This invention is directed to new 24-homo-vitamin D compounds, to methods for preparing the same and novel intermediate compounds. The compounds are characterized by vitamin D-like activity of the order of 1.alpha.,25-dihydroxyvitamin D.sub.3, the recognized circulating hormonal form of vitamin D, or various of its derivatives and by greater antineoplastic activity than such compounds but without their attendant calcemic activity. The compounds are useful in the treatment of disease states characterized by calcium-phosphorous imbalances and where antineoplastic activity is indicated.
这项发明涉及新的24-同型
维生素D化合物,以及制备这些化合物的方法和新的中间体化合物。这些化合物具有类似
维生素D的活性,与1α,25-二羟基
维生素D3相当,这是公认的
维生素D的循环荷尔蒙形式,或者其各种衍
生物,并且具有比这些化合物更强的抗肿瘤活性,但不具有它们伴随的
钙调节活性。这些化合物在治疗由
钙磷不平衡和需要抗肿瘤活性的疾病状态中是有用的。