Diversity-oriented synthesis of analogues of the novel macrocyclic peptide FR-225497 through late stage functionalization

• Jyotiprasad Mukherjee,
• Suman Sil and
• Shital Kumar Chattopadhyay

Beilstein J. Org. Chem. 2015, 11, 2487–2492, doi:10.3762/bjoc.11.270

• [8], macrocyclic compounds are currently expanding the medicinal chemistry space [9][10]. Macrocyclic natural products [11] with significant levels of biological activity, and their analogues [12] are therefore receiving attention as targets for diversity-oriented synthesis. A class of cyclic tetra

Selected synthetic strategies to cyclophanes

• Sambasivarao Kotha,
• Mukesh E. Shirbhate and
• Gopalkrushna T. Waghule

Beilstein J. Org. Chem. 2015, 11, 1274–1331, doi:10.3762/bjoc.11.142

• 139 by using the Wurtz coupling as a key step (Scheme 20). Metathesis Alkyne metathesis reaction: In 2010, Murphy and Jarikote [139] have developed a useful protocol for assembling non-natural macrocyclic compounds containing carbohydrates. Compound 140 was prepared in several steps and was further

Release of β-galactosidase from poloxamine/α-cyclodextrin hydrogels

• César A. Estévez,
• José Ramón Isasi,
• Eneko Larrañeta and
• Itziar Vélaz

Beilstein J. Org. Chem. 2014, 10, 3127–3135, doi:10.3762/bjoc.10.330

• nanocarriers, they have the ability to hold/release drugs as a function of pH [9]. Cyclodextrins (CD) are macrocyclic compounds consisting of several glucose units linked by α-D-1,4-glycosidic bonds. Despite their high solubility in water, the internal cavity of cyclodextrins is non-polar and these compounds

Self-assembled monolayers of shape-persistent macrocycles on graphite: interior design and conformational polymorphism

• Joscha Vollmeyer,
• Friederike Eberhagen,
• Sigurd Höger and
• Stefan-S. Jester

Beilstein J. Org. Chem. 2014, 10, 2774–2782, doi:10.3762/bjoc.10.294

• the role of intraannular substituents on the 2D supramolecular surface patterns of macrocyclic compounds. Therefore, in addition to the concentration-driven conformational polymorphism that is yet attributed to a distinct extraannular substitution pattern as discussed above, we evaluate the role of

Macrocyclic bis(ureas) as ligands for anion complexation

• Claudia Kretschmer,
• Gertrud Dittmann and
• Johannes Beck

Beilstein J. Org. Chem. 2014, 10, 1834–1839, doi:10.3762/bjoc.10.193

• rather weak complexing agent, the large ring of 2 binds anions with association constants up to log K = 7.93 for chloride ions. Keywords: anion binding; macrocyclic compounds; NMR spectra; supramolecular chemistry; template; urea; Introduction Supramolecular chemistry – the “chemistry beyond the

Homochiral BINOL-based macrocycles with π-electron-rich, electron-withdrawing or extended spacing units as receptors for C₆₀

• Marco Caricato,
• Silvia Díez González,
• Idoia Arandia Ariño and
• Dario Pasini

Beilstein J. Org. Chem. 2014, 10, 1308–1316, doi:10.3762/bjoc.10.132

• remove by flash column chromatography. These byproducts were tentatively characterized as higher oligomers from their NMR pattern. The UV–vis absorption spectra in EtOH of a selection of macrocyclic compounds (3b, 3d, 4b and 4d with π-electron rich and π-electron deficient spacing units, Figure S1

Towards allosteric receptors – synthesis of β-cyclodextrin-functionalised 2,2’-bipyridines and their metal complexes

• Christopher Kremer,
• Gregor Schnakenburg and
• Arne Lützen

Beilstein J. Org. Chem. 2014, 10, 814–824, doi:10.3762/bjoc.10.77

• shallow binding sites that bind non-polar substrates via dispersive interactions. Hence, we wanted to take this approach one step further by using β-cyclodextrins as another class of macrocyclic compounds that are very well-known for their excellent recognition properties towards non-polar substrates [25