1 UJB (2s)-1-[(5-chloro-2-thienyl)methyl]-8-[(3r,5r)-3,5-dimethylmorpholin-4-yl]-2-(trifluoromethyl)-3,4-dihydro-2h-pyrimido[1,2-a]pyrimidin-6-one 1.000 2 1TT (8s)-9-[(5-chloranylpyridin-3-yl)methyl]-2-[(3r)-3-methylmorpholin-4-yl]-8-(trifluoromethyl)-6,7,8,9a-tetrahydro-3h-pyrimido[1,2-a]pyrimidin-4-one 0.818