申请人:Saito Hiroshi
公开号:US20130210781A1
公开(公告)日:2013-08-15
To provide a novel vitamin D
3
derivative useful as a therapeutic agent for osteoporosis.
Provided is a vitamin D
3
derivative represented by the following formula (1) or a medicinally acceptable solvate thereof:
wherein R
1
represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, an alkylcarbonyloxyalkyl group with each alkyl having 1 to 6 carbon atoms, or an arylcarbonyloxyalkyl group with the aryl having 6 to 10 carbon atoms and the alkyl having 1 to 6 carbon atoms; R
2
represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms or, together with the other R
2
and the carbon atom to which they are bound to, may form a cyclic alkyl group having 3 to 6 carbon atoms; R
3
represents an alkyl group having 1 to 6 carbon atoms or, together with the other R
3
and the carbon atom to which they are bound to, may form a cyclic alkyl group having 3 to 6 carbon atoms; X represents an oxygen atom or a methylene group; and n represents an integer of 1 or 2.
提供一种新型维生素D3衍生物,可作为骨质疏松症的治疗药物。提供的维生素D3衍生物由以下式(1)表示,或其药学上可接受的溶剂化合物:其中R1代表氢原子,具有1至6个碳原子的烷基基团,每个烷基含有1至6个碳原子的烷基羰氧基烷基基团,或芳基羰氧基烷基基团,其中芳基含有6至10个碳原子,烷基含有1至6个碳原子;R2代表氢原子或具有1至6个碳原子的烷基基团,或者与另一个R2及它们结合的碳原子一起,可以形成具有3至6个碳原子的环烷基基团;R3代表具有1至6个碳原子的烷基基团,或者与另一个R3及它们结合的碳原子一起,可以形成具有3至6个碳原子的环烷基基团;X代表氧原子或亚甲基基团;n代表1或2的整数。