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-(β-D-ribofuranosyl)-(22), 1-(2, 3, 5-tri-O-benzoyl-β-D-ribofuranosyl)-(21) and 1-(2, 3, 5-tri-O-acetyl-β-D-ribofuranosyl)-2(1H)-pyrazinone 4-oxides (24) showed high activity.
Preparation of labelled 2-methoxy-3-alkylpyrazines: synthesis and characterization of deuterated 2-methoxy-3-isopropylyrazine and 2-methoxy-3-isobutylpyrazine
作者:David A. Gerritsma、Ian D. Brindle、Timothy R.B. Jones、Alfredo Capretta
We employed herein a Linde Type A zeolite as a heterogeneous catalyst to condense amino acid amides with glyoxal affording pyrazinones. The synthesis was conducted in water without using corrosive reagents, organic solvents, or additives. The power of this “aquachemistry” was demonstrated through robust, continuous-flow synthesis.
The present disclosure provides a compound of Formula (I):
or a pharmaceutically acceptable salt thereof as described herein. The present disclosure also provides pharmaceutical compositions comprising a compound of Formula (I), processes for preparing compounds of Formula (I), and therapeutic methods for treating inflammatory disease.