Prophylactic and therapeutic agent for bone diseases comprising di- or tripeptide derivative as active ingredient.

摘要

Use of a compound represented by the following general formula (I): <CHEM> wherein R<1> represents a straight or branched acyl group having 2 to 10 carbon atoms, a branched cyclic or bridged cyclic alkyloxycarbonyl group having 4 to 15 carbon atoms, a substituted or unsubstituted benzyloxycarbonyl group, a 2,2,2-trichloroethyloxycarbonyl group, a 2-(trimethylsilyl)-ethyloxycarbonyl group, a p-toluenesulfonyl group, an o-nitrophenylsulfenyl group, a diphenylphosphonothioyl group, a triphenylmethyl group, a 2-benzoyl-1-methylvinyl group or a 4-phenylbutanoyl group; R<2> represents a hydrogen atom or forms a phthaloyl group together with R<1>; R<3> represents an isobutyl group, an n-butyl group or an isopropyl group; R<4> represents an n-butyl group or an isobutyl group; X represents a direct bond, a methionine residue, a leucine residue or a norleucine residue; and H at the C-terminal means that the carboxyl group is reduced in the form of the aldehyde; as an active ingredient for the preparation of a pharmaceutical composition useful in preventing or treating malignant hypercalcemia, bone Paget's disease or osteoporosis.