Isoxazolo-[3,4-<i>d</i>]-pyridazin-7-(6<i>H</i>)-one as a Potential Substrate for New Aldose Reductase Inhibitors
作者:Luca Costantino、Giulio Rastelli、M. Cristina Gamberini、M. Paola Giovannoni、Vittorio Dal Piaz、Paola Vianello、Daniela Barlocco
DOI:10.1021/jm981107o
日期:1999.6.1
5-acetyl-4-amino-(4-nitro)-6-substituted-3(2H)pyridazinones (3, 4) were used as simplified substrates for the synthesis of new aldose reductase inhibitors with respect to the previously reported 5, 6-dihydrobenzo[h]cinnolin-3(2H)one-2 acetic acids (1). Moreover, a few derivatives lacking the 5-acetyl group were prepared. Several compounds derived from 2 displayed inhibitory properties comparable to those
异恶唑-[3,4-d]-哒嗪-7-(6H)-一(2)及其相应的开放衍生物5-乙酰基-4-氨基-(4-硝基)-6-取代的3(2H)相对于先前报道的5,6-二氢苯并[h] cinnolin-3(2H)one-2乙酸(1),哒嗪酮(3,4)被用作合成新的醛糖还原酶抑制剂的简化底物。此外,制备了一些缺少5-乙酰基的衍生物。衍生自2的几种化合物具有与索比尼尔相当的抑制特性。在这一类中,带有吸电子取代基的苯基在6位上的存在被证明是有益的,而与它在环上的位置(5g,jl)无关。乙酸衍生物比丙酸和丁酸类似物更有效。相反,所有的单环化合物(6-8)都是无活性的或仅是弱活性的。还研究了3-甲基-4-(对氯苯基)异唑并-[3,4-d]-哒嗪-7-(6H)-一乙酸(5g),它是最有效的衍生物。分子建模研究,以评估与模型1在与酶的相互作用中可能存在的相似性。