Modulating the Cyclic Guanosine Monophosphate Substrate Selectivity of the Phosphodiesterase 3 Inhibitors by Pyridine, Pyrido[2,3-d]pyrimidine Derivatives and Their Effects upon the Growth of HT-29 Cancer Cell Line
作者:Ashraf Hassan Abadi、Marwa Saeed Hany、Shimaa Awadain Elsharif、Amal Abdel Haleem Eissa、Bernard DeWayne Gary、Heather Nicole Tinsley、Gary Anthony Piazza
DOI:10.1248/cpb.c12-00993
日期:——
Analogues with the scaffolds of 3-cyano-4-alkoxyphenyl-6-bromoaryl-2-pyridone and 2-amino-3-cyano-4-alkoxyphenyl-6-bromoarylpyridine were synthesized. Cyclization of the 2-amino derivatives with formic acid and formamide gave the corresponding pyrido[2,3-d]pyrimidin-4(3H)-one and the pyrido[2,3-d]-pyrimidin-4-amine derivatives, respectively. Active phosphodiesterase 3 (PDE3) inhibitors were identified from each of the four aforementioned scaffolds. This is the first report that pyrido[2,3-d]pyrimidin-4(3H)-one and pyrido[2,3-d]pyrimidin-4-amine derivatives can inhibit PDE3. The analogues with the pyridone and pyrido[2,3-d]pyrimidin-4(3H)-one scaffolds inhibited both cAMP and cyclic guanosine monophosphate (cGMP) hydrolysis by PDE3, while the amine containing scaffolds were more selective for cGMP hydrolysis. This observation may set the base for substrate-selective pharmacological modulation of this important class of drug targets and with less side effects, particularly tachcardia. The dual inhibitors of PDE3 were more potent inhibitor towards the growth of HT-29 cancer cell lines.
以 3-氰基-4-烷氧基苯基-6-溴芳基-2-吡啶酮和 2-氨基-3-氰基-4-烷氧基苯基-6-溴芳基吡啶为支架合成了类似物。2- 氨基衍生物与甲酸和甲酰胺环化后,分别得到相应的吡啶并[2,3-d]嘧啶-4(3H)-酮和吡啶并[2,3-d]嘧啶-4-胺衍生物。上述四种支架中的每一种都鉴定出了具有活性的磷酸二酯酶 3 (PDE3) 抑制剂。这是首次报道吡啶并[2,3-d]嘧啶-4(3H)-酮和吡啶并[2,3-d]嘧啶-4-胺衍生物能抑制 PDE3。含有吡啶酮和吡啶并[2,3-d]嘧啶-4(3H)-酮支架的类似物可同时抑制 PDE3 对 cAMP 和环鸟苷单磷酸(cGMP)的水解,而含有胺的支架对 cGMP 的水解更具选择性。这一观察结果可能为这一类重要药物靶点的底物选择性药理调节奠定了基础,而且副作用较小,尤其是心动过速。PDE3 的双重抑制剂对 HT-29 癌细胞株的生长具有更强的抑制作用。