O. Rusin et V. Kral, 1,1 '-Binaphthyl substituted calixresorcinols-methyl red complexes: receptors for optical saccharide sensing, TETRAHEDR L, 42(25), 2001, pp. 4235-4238
Novel 1,1'-binaphthyl substituted calixresorcinols (1 and 2) were synthesiz
ed. Macrocycles 1 and 2 form water-soluble complexes with methyl red 3, whi
ch are, in turn, able to bind saccharides by a competition process in aqueo
us media and which exhibit color transitions during titration. Preferential
binding of oligosaccharides compared to monosaccharides was found. The ass
ociation constants of effectively bound oligosaccharides in aqueous media V
aried around 10(3) M-1. (C) 2001 Elsevier Science Ltd. All rights reserved.