8-Benzyltetrahydropyrazino[2,1-<i>f</i>]purinediones: Water-Soluble Tricyclic Xanthine Derivatives as Multitarget Drugs for Neurodegenerative Diseases
作者:Andreas Brunschweiger、Pierre Koch、Miriam Schlenk、Felipe Pineda、Petra Küppers、Sonja Hinz、Meryem Köse、Stefan Ullrich、Jörg Hockemeyer、Michael Wiese、Jag Heer、Christa E. Müller
DOI:10.1002/cmdc.201402082
日期:2014.5.9
designed as tricyclic xanthine derivatives containing a basic nitrogen atom in the tetrahydropyrazine ring to improve water solubility. A library of 69 derivatives was prepared and evaluated in radioligand binding studies at adenosine receptor (AR) subtypes and for their ability to inhibit monoamine oxidases (MAO). Potent dual‐target‐directed A1/A2A adenosine receptor antagonists were identified. Several
8-苄基取代的四氢吡嗪并[ 2,1 - f ]嘌呤二酮被设计为在四氢吡嗪环中包含碱性氮原子的三环黄嘌呤衍生物,以提高水溶性。制备了69种衍生物的文库,并在放射性配体结合研究中评估了腺苷受体(AR)亚型及其抑制单胺氧化酶(MAO)的能力。确定了有效的双靶标定向A 1 / A 2A腺苷受体拮抗剂。几种化合物显示出三重靶标抑制作用。最好的化合物之一是8-(2,4-二氯-5-氟苄基)-1,3-二甲基-6,7,8,9-四氢吡嗪并[2,1 - f ]嘌呤-2,4(1 H,3 H)-dione(72)(人类AR:K i A 1 217 n M,A 2A 233 n M;IC 50 MAO-B:508 n M)。二氯化化合物36 [8-(3,4-二氯苄基)-1,3-二甲基-6,7,8,9-四氢吡嗪并[2,1 - f ]嘌呤-2,4(1 H,3 H)-二酮]被认为是大鼠中最佳的三靶标药物(K i A 1