%0 Journal Article
%T Synthesis and testing of the first azobenzene mannobioside as photoswitchable ligand for the bacterial lectin FimH
%A Vijayanand Chandrasekaran
%A Katharina Kolbe
%A Femke Beiroth
%A Thisbe K. Lindhorst
%J Beilstein Journal of Organic Chemistry
%D 2013
%I 
%R 10.3762/bjoc.9.26
%X In order to allow spatial and temporal control of carbohydrate-specific bacterial adhesion, it has become our goal to synthesise azobenzene mannosides as photoswitchable inhibitors of type 1 fimbriae-mediated adhesion of E. coli. An azobenzene mannobioside 2 was prepared and its photochromic properties were investigated. The E¡úZ isomerisation was found to be highly effective, yielding a long-lived (Z)-isomer. Both isomers, E and Z, show excellent water solubility and were tested as inhibitors of mannoside-specific bacterial adhesion in solution. Their inhibitory potency was found to be equal and almost two orders of magnitude higher than that of the standard inhibitor methyl mannoside. These findings could be rationalised on the basis of computer-aided docking studies. The properties of the new azobenzene mannobioside have qualified this glycoside to be eventually employed on solid support, in order to fabricate photoswitchable adhesive surfaces.
%K azobenzene glycosides
%K bacterial adhesion
%K E/Z photoisomerisation
%K FimH antagonists
%K mannobiosides
%K molecular switches
%K sweet switches
%U http://dx.doi.org/10.3762/bjoc.9.26