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(1989)2,4-diamino-6-<2-(4-carboxyphenyl)ethyl>-5,6,7,8-tetrahydropyrido<4,3-d>pyrimidine
2,4-diamino-6-<2-(4-carbethoxyphenyl)ethyl>-5,6,7,8-tetrahydropyrido<4,3-d>pyrimidine
(S)-2-{4-[2-(2,4-Diamino-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl)-ethyl]-benzoylamino}-pentanedioic acid
(S)-2-{4-[2-(2,4-Diamino-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl)-ethyl]-benzoylamino}-pentanedioic acid dimethyl ester
2-amino-6-benzyl-4-hydrazino-5,6,7,8-tetrahydropyrido<4,3-d>pyrimidine