G. Brand et al., CYCLOPOLYAMINES - SYNTHESIS OF CYCLOSPERMIDINES AND CYCLOSPERMINES, ANALOGS OF SPERMIDINE AND SPERMINE, Tetrahedron letters, 35(46), 1994, pp. 8609-8612
The synthesis of a series of cyclic analogues of the naturally occurri
ng polyamines putrescine, spermidine and spermine was achieved. The cy
clic analogues of putrescine named cycloputrescine [4,n] were composed
of cycloputrescine in which the two primary amines were connected wit
h a polymethylene chain of variable length (n = 3, 4, 5). Cyclospermid
ines [4,n] and Cyclospermines [4,n] were composed of a cycloputrescine
[4,n] moiety mono- or difunctionalized with an aminopropyl chain resp
ectively.