compound, pharmaceutical composition, use of a compound, pyrazine derivative, methods for treatment or prevention, for bone promotion, and for treating bone lesions in cancers

摘要

"compound, pharmaceutical composition, use of a compound, pyrazine derivative, methods for treating or preventing, promoting bone formation, and for treating bone lesions in cancers" the invention relates to pyrazine derivatives of formula (i) or pharmaceutically acceptable salts thereof; wherein each of n, m and r has any of the meanings defined hereinbelow in the description; processes for their preparation, pharmaceutical compositions containing them and their use in the manufacture of a medicament for use in treating bone disorders or conditions.