摘要:
A process for preparing a compound of formula (I) or a salt thereof: (I) wherein R1 is H or optionally substituted aryl or heteroaryl; comprising reacting 2,3- dichloropyrazine with a suitable diaryl imine followed by hydrolysis.
摘要:
Processes including preparation of trans -4-[(3-amino-5-oxo-4,5-dihydro-[1,2,4]triazin-6-ylmethyl)-carbamoyl]-cyclohexanecarboxylic acid methyl ester, and its conversion to trans -4-(4-amino-5-susbtituted-imidazo[5,1-ƒ][1,2,4]triazin-7-yl)-cyclohexanecarboxylic acid compounds.