Analogues of the antimalarial pentaquine, 1, in which the nature of the sid
e-chain on the 8-amino position was varied, were prepared and evaluated for
anticoccidial activity both in vitro and in vivo. Specifically, both the i
nter-nitrogen distance and the nature of the terminal amino group were inve
stigated. Novel analogues of equal or improved efficacy in vitro and in viv
o to pentaquine were discovered. (C) 1999 Elsevier Science Ltd. All rights
reserved.