[摘要]：In the present work, we used virtual screening (VS) of the ZINC database of 2.5 million compounds to seek new PI3K inhibitory scaffolds. The VS flowchart implemented various filters, including a 3D-database screen, and extensive docking studies, to derive 89 derivatives that were experimentally assayed against the four PI3K isoforms. Seven compounds showed inhibitory activities between 1 and 100 mu M, with four being sufficiently potent to constitute potential new scaffolds. The binding conformations of these four were analyzed to provide a rationalization of their activity profile. (C) 2009 Elsevier Ltd. All rights reserved.
