diethyl 2-[[4-[(2,4-diaminopyrido[2,3-d]pyrimidin-6-yl)methylamino]benzoyl]amino]pentanedioate

N'-(2-Amino-6-bromomethyl-pyrido[2,3-d]pyrimidin-4-yl)-N,N-dimethyl-formamidine

(S)-2-({4-[(2,4-Diamino-pyrido[2,3-d]pyrimidin-6-ylmethyl)-amino]-naphthalene-1-carbonyl}-amino)-pentanedioic acid diethyl ester

diethyl N-<4-<<(2,4-diaminopyrido<2,3-d>pyrimidin-6-yl)methyl>methylamino>naphthoyl>-L-glutamate

diethyl (4-(((2,4-bis((triphenyl-l5-phosphaneylidene)amino)pyrido[2,3-d]pyrimidin-6-yl)methyl)(methyl)amino)-1-naphthoyl)-L-glutamate