Pyrido[2,1-<i>f</i>]purine-2,4-dione Derivatives as a Novel Class of Highly Potent Human A<sub>3</sub> Adenosine Receptor Antagonists
作者:Eva-María Priego、Jacobien von Frijtag Drabbe Kuenzel、Ad P. IJzerman、María-José Camarasa、María-Jesús Pérez-Pérez
DOI:10.1021/jm0208469
日期:2002.8.1
one-pot reaction that consists of the treatment of 6-aminouracil derivatives with N-bromosuccinimide to generate a 5,5-dibromo-6-imino intermediate that reacts "in situ" with pyridine, 4-methoxypyridine, 4-tert-butylpyridine, or 4-phenylpyridine to afford the corresponding 1H,3H-pyrido[2,1-f]purine-2,4-diones (2-5). Functionalization at the N(3) position in compounds 2-5 was performed by reaction with
1H,3H-吡啶并[2,1-f]嘌呤-2,4-二酮可被描述为融合的黄嘌呤结构,已通过新型合成方法合成,并且它们与人腺苷A(1)具有亲和力, A(2A)和A(3)受体已在放射性配体结合研究中进行了评估。所用的合成方法是在我们的实验室中开发的,涉及两步一锅法反应,该反应包括用N-溴琥珀酰亚胺处理6-氨基尿嘧啶衍生物,生成5,5-二溴-6-亚氨基中间体,该中间体在“用吡啶,4-甲氧基吡啶,4-叔丁基吡啶或4-苯基吡啶原位”得到相应的1H,3H-吡啶[2,1-f]嘌呤-2,4-二酮(2-5)。通过与DBU和不同的烷基,烯基,炔基或苄基卤反应,在化合物2-5的N(3)位置进行官能化。在人腺苷A(1),A(2A)和A(3)受体上的结合研究表明,在低纳摩尔范围内,特别是对A(3)受体,拮抗剂具有显着的拮抗作用。因此,可以视为该系列中的先导化合物的1-苄基-3-丙基-1H,3H-吡啶[2,1-f]嘌呤-2