Inhibition of Monoamine Oxidase-B by Condensed Pyridazines and Pyrimidines: Effects of Lipophilicity and Structure−Activity Relationships
作者:Cosimo Altomare、Saverio Cellamare、Luciana Summo、Marco Catto、Angelo Carotti、Ulrike Thull、Pierre-Alain Carrupt、Bernard Testa、Helen Stoeckli-Evans
DOI:10.1021/jm981005y
日期:1998.9.1
the condensed pyridazines were reversible inhibitors of MAO-B with little or no MAO-A effects, the pyrimidine derivatives proved to be reversible and selective MAO-A inhibitors. Substituents on the diazine nucleus modulated enzyme inhibition. A QSAR analysis of X-substituted 3-X-phenyl-5H-indeno[1,2-c]pyridazin-5-ones showed lipophilicity to increase MAO-B and not MAO-A inhibitory activity.
合成了许多缩合的哒嗪和嘧啶,并测试了它们的单胺氧化酶-A(MAO-A)和MAO-B抑制活性。通过测量分配系数和RP-HPLC容量因子检查了它们的亲脂性,发现了一些特殊的电子和构象效应。通过X射线晶体学和RP-HPLC保留的热力学研究获得了进一步的见解。构效关系突出了决定选择性和抑制效能的主要因素。因此,尽管大多数缩合的哒嗪是可逆的MAO-B抑制剂,几乎没有或没有MAO-A效应,但嘧啶衍生物被证明是可逆的和选择性的MAO-A抑制剂。取代基对二嗪核的酶抑制作用。X取代的3-X-苯基-5H-茚并[1,