Design, synthesis and binding studies of a novel quadruple ADDA hydrogen-bond array.
Org Biomol Chem
; 10(25): 4899-906, 2012 Jul 07.
Article
em En
| MEDLINE
| ID: mdl-22610090
ABSTRACT
The design and synthesis of a novel ADDA hydrogen-bond array is described. The ureidodiimidazole motif (UDIM) 2 engages in interactions with complementary diamidonaphthyridine (DAN) 3 motifs with an association constant K(a) = 825 ± 16 M(-1) in chloroform. (1)H NMR and molecular modelling studies were carried out in order to explain the unexpected behaviour of this new supramolecular motif. These revealed that a combination of effects including; an energetic bias for the folded conformer, subtle differences in shape complementarity between the two components and the potential for self-association of UDIM 2 disfavour higher affinity interactions between the two components.
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Base de dados:
MEDLINE
Assunto principal:
Fenômenos de Química Orgânica
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article