Anticoccidials. V. Synthesis and anticoccidial activity of 2(1H)-pyrazinone 4-oxide derivatives.

Abstract
A series of 1-, 3-, 5- and 6-substituted 2(1H)-pyrazinone 4-oxides were synthesized and tested for anticoccidial activity. Of the compounds tested, 1-(.beta.-D-ribofuranosyl)-(22), 1-(2,3,5-tri-O-benzoyl-.beta.-D-ribofuranosyl)-(21) and 1-(2,3,5-tri-O-acetyl-.beta.-D-ribofuranosyl)-2(1H)-pyrazinone 4-oxides (24) showed high activity.