Synthesis and phosphodiesterase activity of carboxylic acid mimetics of cyclic guanosine 3',5'-monophosphate
作者:Deen Tulshian、Michael Czarniecki、Ronald J. Doll、Ho Sam Ahn
DOI:10.1021/jm00061a012
日期:1993.4
Synthetic analogs of the natural product griseolic acid in which a guanine base is substituted for the adenine have been prepared. The best of these compounds inhibits a cyclic guanosine 3',5'-monophosphate (cGMP) phosphodiesterase preparation with an IC50 of 0.34 microM but is a very weak inhibitor of a cyclic adenosine 3',5'-monophosphate (cAMP) phosphodiesterase. An exploration of stereochemistry
已经制备了其中鸟嘌呤碱基取代了腺嘌呤的天然产物灰黄酸的合成类似物。这些化合物中最好的一种可抑制环状鸟苷3',5'-单磷酸(cGMP)磷酸二酯酶制剂,IC50为0.34 microM,但对环状腺苷3',5'-单磷酸(cAMP)磷酸二酯酶的抑制作用非常弱。立体化学的探索表明抑制剂中羧酸的构型和环融合对于有效的cGMP PDE抑制很重要。PDE抑制对核糖中2'或4'氧原子的存在不敏感,但是当去除3'氧时抑制作用降低。存在一元羧酸的一组选定的类似物是较弱的抑制剂。结构活性关系与在cGMP中充当磷酸根阴离子模拟物的羧酸官能团一致。对两种抑制剂的构象分析支持了这一概念。