2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)acetamido)acetic acid
2-(4-(((Benzyloxy)carbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetic acid
2-(2-Isobutyramido-6-oxo-1H-purin-9(6H)-yl)acetic acid
2-(6-(((Benzyloxy)carbonyl)amino)-9H-purin-9-yl)acetic acid
2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(4-(((benzhydryloxy)carbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetamido)acetic acid
2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(2-(((benzhydryloxy)carbonyl)amino)-6-oxo-5H-purin-9(6H)-yl)acetamido)acetic acid
2-(6-((tert-Butoxycarbonyl)amino)-9H-purin-9-yl)acetic acid
2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)acetamido)acetic acid
2-(2-(((Benzyloxy)carbonyl)amino)-6-oxo-1,6-dihydro-9H-purin-9-yl)acetic acid
