According to the present invention, there are provided vitamin D derivatives represented by the following general formula (1):
wherein R
1
and R
2
may be the same or different, and each represents a straight chain or branched chain alkyl group optionally substituted by a hydroxyl group, and R
3
represents a straight chain or branched chain alkyl group optionally substituted by a hydroxyl group.
根据本发明,提供了以下一般式(1)所代表的
维生素D衍
生物:其中,R1和R2可以相同也可以不同,分别代表直链或支链烷基,可选地被羟基取代,而R3则代表直链或支链烷基,可选地被羟基取代。