Cyclodextrins Conjugated with Other Kinds of Hosts

Cyclodextrins Conjugated with Other Kinds of Hosts [Pg.51]

CyDs were coupled with calixarene or crown ether to improve their binding affinity. j8-CyD functionalized with diaza-18-crown-6 at the primary face 68 showed 7-10-fold greater affinities for aromatic ammonium ions [178] and the introduction of a benzo-18-crown-6 moiety at the secondary-hydroxy side 69 improved chiral recognition for tryptophan (Trp), whereas its introduction at the primary-hydroxy side 70 was not effective for the Trp recognition [179]. [Pg.51]

Crown ether-capped jS-CyD 71 showed a binding afEnity for 8-anilino-l-naphthalenesulfonate (AN S) 88 times higher than the native j8-CyD, but the affinity for Acridine Red and Rhodamine B was lower than that of the native 8-CyD [Pg.52]

A yS-CyD-calrx[4]arene dyad 72 and a calrxarene-bridged bis(j8-CyD) 73 showed enhanced binding ability with some fluorescence dyes compared to the native p-CyD [Pg.52]

The CyD framework can be used as a scaffold to construct polyvalent receptors [Pg.52]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...