Dipeptides as Effective Prodrugs of the Unnatural Amino Acid (+)-2-Aminobicyclo[3.1.0]hexane-2,6-dicarboxylic Acid (LY354740), a Selective Group II Metabotropic Glutamate Receptor Agonist
作者:Ana Belén Bueno、Iván Collado、Alfonso de Dios、Carmen Domínguez、José Alfredo Martín、Luisa M. Martín、María Angeles Martínez-Grau、Carlos Montero、Concepción Pedregal、John Catlow、D. Scott Coffey、Michael P. Clay、Anne H. Dantzig、Terry Lindstrom、James A. Monn、Haiyan Jiang、Darryle D. Schoepp、Robert E. Stratford、Linda B. Tabas、Joseph P. Tizzano、Rebecca A. Wright、Marc F. Herin
DOI:10.1021/jm050235r
日期:2005.8.1
(+)-2-Aminobicyclo[3.1.0]hexane-2,6-dicarboxylic acid (1), also known as LY354740, is a highly potent and selective agonist for group II metabotropic glutamate receptors (mGlu receptors 2 and 3) tested in clinical trials. It has been shown to block anxiety in the fear-potentiated startle model. Its relatively low bioavailability in different animal species drove the need for an effective prodrug form that would produce a therapeutic response at lower doses for the treatment of anxiety disorders. We have investigated the increase of intestinal absorption of this compound by targeting the human peptide transporter hPepT1 for active transport of di- and tripeptides derived from 1. We have found that oral administration of an N dipeptide derivative of 1 (12a) in rats shows up to an 8-fold increase in drug absorption and a 300-fold increase in potency in the fear-potentiated startle model in rats when compared with the parent drug 1.
(+)–2–氨基双环[3.1.0]己烷–2,6–二羧酸(1),也称为LY354740,是一种在临床试验中被测试的高度有效和选择性的组II metabotropic 谷氨酸受体(mGlu 受体2和3)激动剂。它已被证明可以阻止恐惧增强型惊跳模型中的焦虑。由于该化合物在不同动物物种中相对较低的生物利用度,因此需要一种有效的前药形式,以在较低剂量下产生治疗反应,用于治疗焦虑症。我们研究了通过靶向人类肽转运蛋白hPepT1主动运输来源于1的二肽和三肽,从而增加该化合物的肠道吸收。我们发现,与母体药物1相比,向大鼠口服给予1的N二肽衍生物(12a)表现出高达8倍的药物吸收增加,并且在大鼠的恐惧增强型惊跳模型中表现出300倍的效力增加。