Tert butyl 12 amino 4 7 10 trioxadodecanoate July 8, 2019 16 32 64 128 Tert-butyl 12-hydroxy-4 7 10-trioxadodecanoate Tert-butyl 3 9-diazaspiro 5.5 undecane-3-carboxylate Tert-butyl 3 5-dioxopiperidine-1-carboxylate Tert-butyl 4-(4 4 5 5-tetramethyl-1 3 2-dioxaborolan-2-yl)-1 2 3 6-tetrahydropyridine-1-carboxylate