申请人:DeLuca Hector F.
公开号:US20090143342A1
公开(公告)日:2009-06-04
This invention provides a novel class of vitamin D related compounds, namely, the 2-alkylidene-19-nor-vitamin D derivatives, as well as a general method for their chemical synthesis. The compounds have the formula:
where Y
1
and Y
2
, which may be the same or different, are each selected from the group consisting of hydrogen and a hydroxy-protecting group, R
6
and R
8
, which may be the same or different, are each selected from hydrogen, alkyl, hydroxyalkyl and fluoroalkyl, or when taken together represent the group —(CH
2
)
X
— where X is an integer from 2 to 5, and where the group R represents any of the typical side chains known for vitamin D type compounds. These 2-substituted compounds are characterized by relatively high intestinal calcium transport activity and relatively high bone calcium mobilization activity resulting in novel therapeutic agents for the treatment of diseases where bone formation is desired, particularly low bone turnover 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.
本发明提供了一类新型的维生素D相关化合物,即2-烷基亚烯基-19-去氢维生素D衍生物,以及它们的化学合成的通用方法。这些化合物的化学式为:其中Y1和Y2(可以相同或不同)分别选自氢和羟基保护基组成的群,R6和R8(可以相同或不同)分别选自氢、烷基、羟基烷基和氟烷基,或者当它们在一起时代表组-(CH2)X-,其中X是从2到5的整数,而R代表维生素D类化合物已知的任何典型侧链。这些2-取代化合物的特点是具有相对较高的肠钙运输活性和相对较高的骨钙动员活性,从而产生用于治疗需要骨形成的疾病的新型治疗剂,特别是低骨转换性骨质疏松症。这些化合物还表现出明显的抑制未分化细胞增殖和诱导它们分化为单核细胞的活性,因此可以作为抗癌剂和治疗牛皮癣等疾病的药物。