申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:US04891364A1
公开(公告)日:1990-01-02
Vitamin D derivatives of the formula ##STR1## where R.sub.1, R.sub.2 and R.sub.3 which may be the same or different each represents a hydrogen atom or a hydroxyl group; X is an oxygen atom, the group of the formula OR.sub.4 (where R.sub.4 is either a hydrogen atom or a lower alkyl having 4 to 6 carbon atoms that may or may not be substituted by a hydroxyl group), or the group of the formula=N-OR.sub.5 (where R.sub.5 is either a hydrogen atom or a lower alkyl group having 1 to 5 carbon atoms that may or may not be substituted by a hydroxyl group, an amino group or a lower alkylamino group having 1 to 3 carbon atoms), provided that the carbon atom at 20-position is linked to X by a single bond when X is the group of the formula OR.sub.4, and by a double bond in other cases, and a process for preparing the derivatives are disclosed. The derivatives have both the immunoregulating action and the ability to induce differentiation in tumor cells and hence are useful as medicines such as antiallergic agents, antirheumatic agents and antitumor agents.
维生素D衍生物的化学式为##STR1##其中R.sub.1,R.sub.2和R.sub.3可能相同也可能不同,每个代表一个氢原子或一个羟基;X是一个氧原子,化学式为OR.sub.4的基团(其中R.sub.4是一个氢原子或一个含有4至6个碳原子的较低烷基,可能带有或不带有羟基取代),或者化学式为N-OR.sub.5的基团(其中R.sub.5是一个氢原子或一个含有1至5个碳原子的较低烷基,可能带有或不带有羟基、氨基或含有1至3个碳原子的较低烷基氨基取代),条件是当X为化学式为OR.sub.4的基团时,20位的碳原子通过单键与X连接,其他情况下通过双键连接,公开了制备这些衍生物的方法。这些衍生物既具有免疫调节作用,又具有诱导肿瘤细胞分化的能力,因此可用作抗过敏药物、抗风湿药物和抗肿瘤药物。