This invention provides a novel vitamin D analog, namely, 2-methylene-19-nor-20(S)-25-methyl-1α-hydroxycalciferol. The compound has the formula:
This 2-substituted compound is characterized by relatively high intestinal calcium transport activity and relatively low bone calcium mobilization activity resulting in novel therapeutic agents for the treatment of diseases where bone formation is desired, particularly osteoporosis. These compounds also exhibit pronounced activity in arresting the proliferation of undifferentiated cells and inducing their differentiation to the monocyte thus evidencing use as anti-cancer agents and for the treatment of diseases such as psoriasis.
这项发明提供了一种新型
维生素D类似物,即2-亚甲基-19-去-20(S)-25-甲基-1α-羟基
钙化醇。该化合物的
化学式为:这种2-取代化合物具有相对较高的肠道
钙转运活性和相对较低的骨
钙动员活性,可用于治疗骨形成期望的疾病,特别是骨质疏松症。这些化合物还表现出在阻止未分化细胞的增殖和诱导它们分化为单核细胞方面的明显活性,因此表明可用作抗癌剂和治疗
银屑病等疾病。