申请人:Somanta Limited
公开号:US07557215B2
公开(公告)日:2009-07-07
Anthraquinone compounds of the general formula (I) or a salt thereof (Formula I) in which R1 to R4 are each selected from the group consisting of H, C1-4 alkyl, X1, —NHR0N (R5)2 in which R0 is a C1-12 alkanediyl and each R5 is H or optionally substituted C1-4 alkyl, and a group of formula (II) in which at least one of R6, R7 and R8 is selected from X2, and X2 substituted C1-4 alkyl and any others are H or C1-4 alkyl; R9 is selected from H, C1-4 alkyl, X2 and X2 substituted C1-4 alkyl; m is 0 or 1; n is 1 or 2; X1 is a halogen atom, a hydroxyl group, a C1-6 alkoxyl group, an aryloxy group or an acyloxy group; and X2 is a halogen atom, a hydroxyl group, a C1-6 alkoxyl group, an aryloxy group or an acyloxy group; provided that at least one of R1 to R4 is a group of formula (II). The N-oxides are useful prodrugs which are selectively bioreduced in hypoxic tumours to the corresponding cyclic amine derivatives. The amine compounds are cytotoxic and may be used as alkylating agents having topoisomerase II inhibiting activities in cancer therapy.
通式(I)或其盐(式I)的蒽醌类化合物,其中R1至R4分别选自H、C1-4烷基、X1、-NHR0N(R5)2,其中R0为C1-12烷二基,每个R5为H或可选取代的C1-4烷基,以及公式(II)的基团,其中至少有一个R6、R7和R8选自X2和X2取代的C1-4烷基,其余为H或C1-4烷基;R9选自H、C1-4烷基、X2和X2取代的C1-4烷基;m为0或1;n为1或2;X1为卤素原子、羟基、C1-6烷氧基、芳氧基或酰氧基;X2为卤素原子、羟基、C1-6烷氧基、芳氧基或酰氧基;但要求R1至R4中至少有一个是公式(II)的基团。N-氧化物是有用的前药,可在低氧肿瘤中选择性地生物还原为相应的环状胺衍生物。胺类化合物具有细胞毒性,并可用作具有拓扑异构酶II抑制活性的烷基化剂在癌症治疗中使用。