Pyridyl-2,5-Diketopiperazines as Potent, Selective, and Orally Bioavailable Oxytocin Antagonists: Synthesis, Pharmacokinetics, and In Vivo Potency
作者:Alan D. Borthwick、John Liddle、Dave E. Davies、Anne M. Exall、Christopher Hamlett、Deirdre M. Hickey、Andrew M. Mason、Ian E. D. Smith、Fabrizio Nerozzi、Simon Peace、Derek Pollard、Steve L. Sollis、Michael J. Allen、Patrick M. Woollard、Mark A. Pullen、Timothy D. Westfall、Dinesh J. Stanislaus
DOI:10.1021/jm201287w
日期:2012.1.26
A six-stage stereoselective synthesis of indanyl-7-(3′-pyridyl)-(3R,6R,7R)-2,5-diketopiperazines oxytocin antagonists from indene is described. SAR studies involving mono- and disubstitution in the 3′-pyridyl ring and variation of the 3-isobutyl group gave potent compounds (pKi > 9.0) with good aqueous solubility. Evaluation of the pharmacokinetic profile in the rat, dog, and cynomolgus monkey of those
茚满基-7-(3'-吡啶基)的6级立体选择性合成- (3 - [R,6 - [R,7 - [R)-2,5-二酮哌嗪类催产素从茚拮抗剂进行说明。SAR研究涉及3'-吡啶基环中的单-和解离以及3-异丁基的变化,给出了具有良好水溶性的强效化合物(p K i > 9.0)。在大鼠中,与低食蟹猴和人固有清除率的那些衍生物的狗,和食蟹猴,得到2',6'-二甲基-3'-吡啶基的药代动力学分布的评价- [R -仲-丁基吗啉酰胺Epelsiban(69),高效催产素拮抗剂(p K i= 9.9),在所有三种人血管加压素受体hV1aR,hV2R和hV1bR上具有> 31000倍的选择性,而没有明显的P450抑制作用。Epelsiban对四种物种的微粒体的内在清除率较低,具有良好的生物利用度(55%),与大鼠的阿托西班效价相当,但在体外的效价比阿托西班高100倍,并且在遗传毒性筛选中呈阴性。雌性大鼠令人满意的口服安全性。