1 RBQ (8s)-2-(morpholin-4-yl)-9-[2-(propan-2-yloxy)ethyl]-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4h-pyrimido[1,2-a]pyrimidin-4-one 1.000 2 7A5 (8s)-2-[(3r)-3-methylmorpholin-4-yl]-9-(3-methyl-2-oxobutyl)-8-(trifluoromethyl)-6,7,8,9-tetrahydro-4h-pyrimido[1,2-a]pyrimidin-4-one 0.719