Steryl esters of Digitalis purpurea L. herb

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Abstract
The non-polar fraction sterols of Digitalis purpurea flowering plants were separated into a steryl ester and free sterol fraction. The ester fraction consisted of cycloeucalenol, obtusifoliol, 24-methylenelophenol, 24-ethylenelophenol, cholesterol, campesterol, stigmasterol, sitosterol, isofucosterol and 24-methylenecholesterol. These compounds were esterified with an αβ-unsaturated C10 fatty acid, whereas the glycerides from the same plant consisted of a complex of acids predominated by C18 and C16 types. The free sterols consisted of cycloartenol, 24-methylenecycloartenol, cholesterol, campesterol, stigmasterol, sitosterol, fucosterol and 24-methylenecholesterol. The relative proportions of each of these steroids in the two fractions were recorded.