申请人:KYOWA HAKKO KOGYO CO., LTD.
公开号:EP0383919A1
公开(公告)日:1990-08-29
Novel staurosporin derivatives represented by formula (I) (wherein R1 represents hydrogen, lower alkyl, formyl or amino, R2 represents hydrogen, formyl, lower alkanoyl or a group formed by removing a hydroxy moiety from the carboxyl group of an a-amino acid whose amino group may optionally be protected, one of X1 and X2 represents hydrogen and the other represents hydrogen, hydroxy, lower alkoxy or lower alkylthio, or X' and X2 are taken together to form oxygen, provided that, when R1 and R2 are both hydrogen atoms and one of X1 and X2 is hydrogen, the other represents a group other than hydrogen or hydroxy) and their pharmacologically acceptable salts are disclosed. These compounds inhibit protein kinase C and have a cell growth inhibiting activity.
本发明涉及一种以式(I)表示的新型链霉亲菌素衍生物(其中R1代表氢、低碳基、甲酰基或氨基,R2代表氢、甲酰基、低碳酰基或者是由去除α-氨基酸羧基的羟基部分而形成的基团,该α-氨基酸羧基的氨基部分可以选择性地被保护,X1和X2中的一个代表氢,另一个代表氢、羟基、低碳基氧或低碳基硫,或者X'和X2结合形成氧,但当R1和R2均为氢原子且X1和X2中的一个为氢时,另一个代表的是除氢或羟基以外的基团),以及其药学上可接受的盐。这些化合物能够抑制蛋白激酶C并具有细胞生长抑制活性。