Synthesis and phosphodiesterase 5 inhibitory activity of new sildenafil analogues containing a phosphonate group in the 5 ′ -sulfonamide moiety of phenyl ring
作者:Dae-Kee Kim、Ju Young Lee、Hyun-Ju Park、Khac Minh Thai
DOI:10.1016/j.bmcl.2004.02.040
日期:2004.5
Synthesis of new sildenafil analogues containing a phosphonate group in the 5(')-sulfonamide moiety of the phenyl ring, 12a-e, 13a-d, and 14a-d, and evaluation of their in vitro PDE5 inhibitory activity are disclosed. Enzyme assays revealed that maximum 10-fold increase in PDE5 inhibitory activity, compared with sildenafil, was achieved by introducing a phosphonate group in the 5(')-sulfonamide moiety
公开了在苯环的12a-e,13a-d和14a-d的5(′)-磺酰胺部分中含有膦酸酯基的新的昔多芬类似物的合成,以及它们的体外PDE5抑制活性的评价。酶法测定显示,与西地那非相比,PDE5抑制活性最大提高了10倍,这是通过在5(')-磺酰胺部分引入膦酸酯基实现的。(PDE5:12d)配合物的对接模型显示12d的PDE5结合构象与sildenafil的构象完全匹配,而12d与cGMP部分重叠,其中12d的膦酸乙酯基团叠加在cGMP的环状磷酸基团上。