申请人:MERCK & CO. INC.
公开号:EP0496520A1
公开(公告)日:1992-07-29
Described are new agents for treating bone disorders associated with a reduction in bone mass and abnormalities in bone resorption or bone formation including osteoporosis, Paget's disease, bone metastases and malignant hypercalcemia. The agents are hydroxyl containing steroidal hormones, having bone resorption antagonist or bone formation stimulatory activity, covalently linked through the hydroxyl group via a bond hydrolyzable in the human body, e.g. carbamate or carbonate, which is further covalently linked to an amino, or hydroxy substituted alkylidene-1,1-bisphosphonate, through the respective amino or hydroxy group. The alkyl bisphosphonate moiety confers bone affinity. The agent acts by delivering the steroidal hormone directly to the bone target site where it is released for bone resorption antagonist or bone formation stimulatory action by hydrolysis of the hydrolyzable covalent bond.
所述新制剂用于治疗与骨量减少和骨吸收或骨形成异常有关的骨病,包括骨质疏松症、Paget 病、骨转移和恶性高钙血症。这些制剂是含羟基的类固醇激素,具有骨吸收拮抗剂或骨形成刺激活性,通过羟基与人体内可水解的键(如氨基甲酸酯或碳酸盐)共价连接,再通过各自的氨基或羟基与氨基或羟基取代的亚烷基-1,1-二膦酸盐共价连接。烷基双膦酸分子具有骨亲和性。制剂的作用是通过水解可水解共价键,将类固醇激素直接输送到骨靶部位,并在那里释放出来,起到拮抗骨吸收或刺激骨形成的作用。