This invention discloses 6-methylvitamin D
3
analogs, and specifically 1α,25-dihydroxy-6-methylvitamin D
3
, and pharmaceutical uses therefor. This compound exhibits vitamin D receptor binding activity and transcription activity as well as activity in arresting the proliferation of undifferentiated cells and inducing their differentiation to the monocyte thus evidencing use as an anti-cancer agent, especially for the treatment or prevention of leukemia, colon cancer, breast cancer, skin cancer or prostate cancer. This compound also exhibits low in vivo calcemic activity, but because it binds the receptor with the same affinity as the native hormone calcitriol, it may act as an antagonist to inhibit development of hypercalcemia.
本发明披露了6-甲基
维生素D3类似物,特别是1α,25-二羟基-6-甲基
维生素D3,以及其药物用途。该化合物表现出
维生素D受体结合活性和转录活性,以及阻止未分化细胞增殖并诱导其分化为单核细胞的活性,因此可作为抗癌剂,特别是用于治疗或预防白血病、结肠癌、乳腺癌、皮肤癌或前列腺癌。该化合物也表现出低体内
钙代谢活性,但由于与天然激素
钙三醇具有相同的亲和力结合受体,因此可能作为拮抗剂抑制高
钙血症的发展。