2,5-Diketopiperazines as Potent, Selective, and Orally Bioavailable Oxytocin Antagonists. 3. Synthesis, Pharmacokinetics, and in Vivo Potency
作者:Alan D. Borthwick、Dave E. Davies、Anne M. Exall、Richard J. D. Hatley、Jennifer A. Hughes、Wendy R. Irving、David G. Livermore、Steve L. Sollis、Fabrizio Nerozzi、Klara L. Valko、Michael J. Allen、Marion Perren、Shalia S. Shabbir、Patrick M. Woollard、Mark A. Price
DOI:10.1021/jm060073e
日期:2006.7.1
A short, efficient, and highly stereoselective synthesis of a series of (3R,6R,7R)-2,5-diketopiperazine oxytocin antagonists and their pharmacokinetics in rat and dog is described. Prediction of the estimated human oral absorption (EHOA) using measured lipophilicity (CHI log D) and calculated size (cMR) has allowed us to rank various 2,5-diketopiperazine templates and enabled us to focus effort on
描述了一系列(3R,6R,7R)-2,5-二酮哌嗪催产素拮抗剂的短而有效且高度立体选择性的合成及其在大鼠和狗中的药代动力学。使用测得的亲脂性(CHI log D)和计算的大小(cMR)来预测估计的人类口服吸收(EHOA),使我们能够对各种2,5-二酮哌嗪模板进行排名,并使我们能够将精力集中在那些模板上的机会最大。人类的生物利用度高。这迅速导致2',4'-二氟苯基-二甲基酰胺25和苯并呋喃4在大鼠和狗中具有高水平的效力(pK(i))和良好的生物利用度。体内二甲酰胺25的效力比4强(> 20倍),并且对血管加压素受体的选择性很高,hV1a / hV1b大于10,000,hV2大约为500。