Metal-nitroxyl interactions. 22. Copper-nitroxyl spin-spin interaction as a probe of weak orbital overlaps in derivatives of copper tetraphenylporphyrin
Synthesis of New Glucosylated Porphyrins Bearing an α‐d‐Linkage
摘要:
This paper presents the synthesis of two new glucosyl tritolylporphyrins in which the carbohydrate moiety is connected through a carboxymethyl glycosidic alpha-D-linkage. These compounds have been obtained by reaction between porphyrins bearing an amino function with a lactone prepared from the available disaccharide isomaltulose. The photocytotoxicity of these compounds against K562 human chronic myelogenous leukemia cells has been evaluated in comparison to Photofrin II.
Synthèse et analyse structurale de nouvelles <i>méso</i>-arylporphyrines glycosylées en vue de l'application en photothérapie des cancers
作者:Olivier Gaud、Robert Granet、Mourad Kaouadji、Pierre Krausz、Jean Claude Blais、Gerard Bolbach
DOI:10.1139/v96-053
日期:1996.4.1
The synthesis of 13 novel meso-glycosylarylporphyrins where the carbohydrate moiety is separated from the aryl substituent by a spacer arm is described. These compounds were synthesized by different methods, either by direct glycosylation of the ortho- or para-hydroxyalkoxyarylporphyrin or by condensation of glycosylated aldehyde with pyrrole or meso-(p-tolyl)dipyrromethane. In all cases, a β configuration
Application of two-dimensional NMR to the structure determination of an unsymmetrical monosubstituted bisporphyrin
作者:R. Costa i Sala、J.-M. Latour、M. Bardet
DOI:10.1002/mrc.1260310917
日期:1993.9
The complete assignment of 1H and 13C data of an unsymmetricalmonosubstitutebisporphyrin based on an extensive application of two‐dimensional 1H1H, 1H13C and 13C‐13C shift spectroscopy is described. The 1H1H shift correlation through dipolar interaction (2D NOESY) was essential to prove the connection of the alkyl fragments and to distinguish protons spatially close but belonging to different
Quinone-substitutedporphyrins were synthesized by the self-photosensitized reaction of prophyrins including phenol groups; intramolecular fluorescence quenching was inefficient in the conformationallyrestricted systems.
Luminescence of porphyrins and metalloporphyrins. Part 11.—Energy transfer in zinc–metal-free porphyrin dimers
作者:Ralph. L. Brookfield、Henriette Ellul、Anthony Harriman、George Porter
DOI:10.1039/f29868200219
日期:——
conformations. A partially closed form permits reasonably close approach of the two porphyrin rings so that Förster energytransfer is efficient. In a fully extended form the two porphyrins are held too far apart for energytransfer to compete effectively with non-radiative decay of the ZnP excited singlet state. Triplet energytransfer is not observed, owing to unfavourable orientations for exchange coupling