It was patented in 1971 and approved for medical use in 1978.[1]
Medical uses
Bezafibrate improves markers of combined hyperlipidemia, effectively reducing LDL and triglycerides and improving HDL levels.[2] The main effect on cardiovascular morbidity is in patients with the metabolic syndrome, the features of which are attenuated by bezafibrate.[3] Studies show that in patients with impaired glucose tolerance, bezafibrate may delay progress to diabetes,[4] and in those with insulin resistance it slowed progress in the HOMA severity marker.[5] In addition, a prospective observational study of dyslipidemic patients with diabetes or hyperglycemia showed that bezafibrate significantly reduces haemoglobin A1c (HbA1c) concentration as a function of baseline HbA1c levels, regardless of concurrent use of antidiabetic drugs.[6]
Side-effects
The main toxicity is hepatic (abnormal liver enzymes); myopathy and on rare occasions rhabdomyolysis have been reported.
The combination of a cholesterol-lowering drug, bezafibrate, and a contraceptive steroid, medroxyprogesterone acetate, could be an effective, non-toxic treatment for a range of cancers, researchers at the University of Birmingham have found.[8]
Mode of action
Like the other fibrates, bezafibrate is an agonist of PPARα; some studies suggest it may have some activity on PPARγ and PPARδ as well.
Synthesis
Further evidence that substantial bulk tolerance is available in the para position is given by the lipid lowering agent bezafibrate.
The p-chlorobenzamide of tyramine undergoes a Williamson ether synthesis with ethyl 2-bromo-2-methylpropionate to complete the synthesis. The ester group is hydrolyzed in the alkaline reaction medium.
^DE 2149070, Witte EC, Stach K, Stork H, Thiel M, Schmidt F, "Phenoxyalkylcarbonsäurederivate und Verfahren zur Herstellung derselben [Phenoxyalkylcarboxylic acid derivatives and processes for the production of the same]", published 1973-04-05, issued 23 April 1978, assigned to Boehringer Mannheim GmbH
^US 3781328, Witte EC, Stach K, Stork H, Thiel M, Schmidt F, "Phenoxy-alkyl-carboxylic acid compounds", issued 25 December 1973, assigned to Boehringer Mannheim GmbH