tert-butyl [bis(3-aminopropyl)amino]acetate

tert-butyl {3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-trien-7-yl}acetate

tert-butyl 3-{3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-trien-7-yl}propionate

tert-butyl 3-{3,11-bis(tert-butoxycarbonylmethyl)-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-trien-7-yl}propionate

tert-butyl {3,11-bis(2-nitrobenzenesulfonyl)-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-trien-7-yl}acetate