2-Alkylidene-19-nor-vitamin D derivatives for the treatment of osteopenia or male osteoporosis

摘要

The disclosure relates to specific 2¡alkylidene-19-nor-vitamin D derivative that are suitable for treating osteopenia, and examples of preparing such vitamin D derivatives. Particularly disclosed is the use of a therapeutically effective amount of 2-methylene-19-nor-20 (S)-1alpha,25-dihydroxy vitamin D3 in the preparation of a medicament for treating osteopenia.