p. 990 - 994
(2007/10/02)N1,N4-dibenzyloxycarbonyl-N8-tert-butoxycarbonylspermidine
N1-benzyloxycarbonyl-N3-tert-butyloxycarbonyl-spermidine
dibenzyl dicarbonate
acetic anhydride
benzyl (4-aminobutyl)(3-(((benzyloxy)carbonyl)amino)propyl)carbamate