Stanol ester Stanol ester Stanol ester is a heterogeneous group of chemical compounds known to reduce the level of low-density lipoprotein (LDL) cholesterol in blood when ingested, though to a much lesser degree than prescription drugs such as statins. The starting material is phytosterols from plants. These are first hydrogenated to give a plant stanol which is then esterified with a mixture of fatty acids also derived from plants. Plant stanol esters are found naturally occurring in small quantities in fruits, vegetables, nuts, seeds, cereals, legumes, and vegetable oils. Stanol ester is often added to rapeseed oil based margarine or other foods
Discovery and development of statins Asp and the O5 hydroxyl group of the hydroxyglutartic acid component of the statins. Van der Waals interactions are formed between the hydrophobic side chains of the enzyme, which involve the Leu, Val, Leu, Ala and Leu and the statins. Type 2 statins form polar interaction between the fluorine atom on the fluorophenyl group and the guanidinium group of Arg. In addition to these interactions atorvastatin and rosuvastatin also form unique hydrogen bonds between Ser residue and either a carbonyl oxygen atom (atorvastatin) or a sulfone oxygen atom (rosuvastatin). A unique polar interaction between the Arg side chain and the