Guanosine analogs. Synthesis of nucleosides of certain 3-substituted 6-aminopyrazolo[3,4-d]pyrimidin-4(5H)-ones as potential immunotherapeutic agents
作者:Roger J. Bontems、Jack D. Anderson、Donald F. Smee、Ai Jin、Hassan A. Alaghamandan、Brahma S. Sharma、Weldon B. Jolley、Roland K. Robins、Howard B. Cottam
DOI:10.1021/jm00170a020
日期:1990.8
the pyrazolo[3,4-d]pyrimidine ring system with various substituents at the 3-position. The new analogues prepared here include the CH3 (2-amino-3-methyl-1-beta-D-ribofuranosylpyrazolo[3,4-d]pyrimidin-4 (5H)-one, 13a), the phenyl (2-amino-3-phenyl-1-beta-D-ribofuranosylpyrazolo[3,4-d]pyrimidin-4 (5H)-one, 13b), and the NH2 (3,6-diamino-1-beta-D-ribofuranosylpyrazolo[3,4-d]pyrimidin-4(5H)- one, 17) substituted
在吡唑并[3,4-d]嘧啶环系统中合成了几个鸟苷类似物,在3-位具有各种取代基。此处制备的新类似物包括CH3(2-氨基-3-甲基-1-β-D-呋喃呋喃糖基吡唑并[3,4-d]嘧啶4(5H)-one,13a),苯基(2-氨基- 3-苯基-1-β-D-呋喃核糖基吡唑并[3,4-d]嘧啶-4(5H)-one,13b)和NH2(3,6-二氨基-1-β-D-呋喃核糖基吡唑并[3, 4-d]嘧啶-4(5H)-1,17)取代的衍生物。相对于已知的活性剂5-氨基-3-β-,评估了这些新试剂以及包括H,Br,OCH3,COOH和氧代在内的其他几种3-取代的衍生物增强鼠类某些免疫功能的能力。 D-呋喃呋喃糖基噻唑并[4,5-d]嘧啶-2,7(3H,6H)-二酮(4,7-thia-8-氧代鸟苷)。生物学评估包括(1)对自然杀伤细胞功能增强的离体测定,以及(2)对Semliki森林病毒致死性攻击的体内抗病毒保护。