申请人:Otsuka Pharmaceutical Co., Ltd.
公开号:US05155113A1
公开(公告)日:1992-10-13
A composition for increasing the anti-cancer activity of an anti-cancer compound selected from among 5-fluorouracil and a compound capable of producing 5-fluorouracil in vivo, the composition comprising an effective amount of a pyridine derivative represented by the formula ##STR1## wherein R.sup.1 is hydroxy or acyloxy, R.sup.2 and R.sup.4 are each hydrogen, halogen, amino, carboxyl, carbamoyl, cyano, nitro, lower alkyl, lower alkenyl or lower alkoxycarbonyl, R.sup.3 and R.sup.5 are each hydrogen, hydroxy or acyloxy; when at least one or R.sup.1, R.sup.3 and R.sup.5 is hydroxy, the structure of 1-position on the pyridine ring can be ##STR2## due to the keto-enol tautomerism, said hydrogen attached to nitrogen being optionally substituted with a substituent selected from the group consisting of lower alkyl, tetrahydrofuranyl, tetrahydropyranyl, lower alkoxy-lower alkyl, phthalidyl, carbamoyl, lower alkoxycarbonyl-lower alkylcarbamoyl, phenyl-lower alkoxy-lower alkyl, phenylcarbamoyl which may have a substituent on the phenyl ring, lower alkylcarbamoyl, carboxy-lower alkylcarbamoyl, lower alkylthio-lower alkyl and lower alkenyl, provided that the compound having the following formula is excluded, ##STR3## wherein .alpha. is hydrogen, lower alkyl, tetrahydrofuranyl, tetrahydropyranyl, lower alkoxy-lower alkyl, lower alkylcarbamoyl, lower alkylthio-lower alkyl or lower alkenyl.
一种用于增强抗癌化合物的抗癌活性的组合物,所述抗癌化合物从5-氟尿嘧啶和能够在体内产生5-氟尿嘧啶的化合物中选择,所述组合物包括有效量的由公式表示的吡啶衍生物:##STR1## 其中R.sup.1是羟基或酰氧基,R.sup.2和R.sup.4分别是氢、卤素、氨基、羧基、氨基甲酰、氰基、硝基、低碳基、低烯基或低烷氧羰基,R.sup.3和R.sup.5分别是氢、羟基或酰氧基;当R.sup.1、R.sup.3和R.sup.5中至少有一个是羟基时,吡啶环上1位的结构可以由于酮-烯醇互变异构而是##STR2## 所述氢原子连接到氮上可以选择地被下列取自所述群的取代基所取代:低碳基、四氢呋喃基、四氢吡喃基、低烷氧基-低碳基、邻苯二甲酰基、氨基甲酰-低碳基氧羰基-低烷氧基-低碳基、苯基-低烷氧基-低碳基、苯基甲酰基,所述苯环上可能有取代基,低碳基甲酰基、羧基-低碳基甲酰基、低硫基-低烷基和低烯基;但是,具有以下公式的化合物被排除:##STR3## 其中α是氢、低碳基、四氢呋喃基、四氢吡喃基、低烷氧基甲酰基、低碳基甲酰基、低硫基-低烷基或低烯基。