作者:Salvatore Giandinoto、Godwin O. Mbagwu、Tamara A. Robinson、Chantel Ferguson、Jacqueline Nunez
DOI:10.1002/jhet.5570330647
日期:1996.11
The synthesis of the first examples of Class II mesoionic xanthine acyclonucleosides is described. A series of mesoionic anhydro-(8-methoxyalkyl-5-hydroxy-7-oxothiazolo[3,2-a]pyrimidinium hydroxides), Class II mesoionic analogs isoconjugate with xanthine, were prepared by the thermal condensation of methoxyalkyl-2-aminothiazoles with substituted bis(2,4,6-trichlorophenyl)malonic esters. The memoxy
描述了II类介电黄嘌呤无环核苷的第一个实例的合成。通过将甲氧基烷基-2-氨基噻唑与甲氧基烷基热缩合,制得一系列中尺度的离子型脱水-(8-甲氧基烷基-5-羟基-7-氧噻唑并[3,2- a ]嘧啶氢氧化物),Ⅱ类介电类似物同黄嘌呤。取代的双(2,4,6-三氯苯基)丙二酸酯。通过2-溴噻唑与过量的合适甲氧基烷基胺之间的芳族亲核取代反应制备了甲氧基烷基-2-氨基噻唑。在室温下,使用碘三甲基硅烷在乙腈中将所得的8-甲氧基烷基取代的中离子黄嘌呤脱甲基,得到相应的中离子脱水-(8-羟基烷基-5-羟基-7-氧噻唑并[3,2- a ]嘧啶氢氧化物)作为II类介电黄嘌呤无环核苷。