Synthesis and phosphodiesterase inhibitory activity of new sildenafil analogues containing a carboxylic acid group in the 5′-sulfonamide moiety of a phenyl ring
作者:Dae-Kee Kim、Ju Young Lee、Namkyu Lee、Do Hyun Ryu、Jae-Sun Kim、Sukho Lee、Jin-Young Choi、Je-Ho Ryu、Nam-Ho Kim、Guang-Jin Im、Won-Son Choi、Tae-Kon Kim
DOI:10.1016/s0968-0896(01)00200-0
日期:2001.11
alkoxy group (R) of the phenyl ring, the sulfonamide type (X), and the length of the methylene chain linking the carboxylic acid, and the results were discussed in detail. From this study, we have clearly demonstrated that introduction of a carboxylic acid group to the 5'-sulfonamide moiety of the phenyl ring greatly enhanced PDE5 inhibitory activity, probably by mimicking the phosphate group of cGMP
由易得的起始化合物6a-b和环胺3-5按三步顺序制备在苯环9a-1的5'-磺酰胺中具有羧酸基的新西地那非类似物。在酶测定中,已证明所有目标化合物9a-1在抑制5型磷酸二酯酶(PDE5)方面比西地那非更有效4-3-4倍。通过改变苯环的烷氧基(R),磺酰胺类型(X)和连接羧酸的亚甲基链的长度来研究对IC(50)值的影响,并详细讨论了结果。从这项研究中,我们已经清楚地证明,在苯环的5'-磺酰胺部分引入羧酸基团会大大增强PDE5的抑制活性,可能是通过模仿cGMP的磷酸基团。哌啶基丙酸衍生物9i具有更高的PDE5抑制活性,与西地那非相比,具有比PDE同工酶更好的选择性,已被选择用于更详细的生物学研究。