2-Ethoxybenzoxazole as a bioisosteric replacement of an ethyl benzoate group in a human rhinovirus (HRV) capsid binder
作者:Renee N. Brown、Rachel Cameron、David K. Chalmers、Stephanie Hamilton、Angela Luttick、Guy Y. Krippner、Darryl B. McConnell、Roland Nearn、Pauline C. Stanislawski、Simon P. Tucker、Keith G. Watson
DOI:10.1016/j.bmcl.2005.02.054
日期:2005.4
A series of pyridazinylpiperidinyl capsid-binding compounds with novel bicyclic substituents were synthesized and screened against human rhinovirus (HRV). Several 2-alkoxy- and 2-alkylthio-benzoxazole and benzothiazole derivatives showed excellent anti-HRV activity. When tested against a panel of 16 representative HRV types the 2-ethoxybenzoxazole derivative 13 was found to have superior HRV activity (median EC50 3.88 ng/mL) to known capsid-binders Pleconaril and Pirodavir. Compound 13 illustrates that a 2-alkoxybenzoxazole group can be an effective bioisostere for a benzoate ester or benzaldehyde oxime ether functionality. (c) 2005 Elsevier Ltd. All rights reserved.