Comparison of the Binding of 3-Fluoromethyl-7-sulfonyl-1,2,3,4-tetrahydroisoquinolines with Their Isosteric Sulfonamides to the Active Site of Phenylethanolamine <i>N</i>-Methyltransferase
作者:Gary L. Grunewald、Mitchell R. Seim、Rachel C. Regier、Jennifer L. Martin、Christine L. Gee、Nyssa Drinkwater、Kevin R. Criscione
DOI:10.1021/jm060466d
日期:2006.9.1
analysis of the crystal structure of human PNMT (hPNMT) in complex with 7 indicated that the sulfonamide oxygens, and not the sulfonamide -NH-, formed favorable interactions with the enzyme. Thus, we hypothesized that replacement of the sulfonamide -NH- with a methylene group could result in compounds that would retain potency at PNMT and that would have increased lipophilicity, thus increasing the likelihood
3-氟甲基-7-(N-取代的氨基磺酰基)-1,2,3,4-四氢异喹啉(14、16和18-22)是苯基乙醇胺N-甲基转移酶(PNMT)的高效抑制剂。用3-氟甲基-7-(N-烷基氨基磺酰基)-1,2,3,4-四氢异喹啉,例如16进行的分子模型研究表明,磺酰胺-NH-可与Lys57的侧链形成氢键。但是,SAR研究和对人类PNMT(hPNMT)与7的复合物的晶体结构的分析表明,磺酰胺氧而不是磺酰胺-NH-与酶形成了良好的相互作用。因此,我们假设用亚甲基取代磺酰胺-NH-可能会导致化合物保留PNMT的效力并增加亲脂性,因此增加了他们穿越血脑屏障的可能性。合成了一系列3-氟甲基-7-磺酰基-1,2,3,4-四氢异喹啉(23-30),并评估了它们对PNMT的抑制能力和对α2-肾上腺素受体的亲和力。将这些化合物与其等位磺酰胺(14、16和18-22)进行比较,结果表明,与它们相应的磺酰胺相比,砜具有更高的