxygenase,Inhibitors, 12-Lipoxygenase,Inhibitors, 15-Lipoxygenase,Inhibitors, 5-Lipoxygenase,Inhibitors, Arachidonate 12-Lipoxygenase,Inhibitors, Arachidonate 15-Lipoxygenase,Inhibitors, Arachidonate 5-Lipoxygenase

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