D3 VITAMIN D3 ANALOGS

摘要

Compounds of Formula 1 are useful for the treatment of hyperproliferative skin diseases, tumor diseases, sebaceous gland diseases, and symptoms associated with photodamaged skin:;[Formula 1];In the above formula,;R is hydrogen, fluorine or hydroxy,;R ₂ is hydrogen, lower alkyl or halogen,;X is = CH ₂ or when R is hydroxy X is (H, H) or = CH ₂ ,;A is -C≡C-, Or -CH ₂ -CH _2- .