Desymmetrisation of Biphenyl-Based Carbohydrate Receptors: A Nonbonding Pillar in One Corner of the Cage
作者:Anthony Davis、Lee Challinor、Emmanuel Klein
DOI:10.1055/s-2008-1078020
日期:2008.8
We report a new addition to the family of biphenyl-based carbohydrate receptors, derived by replacing one out of four isophthalamide (diamide) linkages with the corresponding diester. The alteration results in lower binding constants, perhaps reflecting the entropic penalty for lowering receptor symmetry. However, the synthesis allows access to many related host molecules, with potential for restoring and raising affinities and tuning selectivities.
Bioconjugatable, PEGylated hydroporphyrins for photochemistry and photomedicine. Narrow-band, near-infrared-emitting bacteriochlorins
作者:Nuonuo Zhang、Jianbing Jiang、Mengran Liu、Masahiko Taniguchi、Amit Kumar Mandal、Rosemary B. Evans-Storms、J. Bruce Pitner、David F. Bocian、Dewey Holten、Jonathan S. Lindsey
DOI:10.1039/c6nj01155a
日期:——
building blocks, of five wavelength-tunable, bioconjugatable and water-soluble bacteriochlorins along with two non-bioconjugatable benchmarks. Each bacteriochlorin bears short polyethylene glycol (PEG) units as the water-solubilizing motif. The PEG groups are located at the 3,5-positions of aryl groups at the pyrrolic β-positions to suppress aggregation in aqueous media. A handle containing a single carboxylic
Synthetic bacteriochlorins bearing polar motifs (carboxylate, phosphonate, ammonium and a short PEG). Water-solubilization, bioconjugation, and photophysical properties
作者:Jianbing Jiang、Eunkyung Yang、Kanumuri Ramesh Reddy、Dariusz M. Niedzwiedzki、Christine Kirmaier、David F. Bocian、Dewey Holten、Jonathan S. Lindsey
DOI:10.1039/c5nj00759c
日期:——
A bacteriochlorin scaffold has been derivatized for life sciences applications.
一种细菌叶绿素骨架已被衍生出来用于生命科学应用。
Synthesis of Regioselectively Functionalized Pyrenes via Transition-Metal-Catalyzed Electrocyclization
作者:Anthony Davis、D. Walker、Joshua Howgego
DOI:10.1055/s-0030-1258238
日期:2010.11
rearrangement of 2,6-diethynyl-1,1′-biphenyl precursors to form polysubstituted pyrenes is described. This method is useful for the preparation of pyrenes with uncommon substitution patterns, and selective integration of functional groups at the 1-, 2-, 3-, 5-, 7- and 9-positions is demonstrated. pyrene - electrocyclic reactions - arenes - rearrangements - alkynes
New H-bonding patterns in biphenyl-based synthetic lectins; pyrrolediamine bridges enhance glucose-selectivity
作者:Gururaj Joshi、Anthony P. Davis
DOI:10.1039/c2ob25900a
日期:——
Synthetic lectins are molecules designed for the challenging task of biomimetic carbohydrate recognition in water. Previous work has explored a family of such systems based on bi/terphenyl units as hydrophobic surfaces and isophthalamide spacers to provide polar binding groups. Here we report a related receptor which employs a new spacer, 2,5-bis-(aminomethyl)-pyrrole, with an alternative (A-D-A) set of H-bonding valencies. The modified spacer leads to significant changes in binding selectivity, including a preference for glucose over all other tested substrates.