Synthesis and biological evaluation of guanidino compounds endowed with subnanomolar affinity as competitive inhibitors of maize polyamine oxidase.
Previous studies on agmatine and its derivatives suggested that the presence of hydrophobic groups on the guanidine moiety was a crucial key for inhibitory activity of maize polyamine oxidase. Accordingly, new lipophilic agmatine and iminoctadine derivatives were synthesized and tested for their ability to inhibit this enzyme. Several compounds showed an affinity in the nanomolar range, while a cyclopropylmethyl derivative of iminoctadine was found to be the most potent inhibitor of maize polyamine oxidase reported so far (Ki = 0.08 nM).
Manetti
Fabrizio
F
Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Via Alcide de Gasperi 2, I-53100 Siena, Italy.
Cona
Alessandra
A
Angeli
Lucilla
L
Mugnaini
Claudia
C
Raffi
Francesco
F
Capone
Caterina
C
Dreassi
Elena
E
Zizzari
Alessandra Tania
AT
Tisi
Alessandra
A
Federico
Rodolfo
R
Botta
Maurizio
M
D000376:Agmatine / Q000031:analogs & derivatives* / Q000494:pharmacology; D001665:Binding Sites; D001667:Binding, Competitive; D004791:Enzyme Inhibitors / Q000138:chemical synthesis* / Q000493:pharmacokinetics / Q000494:pharmacology; D006146:Guanidines / Q000138:chemical synthesis* / Q000493:pharmacokinetics / Q000494:pharmacology; D000587:Oxidoreductases Acting on CH-NH Group Donors / Q000037:antagonists & inhibitors*; D013329:Structure-Activity Relationship; D003313:Zea mays / Q000201:enzymology*; D000097667:Polyamine Oxidase
D000376:Agmatine; D004791:Enzyme Inhibitors; D006146:Guanidines; D000587:Oxidoreductases Acting on CH-NH Group Donors; D000097667:Polyamine Oxidase; C012343:guazatine