The synthesis and biological evaluation of 4-p-nitrobenzylthio-v-triazolo [4,5-d]pyridazine and imidazo[4,5-d]pyridazine ribosides as potential nucleoside transport inhibitors
作者:Jacqueline C. Bussolari、Johanna D. Stoeckler、Raymond P. Panzica
DOI:10.1016/0968-0896(96)00188-5
日期:1996.10
The synthesis of S4-substituted nucleosides possessing the imidazo- and v-triazolo[4,5-d]pyridazine ring systems was undertaken and the compounds prepared were evaluated as inhibitors of nucleoside transport into human erythrocytes. 1-(2,3,5-Tri-O-acetyl-beta-D-ribofuranosyl)-v-triazolo[4,5-d]pyridazine- 4 (5H)-thione and 1-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)imidazo[4,5-d]pyridazine-4 (5H)-thione
进行了具有咪唑基和v-三唑并[4,5-d]哒嗪环系统的S4取代核苷的合成,并将所制备的化合物作为核苷向人红细胞转运的抑制剂进行了评估。1-(2,3,5-三-O-乙酰基-β-D-呋喃呋喃糖基)-v-三唑并[4,5-d]哒嗪-4(5H)-硫酮和1-(2,3,5-三-O-乙酰基-β-D-呋喃呋喃糖基)咪唑并[4,5-d]哒嗪-4(5H)-硫酮分别通过两种不同的途径合成,并用作标题类似物的前体。硝基苄基巯基嘌呤核糖苷(NBMPR)类似物,4-(对硝基苄硫基)-1-(β-D-呋喃呋喃糖基)咪唑并[4,5-d]吡嗪和4-(对硝基苄硫基)-1-(β-D -呋喃呋喃糖基)-v-三唑并[4,5-d] py哒嗪抑制腺苷的转运,但活性分别比NBMPR和硝基苄硫基甲酰胺低4到28倍,