Vitamin D compounds method for preparing these compounds.

The invention relates to a new vitamin D compound of the general formula (I) wherein R2 is a C1-C3, a group of hydroxy C1-C3, a group of alkoxymethyl C1-C2 OR GROUP C2-C3 alkynyl OR; R3 is a hydrocarbon of 3 to 5 saturated or unsaturated, branched or unbranched MEMBERS OR BI-RADICAL OXAHIDROCARBONO, having at least three atoms in the main chain and optionally substituted with one or more substituents selected from epoxide, FLUOR hydroxide; IPRES A GROUP OF ISOPROPYL; B they are each individually hydrogen atoms or methyl groups, or a and b together form one methylene group. The invention also relates to a method for preparing these compounds and their use in pharmacotherapy and cosmetics.