Applying the pro-drug approach to afford highly bioavailable antagonists of P2Y14
作者:Joël Robichaud、Jean-François Fournier、Sébastien Gagné、Jacques Yves Gauthier、Martine Hamel、Yongxin Han、Martin Hénault、Stacia Kargman、Jean-François Levesque、Yaël Mamane、Joseph Mancini、Nicolas Morin、Erin Mulrooney、Jin Wu、W. Cameron Black
DOI:10.1016/j.bmcl.2010.12.113
日期:2011.7
Our series of competitive antagonists against the G-protein coupled receptor P2Y(14) were found to be highly shifted in the presence of serum (>99% protein bound). A binding assay using 2% human serum albumin (HSA) was developed to guide further SAR studies and led to the identification of the zwitterion 2, which is substantially less shifted (18-fold) than our previous lead compound 1 (323-fold). However, as the bioavailability of 2 was low, a library of ester pro-drugs was prepared (7a-7j) and assessed in vitro. The most interesting candidates were then profiled in vivo and led to the identification of the pro-drug 7j, which possesses a substantially improved pharmacokinetic profile. (C) 2011 Published by Elsevier Ltd.