Predictive binding of .beta.-carboline inverse agonists and antagonists via the CoMFA/GOLPE approach
作者:Michael S. Allen、Anthony J. LaLoggia、Linda J. Dorn、Michael J. Martin、Gabriele Costantino、Timothy J. Hagen、Konrad F. Koehler、Phil Skolnick、James M. Cook
DOI:10.1021/jm00100a004
日期:1992.10
(isobutoxy, 7, IC50 = 93 nM; isopentoxy, 9, IC50 = 104 nM) display significantly higher affinity for the BzR than either the beta-branched (sec-butoxy, 6, IC50 = 471 nM; tert-butyl ketone, 12, IC50 = 358 nM) or delta-branched (isopentoxy, 8, IC50 = 535 nM) analogs. An exception to this rule is the gamma-branched 3-benzyloxy derivative 10 (IC50 > 1000 nM) which appears to have a chain length that is too long
描述了六个新的3-取代的β-咔啉(6-10、12)对苯二氮杂ze受体(BzR)的合成和亲和力。这些类似物既可用于探测苯并二氮杂receptor受体中疏水口袋的尺寸,也可用于测试先前报道的3D-QSAR回归模型的预测能力。在合成的新类似物中,γ-支链衍生物(异丁氧基,7,IC50 = 93 nM;异戊氧基,9,IC50 = 104 nM)显示出对BzR的亲和力明显高于β-支链(仲丁氧基,6, IC50 = 471 nM;叔丁基酮,12,IC50 = 358 nM)或δ-支链(异戊氧基,8,IC50 = 535 nM)类似物。该规则的一个例外是伽马支化的3-苄氧基衍生物10(IC50> 1000 nM),其链长似乎太长而无法被BzR容纳。使用原始回归模型对这六个新的β-咔啉的预测标准误差显着低于在训练集上进行交叉验证的标准误差估计,因此,使用该模型进行的预测要好于预期。为了获得更可靠的预测,使