摘要:
Biologically active 1α-hydroxy-22-iodinated vitamin D₃ compounds and a process for the preparation of 1α-hydroxy-22-iodinated vitamin D₃ compounds are disclosed. The 22-iodo-vitamin D₃ compounds show relatively high binding affinity for the vitamin D receptor demonstrating their potential for high in vivo biological activity. Further, these compounds induce relatively high differentiation of malignant cells. Also, these 22-iodo compounds show high in vivo calcium transport activity with little or no bone calcium mobilization activity. These compounds thus show promise in the treatment of osteoporosis.
摘要:
This invention provides a novel class of vitamin D-related compounds, namely the 1α-hydroxy-19-nor-vitamin D analogs, as well as a general method for their chemical synthesis. The compounds exhibit pronounced activity in arresting the proliferation of undifferentiated cells, including malignant cells, and in inducing their differentiation, and thus represent novel therapeutic agents for the treatment of malignant and other diseases characterized by the proliferative grointh of undifferentiated cells. Formulations for therapeutic use and treatment methods are also provided.
摘要:
Biologically active 19-nor vitamin D analogs substituted at C-2 in the A-ring with an ethylidene group. These compounds have preferential activity on mobilising calcium from bone and either high or normal intestinal calcium transport activity which allows their in vivo administration for the treatment of metabolic bone diseases where bone loss is a major concern. These compounds are also characterised by high cell differentiation activity.
摘要:
Biologically active 19-nor vitamin D analogs substituted at C-2 in the A-ring with an ethylidene group. These compounds have preferential activity on mobilising calcium from bone and either high or normal intestinal calcium transport activity which allows their in vivo administration for the treatment of metabolic bone diseases where bone loss is a major concern. These compounds are also characterised by high cell differentiation activity.