Optimisation of pharmacokinetic properties to afford an orally bioavailable and selective V1A receptor antagonist
作者:William Arbuckle、James Baker、David Barn、Matilda Bingham、Angus Brown、Kirsteen Buchanan、Mark Craighead、Richard Goodwin、Susan Goutcher、Michael Kiczun、Amanda Lyons、Rachel Milne、Brian Montgomery、Susan Napier、Jeremy Presland、Hazel Sloan、Zara Turnbull、Grant Wishart
DOI:10.1016/j.bmcl.2011.05.092
日期:2011.8
The previously described lead compound 5 is a potent and selective V1A antagonist with affinity at both the rat and human receptor, but displays poor oral bioavailability and moderate clearance. We report herein the successful optimisation of the pharmacokinetic (PK) properties to afford the potent, selective, orally bioavailable and CNS penetrant compound 15f. A custom optimisation approach was required which demonstrated the value of using early, rapid in vivo PK studies to show improvements in oral exposure. Such assays may be of particular value where low oral bioavailability is anticipated to be multifactorial (e.g., permeability, gut wall metabolism and/or transport) where satisfactory modelling of in vitro data is likely to be difficult within a drug discovery context. (C) 2011 Published by Elsevier Ltd.