Tert-butyl 6-oxohexahydro-1H-cyclopenta[c]pyridine-2(3h)-carboxylate
Octahydrospiro[cyclopenta[c]pyridine-6,2'-[1,3]dioxolane]
Tetrahydro-1H-cyclopenta[c]pyridine-3,6(2h,4h)-dione
2-Amino-8-chloropyrido[3,4-d]pyrimidin-4(3h)-one
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