New N6- or N(9)-hydroxyalkyl substituted 8-azaadenines or adenines as effective A1 adenosine receptor ligands
作者:Giuliana Biagi、Irene Giorgi、Michele Leonardi、Oreste Livi、Federica Pacchini、Valerio Scartoni、Barbara Costa、Antonio Lucacchini
DOI:10.1016/s0223-5234(03)00147-8
日期:2003.9
In this paper we describe synthesis and biological assays of some A(1) ligands more water-soluble than the effective, but very lipophilic, 8-azaadenines and adenines discovered in the past and obtained introducing on N(6) or N(9) substituent a hydroxy group. Five of the new N(6)-hydroxyalkyl- and N(6)-hydroxycycloalkyl-2-phenyl-9-benzyl-8-azaadenines showed very high affinity (Ki<40 nM) and selectivity
在本文中,我们描述了一些A(1)配体的合成和生物学分析,这些配体比过去发现并在N(6)或N(9)上引入的有效但非常亲脂的8-azaadenines和腺嘌呤水溶性更高。取代基是羟基。新的N(6)-羟烷基-和N(6)-羟基环烷基-2-苯基-9-苄基-8-氮杂腺嘌呤中的五个显示出非常高的亲和力(Ki <40 nM)和对A(1)腺苷受体的选择性。在制备的2-苯基-9-(2-羟基-3-烷基)-8-氮杂腺嘌呤或腺嘌呤中,具有较高A(1)亲和力和选择性的化合物可生成2-苯基-9-(2-羟基-3 -丙基)-N(6)-环戊基-和环己基-8-氮杂腺嘌呤,Ki分别为2.2 +/- 0.2 nM和2.8 +/- 0.3 nM。从水溶性的观点来看,最有趣的化合物是2-苯基-9-(2-羟基-3-丙基)-8-氮杂腺嘌呤,CLogP为1。