Investigations on the 4-Quinolone-3-Carboxylic Acid Motif Part 5: Modulation of the Physicochemical Profile of a Set of Potent and Selective Cannabinoid-2 Receptor Ligands through a Bioisosteric Approach
作者:Claudia Mugnaini、Stefania Nocerino、Valentina Pedani、Serena Pasquini、Andrea Tafi、Maria De Chiaro、Luca Bellucci、Massimo Valoti、Francesca Guida、Livio Luongo、Stefania Dragoni、Alessia Ligresti、Avraham Rosenberg、Daniele Bolognini、Maria Grazia Cascio、Roger G. Pertwee、Ruin Moaddel、Sabatino Maione、Vincenzo Di Marzo、Federico Corelli
DOI:10.1002/cmdc.201100573
日期:2012.5
6‐disubstituted‐4‐quinolone‐3‐carboxamides, which are potent and selective CB2 ligands that exhibit poor water solubility, with the aim of improving their physicochemical profile and also of clarifying properties of importance for amide bond mimicry. Among the newly synthesized compounds, a 1,2,3‐triazole derivative (1‐(adamantan‐1‐yl)‐4‐[6‐(furan‐2‐yl)‐1,4‐dihydro‐4‐oxo‐1‐pentylquinolin‐3‐yl]‐1H‐1,2,3‐triazole)
选择三个杂环系统作为一系列 1,6-二取代-4-喹诺酮-3-甲酰胺的酰胺连接体的潜在生物电子等排体,这些化合物是有效且选择性的 CB2 配体,水溶性较差,目的是改善其理化性质概况以及澄清酰胺键模拟的重要性质。在新合成的化合物中,1,2,3-三唑衍生物(1-(金刚烷-1-基)-4-[6-(呋喃-2-基)-1,4-二氢-4-氧代-1 ‐戊基喹啉-3-基]-1 H ‐1,2,3-三唑)在物理化学和药效学特性方面都成为最有前途的。在体外测定时,该衍生物表现出反向激动剂活性,而在小鼠福尔马林试验中,它产生了被成熟的反向激动剂拮抗的镇痛作用。代谢研究允许将侧链羟基化衍生物鉴定为其唯一的代谢物,其外消旋形式仍显示出明显的 CB2 选择性,但其效力比母体化合物低 150 倍。