6-Substituted acyclopyrimidine nucleoside derivatives and antiviral agent containing the same as active ingredient thereof
                        
                            
                                申请人:Mitsubishi Chemical Corporation
                            
                            
                                公开号:EP0829476A2
                            
                            
                                公开(公告)日:1998-03-18
                            
                            
A 6-substituted acyclopyrimidine nucleoside derivative represented by the following general formula I or I';
wherein R1 represents a hydrogen atom, halogen atom, alkyl, cycloalkyl, alkenyl, alkynyl, alkylcarbonyl, arylcarbonyl, arylcarbonylalkyl, arylthio or aralkyl group;
R2 represents an arylthio, alkylthio, cycloalkylthio, arylsulfinyl, alkylsulfinyl, cycloalkylsulfinyl, alkenyl, alkynyl, aralkyl, arylcarbonyl, arylcarbonylalkyl or aryloxy group, those groups optionally substituted by one or more of substituents selected from a halogen atom, alkyl, halogenated alkyl, alkoxy, hydroxyl, nitro, amino, cyano and acyl groups;
R3 represents a hydrogen atom, methyl, branched alkyl or -CH2-Z-(CH2)n-R5 group where R5 represents a hydrogen atom, halogen atom, hydroxyl, heterocyclic carbonyloxy, formyloxy, alkylcarbonyloxy, cycloalkylcarbonyloxy, aralkylcarbonyloxy, arylcarbonyloxy, azido, alkoxycarbonyloxy, N-alkylcarbamoyloxy, N-arylcarbamoyloxy, N-alkylthiocarbamoyloxy, N-arylthiocarbamoyloxy, alkoxy, aralkyloxy, branched alkyl, cycloalkyl or aryl group, the alkoxycarbonyloxy to aryl groups mentioned above as R5 optionally substituted by one or more substituents selected from a halogen atom, aryl, alkyl, alkoxy and halogenated alkyl groups, Z represents an oxygen, sulfur atom or methylene group, and n represents 0 or an integer of 1 to 5,
R4 represents a hydrogen atom, alkyl or aralkyl group,
X represents an oxygen or sulfur atom,
Y represents an oxygen or sulfur atom,
provided that when R4 and Z represent a hydrogen atom and oxygen atom respectively in the formula I R5 does not represent a hydroxyl group,
or a pharmaceutically acceptable salt thereof, and an antiviral agent containing the derivative or the salt thereof as an active ingredient.
                            由以下通式 I 或 I'代表的 6-取代的无环
嘧啶核苷衍
生物;
其中 R1 代表氢原子、卤素原子、烷基、环烷基、烯基、炔基、烷基羰基、芳基羰基、芳基羰基烷基、芳
硫基或芳烷基;
R2 代表芳
硫基、烷
硫基、环烷
硫基、芳基亚磺酰基、烷基亚磺酰基、环烷基亚磺酰基、烯基、炔基、芳烷基、芳基羰基、芳基羰基烷基或芳氧基,这些基团可任选被一个或多个选自卤素原子、烷基、卤代烷基、烷氧基、羟基、硝基、
氨基、
氰基和酰基的取代基取代;
R3 代表氢原子、甲基、支链烷基或-
CH2-Z-(   )n-R5 基团,其中 R5 代表氢原子、卤素原子、羟基、杂环羰基氧基、甲酰氧基、烷基羰基氧基、烷氧基、羟基、硝基、
氨基、
氰基和酰基、烷基碳酰氧基、环烷基碳酰氧基、芳基碳酰氧基、芳基碳酰氧基、
叠氮基、烷氧基碳酰氧基、N-烷基
氨基甲酰氧基、N-芳基
氨基甲酰氧基、N-烷基
硫代
氨基甲酰氧基、N-芳基
硫代
氨基甲酰氧基、烷氧基、芳基、烷氧基、支链烷基、环烷基或芳基,作为 R5 的上述烷氧基
氨基甲酰氧基至芳基任选被选自卤素原子、芳基、烷基、烷氧基和卤代烷基的一个或多个取代基取代,Z 代表氧、
硫原子或亚甲基,n 代表 0 或 1 至 5 的整数、
R4 代表氢原子、烷基或芳烷基、
X 代表氧原子或
硫原子
Y 代表氧原子或
硫原子、
但当式 I 中 R4 和 Z 分别代表氢原子和氧原子时,R5 不代表羟基、
或其药学上可接受的盐,以及含有该衍
生物或其盐作为活性成分的抗病毒剂。