1 YY6 7-(cyclohexylamino)-3-(2,6-dichloro-3,5-dimethoxyphenyl)-1-{(3s)-1-[(2e)-4-(dimethylamino)but-2-enoyl]pyrrolidin-3-yl}-3,4-dihydropyrimido[4,5-D]pyrimidin-2(1h)-one 1.000 2 YY4 3-(2,6-dichloro-3,5-dimethoxyphenyl)-1-{(3s)-1-[(2e)-4-(dimethylamino)but-2-enoyl]pyrrolidin-3-yl}-7-(phenylamino)-3,4-dihydropyrimido[4,5-D]pyrimidin-2(1h)-one 1.000 3 YY9 3-(2,6-dichloro-3,5-dimethoxyphenyl)-1-{1-[4-(dimethylamino)but-2-enoyl]piperidin-4-yl}-7-(phenylamino)-3,4-dihydropyrimido[4,5-D]pyrimidin-2(1h)-one 0.933 4 YY7 3-(2,6-dichloro-3,5-dimethoxyphenyl)-1-{(3s)-1-[(2e)-4-(dimethylamino)but-2-enoyl]pyrrolidin-3-yl}-7-(methylamino)-3,4-dihydropyrimido[4,5-D]pyrimidin-2(1h)-one 0.841 5 YY5 3-(2,6-dichloro-3,5-dimethoxyphenyl)-1-{(3s)-1-[(2e)-4-(dimethylamino)but-2-enoyl]pyrrolidin-3-yl}-7-[(propan-2-yl)amino]-3,4-dihydropyrimido[4,5-D]pyrimidin-2(1h)-one 0.804