1. The use of the compounds of formula (I) where: R represents hydrogen, halogen, cyano, trifluoromethyl, nitro, -OR, SR, SOR, -SOR, -SONRR, -NRR, -NRCOR, -NRCOR, -COR, -COR, —CONRR or a hydrocarbon group comprising a straight chain group, a branched or cyclic group each containing up to 18 carbon atoms, or a heterocyclic group containing up to 18 carbon atoms and at least one heteroatom； R is independently in each case , hydrogen, halogen, cyano, trifluoromethyl, nitro, -OR, SR, SOR, -SOR, -SONRR, -NRR, -NRCOR, -NRCOR, -COR, -COR, -CONRR or a hydrocarbon group comprising a straight chain group, a branched or cyclic group each containing up to 18 carbon atoms, or a heterocyclic group containing up to 18 carbon atoms and at least one heteroatom； R is a hydrocarbon group including a straight chain group a chain, branched or cyclic group, each of which contains up to 18 carbon atoms, and substituted by at least one residue including a -COR substituent； where R and R are not independently, in each case, a hydrogen or hydrocarbon group comprising a straight chain group, a branched or cyclic group, each of which contains up to 18 carbon atoms, or a heterocyclic group containing up to 18 carbon atoms and at least one heteroatom； and n is 0, 1, 2, 3, or 4； or a pharmaceutically acceptable solvate thereof or, more preferably, a salt or prodrug thereof for the treatment of osteoporosis and / or osteopenia. 2. The use according to claim 1, in which R or R is hydrogen, halogen, cyano, trif1. Применение соединения формулы (I)где:Rпредставляет собой водород, галоген, циано, трифторметил, нитро, -OR, SR, SOR, -SOR, -SONRR, -NRR, -NRCOR, -NRCOR, -COR, -COR, -CONRRили углеводородную группу, включающую группу с неразветвленной цепью, разветвленную или циклическую группу, каждая из которых содержит вплоть до 18 атомов углерода, или гетероциклическую группу, содержащую вплоть до 18 атомов углерода и по меньшей мере один гетероатом；Rпредставляет собой, независимо в каждом случае, водоро
