Nucleosides and Nucleotides. 186. Synthesis and Biological Activities of Pyrimidine Carbocyclic Nucleosides with a Hydroxyamino Group Instead of a Hydroxymethyl Group at the 4'-Position of the Sugar Moiety.
作者:Akira OGAWA、Satoshi SHUTO、Motohiro TANAKA、Takuma SASAKI、Shuji MORI、Shiro SHIGETA、Akira MATSUDA
DOI:10.1248/cpb.47.1000
日期:——
smoothly gave the hydroxyamino-substituted carbocyclic nucleosides 16 and 17. From these nucleosides, the target compounds were prepared after deprotection or further reactions. The 2',3'-didehydro-2',3'-dideoxythymidine (D4T) analogue 20 was the most effective compound, with IC50 values of 27.3 and 34.5 microM against KB and L1210 cells in vitro. Carbocyclic analogues of uridine and cytidine (29 and
在糖部分的4'-位具有羟氨基而不是羟甲基的嘧啶碳环核苷被设计为潜在的抗肿瘤和/或抗病毒剂。钯(O)催化的对映体纯净(+)-(1R,4S)-4-[(叔丁基二苯基甲硅烷基)氧基] -1-(乙氧羰基xy)-2-环戊烯(9)与N3-苯甲酰胸腺嘧啶和-尿嘧啶产生碳环核苷10和11。随后Pd(O)催化N3-苯甲酰基-1-[(1R,4S)-4-(乙氧羰氧基)-2-环戊烯-1-基]胸腺嘧啶的反应(14)和-尿嘧啶(15)与O-苄基羟胺一起平滑地给出了羟基氨基取代的碳环核苷16和17。从这些核苷中,脱保护或进一步反应后制备了目标化合物。2',3'-二氢-2',3' -二脱氧胸苷(D4T)类似物20是最有效的化合物,在体外对KB和L1210细胞的IC50值为27.3和34.5 microM。尿苷和胞苷的碳环类似物(29和32)对两种细胞系的效力均不及20。