The present invention relates to radicicol derivatives represented by the following formula (I) or pharmacologically acceptable salts thereof:
wherein R1 and R2 are the same or different and each represents hydrogen, alkanoyl, alkenoyl or tert-butyldimethylsilyl; (1) when X represents halogen, Y represents an oxygen atom or R4-O-N (wherein R4 represents hydrogen or substituted or unsubstituted lower alkyl); and R3 represents hydrogen, alkanoyl, alkenoyl or the like; and (2) when X and R3 are combined with each other to represent a single bond; Y represents R4B-O-N (wherein R4B has the same meaning as R4). The radicicol derivatives of the present invention demonstrate tyrosine kinase inhibition activity and pharmacological activities such as antitumor, antimicrobial or immunosuppression effects.
本发明涉及下式(I)所代表的萝卜二醇衍
生物或其药理上可接受的盐:
其中R1和R2相同或不同,各自代表氢、烷酰基、烯酰基或叔丁基二甲基
硅烷基;(1)当X代表卤素时,Y代表氧原子或R4-O-N(其中R4代表氢或取代或未取代的低级烷基);R3代表氢、烷酰基、烯酰基或类似物;(2)当X和R3相互结合代表单键时;Y代表R4B-O-N(其中R4B与R4含义相同)。本发明的萝卜醇衍
生物具有
酪氨酸激酶抑制活性和药理活性,如抗肿瘤、抗菌或免疫抑制作用。