6-Substituted Purines as Inhibitors of 15-Lipoxygenase; a Structure-Activity Study
作者:Anders Bråthe、Lise-Lotte Gundersen、Karl E. Malterud、Frode Rise
DOI:10.1002/ardp.200400951
日期:2005.4
have a drug potential. In this study, purines with a variety of substituents have been examined as inhibitors of 15‐lipoxygenase (15‐LO) from soybeans. Several 6‐substitued purines where the purine ring and a phenyl ring in the substituent were separated by a “spacer” were synthesized and their ability to inhibit the enzyme was explored. Sepa ration of the purine and the phenyl rings with none, one or
15-脂氧合酶 (15-LO) 与低密度脂蛋白 (LDL) 的氧化有关,该过程被认为对动脉粥样硬化的发展以及其他致病条件很重要。15-LO 的强效和选择性抑制剂可能具有药物潜力。在这项研究中,已将具有多种替代品的嘌呤作为来自大豆的 15-脂肪氧化酶 (15-LO) 的抑制剂进行了检测。合成了几种6-取代的嘌呤,其中取代基中的嘌呤环和苯环被“间隔基”隔开,并探索了它们抑制酶的能力。将嘌呤和苯环与无、一个或两个 sp3-碳分离导致基本上无活性的化合物,反式-苯乙烯基嘌呤和苯乙炔基嘌呤,另一方面,它们表现出接近众所周知的 15-LO 抑制剂槲皮素的活性。当“间隔基”是反式环丙基环时,也发现了高活性。垫片的形状很重要;相应的顺式环丙基嘌呤对酶的亲和力要低得多。无论 N-取代基位于 N-9 还是 N-7 上,即使 N-取代基相对较大,也仅发现对 15-LO 的抑制活性存在微小差异。此外,2 位和 8