| abstract |
(57) [Summary] [Structure] General formula (I) (Wherein R 1 represents an alkyl group which may be substituted with a hydroxyl group and has 1 to 10 carbon atoms, R 2 represents a hydrogen atom or a hydroxyl group, and R 3 represents a hydrogen atom or a hydroxyl group) . [Effects] The vitamin D derivative, which is the compound of the present invention in which the 22-position is substituted with a sulfur atom, has a strong keratinocyte growth inhibitory action. |