24,24-Difluoro-26,27-dimethylvitamin D3 derivatives represented by formula:
wherein
X represents a hydrogen atom or a hydroxyl group.
These compounds are prepared by irradiating 24,24-difluoro-26,27-dimethylcholesta-5,7-diene-(1α,)3β,25-di- or triol with ultraviolet light, and is useful for the prevention ortreat- ment of, for example, calcium pathobolism or osteoporosis.
24,24-二
氟-26,27-二甲基
维生素 D3 衍
生物,由式表示:
其中
X 代表氢原子或羟基。
这些化合物是通过紫外线照射 24,24-二
氟-26,27-二甲基胆甾-5,7-二烯-(1α,)3β,25
-二醇或三醇制备的,可用于预防或治疗
钙致病性或骨质疏松症等疾病。